dvb-t2 rf specifications

DIGITALEUROPE Rue de la Science, 14>> B-1040 Brussels [Belgium] T. +32 2 609 53 10 >>F. +32 2 609 53 39 www.digitaleurope.org Transparency register member for the Commission: 64270747023-20

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Brussels, April 17, 2012

DIGITALEUROPE White paper:

Standardized DVB-T2 RF specifications

DIGITALEUROPE represents the digital technology industry in Europe. Our 100+ members

include some of the world’s largest IT, telecommunications and consumer electronics

companies, as well as national associations from every part of Europe.

This paper summarises recent work of the DIGITALEUROPE E-book RF group on defining a

minimum RF specification for DVB-T2 receivers. Some of the specification is derived from

work carried out in the UK DTG D-Book RF group but it also includes new test areas not

covered by other DVB-T2 RF specifications. The aim is to show the current best practice for

DVB-T2 receiver specification and testing. The specification has been verified on recent

DVB-T2 receivers. It is hoped this white paper will assist countries rolling out new T2

services. This specification will eventually be published as an update to the IEC 62216 E-

Book.

1- DVB-T2 MODES

DVB-T2 is a very flexible physical layer standard with many configuration options.

Unfortunately this very flexibility makes standardising on common operating modes difficult

due to the large number of possible mode combinations. To keep receiver compliance testing

time within reasonable limits, we have defined a subset of 9 modes for detailed performance

testing in difficult channels (Table 1). These modes cover many important areas of

functionality in the DVB-T2 specification. In addition it is expected that the receiver should be

able to demodulate an impairment free signal with all the following options from the DVB-T2

specification (EN 302 755). Receivers should be able to automatically detect the mode being

received when channel scanning.

Constellation (QPSK, 16-QAM, 64-QAM, 256QAM, rotated or normal)

Code rate (1/2, 3/5, 2/3, 3/4, 4/5 or 5/6),

Guard interval (1/4, 1/8, 1/16, 1/32, 1/128, 19/256, 19/128),

Transmission modes (1K, 2K, 4K, 8K, 16K, 32K),

Extended carrier modes (8K, 16K and 32K only)

Pilot patterns PP1-PP7

SISO and MISO

HEM (high efficiency) and normal modes

Normal and short FEC frames

7 and 8 MHz bandwidths

Single and multiple PLP modes

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Most of these options can be tested using large sets of functional tests, however any

changes to the DVB-T2 mode chosen for broadcasting must also be RF performance tested

with the legacy receiver population to ensure a smooth transition.

Table 1 – Selected DVB-T2 modes for performance testing

Mode: 1 2 3 4 5 61 7 8 9

Test

Coverage

AWGN & Static 0dB Echo Tests All Performance Tests

CCI Tests with modes 4 & 5

SFN SFN MFN SFN SFN

FFTSIZE

E=Ext. N=Normal 8KE 16KE 16KE 16KN 32KN 32KN 32KE 32KE 32KE

GI 1/16 19/128 19/256 1/32 1/32 1/8 1/128 1/16 1/32

LF 252 120 118 128 62 44 60 62 62

SISO/MISO SISO SISO SISO SISO SISO/

(MISO)2 SISO SISO SISO SISO

PAPR None TR None TR TR TR None TR TR

Frames per

superframe (NT2) 2 2 2 2 2 2 2 2 2

Channel

Bandwidth (MHz) 8 8 8 8 8 7 8 8 8

Signal

Bandwidth (MHz) 7.71 7.77 7.77 7.61 7.61 7.61 7.77 7.77 7.77

Pilot Pattern PP4 PP3 PP2 PP4 PP4 PP2 PP7 PP4 PP6

L1 Modulation QPSK 16QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM 64QAM

PLP #0

Type 1 1 1 1 1 1 1 1 1

Modulation QPSK 16QAM 64QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM

Rate 1/2 2/3 2/3 3/5 3/5 3/5 2/3 2/3 3/4

FEC Type 64800 64800 64800 64800 64800 64800 64800 64800 64800

Rotated QAM Yes Yes Yes Yes Yes Yes Yes Yes Yes

FEC blocks per

interleaving frame 51 96 138 202

196/

(195) 132 202 200 204

TI blocks per

frame (N_TI) 3 3 3 3 3 2 3 3 3

T2 frames per

Interleaving

Frame (P_I)

1 1 1 1 1 1 1 1 1

Frame Interval

(I_JUMP) 1 1 1 1 1 1 1 1 1

Type of time-

interleaving 0 0 0 0 0 0 0 0 0

Time Interleaving

Length 3 3 3 3 3 2 3 3 3

Data Rate Mbit/s 6.8601 16.7738 26.2131 33.1148 33.1667/(

32.9974) 25.2380 40.2146 36.5519 43.2113

Sensitivity dBm

(NF=7dB) -94.5 -86.6 -81.4 -78.7 -78.8 -78.8 -77.8 -77.2 -75.7

1 Note performance testing for the 7MHz mode 6 should use frequencies in VHF band III.

2 When mode 5 is used in MISO mode, the number of FEC blocks per interleaving frame needs to be set to 195

instead of the SISO value of 196.

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All single PLP modes use HEM (High Efficiency) input stage mode. There is no null packet

deletion, in-band signaling, L1 repetition or auxiliary streams. In order to comply with v1.2.1

of the DVB-T2 specification, ISSY should be used in all but the simplest of modes and so the

use of ISSY is explicitly indicated in this document where it is required. Network operators

should be aware that some signal configurations allowed by version 1.1.1 but prohibited by

version 1.2.1 might not be correctly received and decoded by receivers designed to the later

versions. It is therefore recommended that only parameter combinations permitted by version

1.2.1 and later be used. The L1 signaling may however be transmitted according to version

1.1.1.

To reduce receiver testing times, modes 1-4 in Table 1 are only tested for basic AWGN and

0dB echo C/N, and mode 4 is additionally used for co-channel ATV interference testing.

Modes 5-9 represent more commonly used SFN and MFN modes and are specified with all

the performance tests.

2- RF FREQUENCIES

This specification covers operation in VHF band III (7MHz channel bandwidth) and/or UHF

bands IV and V (8MHz channel bandwidth). Receivers should be able to operate with

transmission network frequency errors of up to +/-50 KHz, and channel bandwidths of 7

and/or 8MHz.

3- FAILURE POINT CRITERIA

Due to the sharp “cliff-edge” BER characteristic of LDPC decoding, BER measurements are

very time consuming to perform for DVB-T2 measurements, but picture failure

measurements are easier to make than for DVB-T. For this reason, two different picture

failure point criteria are defined for different tests:

1. Picture failure point1 (PFP1), defined as the minimum C/N or C/I value when two out

of three 10-second periods are free from picture artefacts.

2. Picture failure point2 (PFP2), defined as the minimum C/N or C/I value when two out

of three 20-second periods are free from picture artefacts. This reduces the

probability of incorrect results when testing DVB-T2 impulse noise immunity for

patterns 7-12 which have a long burst repetition period of 1000 ms.

4- MINIMUM RECEIVER SIGNAL INPUT LEVELS

The receiver should have a noise figure equal or better than 7 dB. The required minimum input signal levels (P min) for PFP1 are:

P min = -98.1 dBm + C/N [dB ] [for 8 MHz modes 1-3, 7-9 ] P min = -98.2 dBm + C/N [dB ] [for 8 MHz modes 4-5 ] P min = -98.7 dBm + C/N [dB ] [for 7 MHz mode 6]

where C/N is specified in Table 2

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5- MAXIMUM RECEIVER INPUT LEVEL

The receiver should be able to handle DVB-T2 signals up to a level of -25 dBm while

providing the specified performance. Maximum level for ATV/DTV interfering signals is

-25dBm.

6- C/N PERFORMANCE CALCULATION METHOD FOR AWGN AND 0dB ECHO

The DVB-T2 implementation lines in the A133 Blue Book (ref.1) show two sets of simulations

in tables 44 and 47. The simulations in table 44 represent the absolute best possible

theoretical performance assuming a theoretical receiver that can perform “Genie Aided” de-

mapping (an infinite number of de-mapping iterations). Table 44 also assumes an infinite

number of LDPC iterations. Clearly neither of these two assumptions is valid for a real

receiver due to finite limits on clock rate and silicon area. In contrast table 47 shows

simulated performance for a receiver using a non-iterative de-mapper and 50 LDPC

iterations (see also section 10.5.5 of ref.1). Table 47 is used to calculate the required AWGN

C/N in this specification. However because table 47 does not include 0dB echo simulations

but table 44 does, both these sets of simulation results are used derive the required C/N

performance in 0dB echo channels as shown below.

6- 1- AWGN C/N calculation

C/N = (C/N)table_47 + A + Pboost+ IL + Dpx, where

(C/N)table_47 = AWGN C/N for post LDPC BER=10-6 (table 47 of ref.1)

A = additional C/N required to reach post LDPC BER=10-7 – around 0.1dB

Pboost= correction for pilot boosting (from table 46 of ref.1)

IL = loss due to real channel estimation, imperfect LDPC decoding and other

imperfections not considered part of the back-stop noise. This is derived from ref.1

and includes a small additional allowance for receiver synchronization, fixed point

losses etc. For the E-book specification IL varies with pilot pattern as follows 2.5dB

(PP1-PP2), 2.0dB (PP3-PP4), 1.5dB (PP5-PP7).

Dpx= additional C/N term corresponding to a back-stop noise level at -33 dBc. This

term is derived by first calculating the sum of all terms except Dpx and then checking

how much C/N degradation is caused by the -33 dBc backstop noise level. The term

Dpx is identical to this degradation.

6- 2- 0dB echo C/N calculation

C/N0db = (C/N)table_47 +[END of 0dB echo channel] + A + Pboost+ IL+IL(CR) + Dpx

= (C/N)table_47 +[(C/N)0dB_table_44 – (C/N)AWGN_table_44] + A + Pboost+ IL+IL(CR) + Dpx, where

(C/N)table_47, A, Pboost, IL and Dpx as defined above for the AWGN C/N calculation

END = effective noise degradation (difference between 0dB echo and AWGN C/N)

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(C/N)0dB_table_44 = 0dB echo C/N for genie aided simulation (table 44 of ref.1)

(C/N)AWGN_table_44 = AWGN C/N for genie aided simulation (table 44 of ref.1)

IL(CR) = code rate dependent implementation loss due to additional losses in a 0dB

echo channel. These are 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 dB for 1/2 rate to 5/6 rate

respectively). These have been verified on several different receiver implementations.

7- AWGN C/N PERFORMANCE

The receiver should have the performance given in Table 2 when noise (N) is applied

together with the wanted carrier (C) in a signal bandwidth of 7.61, 7.71 & 7.77 MHz

depending upon mode. The values are calculated using a receiver backstop noise value Px

of -33 dBc. An ideal transmitter is assumed. The DVB-T2 signal is set to -50dBm at the tuner

input.

Table 2 - C/N (dB) for PFP1

Mode Details Gaussian PFP1

dB

1 8KE QPSK 1/2 1/16 PP4 3.6

2 16KE 16 QAM 2/3 19/128PP3 11.5

3 16KE 64 QAM 2/3 19/256 PP2 16.7

4 16KN 256 QAM 3/5 1/32 PP4 19.5

5 32KN 256 QAM 3/5 1/32 PP4 19.4

6 32KN 256 QAM 3/5 1/8 PP2 19.9

7 32KE 256 QAM 2/3 1/128 PP7 20.3

8 32KE 256 QAM 2/3 1/16 PP4 20.9

9 32KE 256 QAM 3/4 1/32 PP6 22.4

8- IMMUNITY TO ANALOGUE AND DIGITAL SIGNALS IN OTHER CHANNELS

8- 1- General notes for testing

All TV interferer signals are held at a constant at -25dBm at the tuner input whilst the wanted

signal is attenuated until PFP1 is obtained.

The RF signal should be broken after each change in wanted signal level to ensure the

receiver re-acquires. This is to ensure any weaknesses in the receiver acquisition processes

are included in the overall result.

A band pass filter on the interference source is normally needed on N±3 measurements and

beyond to achieve accurate results by reducing out of band interference from the

interference source.

>>6 of 27

8- 2- Immunity to analogue signals in other channels

The immunity for interference from analogue TV signals in adjacent and non-adjacent

channels is specified as the maximum ratio of the interference to wanted signal (I/C) for

reception (PFP1).

Table 3 shows recommended I/C levels for different types of analogue TV interference.

Table 3 – Immunity to analogue signals on other channels (I/C PFP1)

Mode N±1

PAL G PAL I1

N±1 PAL B3

N-1 SECAM L PAL D14

N+1 SECAM L

PAL D14

N±m (m1)

andN+95 SECAM L

PAL D14

N±m (m1) and image

channel5

PAL B/G/I15

Bandwidth: 8 MHz 7 MHz 8 MHz 8 MHz 8 MHz 7/8 MHz

5 – 32KN 256Q 3/5 1/32 PP4 8MHz

36 28 30 43 44

6 – 32KN 256Q 3/5 1/8 PP2 7MHz

32 43

7 – 32KE 256Q 2/3 1/128 PP7 8MHz

35 27 29 42 43

8 – 32KE 256Q 2/3 1/16 PP4 8MHz

34 26 28 41 42

9 – 32KE 256Q 3/4 1/32 PP6 8MHz

33 25 27 40 41

8- 3- Immunity to DTT signals in other channels

The immunity for interference from digital TV signals in adjacent and non-adjacent channels

is specified as the maximum ratio of the interference to wanted signal (I/C) for reception

(PFP1). Table 4 shows recommended I/C levels for DVB-T/T2 interference.

Note immunity to digital signals in other channels should use a DVB-T or non-extended DVB-

T2 interferer for the 7MHz mode and an extended DVB-T2 mode interferer for 8MHz modes.

Table 4 – Immunity to digital signals on other channels (I/C PFP1)

Mode N±1 N±2 N±3 N±m (m1, m>3)

except N+95

N+95

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 27 37 42 45 30

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 26 36 41 44 29

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 26 36 41 44 29

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 25 35 40 43 28

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 24 34 39 42 27

3 Note that if PAL B N-1 is using NICAM sound, the digital channel on N cannot be used without an offset,

because of the overlapping spectrums. The offset to be used in this test is recommended to be +167KHz on

the wanted signal.

4 Note that the figures for PAL D1 are provisional. Performance for PAL D/K is similar to D1.

5 Note that N+9 is a popular choice for the image channel in tuner designs using 36MHz IF for 8MHz channel

systems. For 7MHz systems, the image channel is N+10 (70MHz).

>>7 of 27

8- 4- Immunity to LTE signals in other channels

Figure 1 shows the harmonized 800MHz spectrum organization for LTE deployment. There

is only a small 1 MHz guard band between the top TV channel 60 and the lowest LTE base

station in block A. Also the LTE handset (UE) block C falls on the N+9 image channel of TV

tuner designs employing a 36MHz IF frequency. It is important to test immunity to these

types of adjacent channel interference. Recent tests on existing DTT receivers have shown

the most challenging form of interference for some receivers is when the LTE interferer is

bursty – typical of a lightly loaded or idling LTE network. Signals captured from a real LTE

base station (BS) and handset (UE) are used as interference sources to test that receivers

provide a reasonable level of immunity against this type of bursty interference. The I/C

specification set in Table 5 is designed to reject badly behaving receivers. These interference

signals are in the following files available on the DIGITALEUROPE website:

Base Station: LTE_BS-idle_V2.wv (a lightly loaded 10MHz LTE BS signal consisting

mainly of synchronisation and broadcast signals)

Handset : LTE_UE_1Mbs_V2.wv (a lightly loaded 10MHz LTE UE signal with 1Mbit/s

data traffic)

Figure 1– Harmonised 800MHz spectrum for LTE Deployment

766-774 MHz

DTT CH58

774-782 MHz

DTT CH59

782-790 MHz

DTT CH60

1 MHzGuard Band

791-796 MHz

796-801 MHz

801-806 MHz

806-811 MHz

811-816 MHz

816-821 MHz

821-832 MHz

832-837 MHz

837-842 MHz

842-847MHz

847-852 MHz

852-857 MHz

857-862 MHz

Downlink (BS)6 blocks of 5MHz or 3 blocks of 10 MHz

Uplink (UE)6 blocks of 5MHz or 3 blocks of 10 MHz

11 MHzDuplex Gap

10 MHz BS Block A

10 MHz BS Block B

10 MHz BS Block C

10 MHz UE Block A

10 MHz UE Block B

10 MHz UE Block C

Table 5 – Immunity to LTE signals on other channels (I/C PFP1)

Mode Note : Wanted signal centre at

786 MHz

BS-A (796 MHz)

BS-B (806 MHz)

UE-A (837 MHz)

UE-C (757 MHz)

Interferer power at tuner input(measured during

active part of LTE signal)6

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 30 dB 30 dB 30 dB 30 dB -15 dBm

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 30 dB 30 dB 30 dB 30 dB -15 dBm



6 Note the power of the LTE BS and UE signal is defined as the RMS power during the active part of

the signal. To assist setting the power level of the LTE BS_idle downlink signal, the RMS power

measured by a power meter shall be set approximately 8.3 dB lower (e.g. -23.3dBm). Similarly for

the LTE UE_1Mbs signal, the RMS power measured by a power meter shall be set approximately

9.7 dB lower (e.g. -24.7 dBm).

>>8 of 27

8- 5- Immunity to pattern L3

This is a tuner linearity test with one digital DVB-T signal on the N+4 channel and another

digital DVB-T signal on the N+2 channel in addition to the wanted DVB-T2 signal on channel

N. This type of test is becoming increasingly important in today’s crowded spectrum.

The DVB-T2 receiver should provide the PFP1 when the unwanted signals are at the highest

allowed level (-25dBm at the tuner input) and the wanted signal is I/C dB lower, where I/C is

given in Table 6.

Table 6 – Immunity to Pattern L3 (I/C PFP1)

Mode I/C [N+2 and N+4]

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 28

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 27

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 27

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 26

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 25

9- IMMUNITY TO CO-CHANNEL INTERFERENCE

9- 1- Immunity to co-channel interference from analogue TV signals

The immunity for interference from co-channel analogue TV-signals is specified as the

maximum ratio of the interference to wanted signal (I/C) for reception (PFP1). The wanted

DVB-T2 signal should be set to -50 dBm at the tuner input.

Table 7 – Immunity to co-channel interference7 from analogue signals (I/C PFP1)

Mode PAL-I1 PAL B PAL G/D1 SECAM-L

4 – 16KN 256Q 3/5 1/32 PP4 8MHz -5 -5 -6

5 – 32KN 256Q 3/5 1/32 PP4 8MHz -5 -5 -6

6 – 32KN 256Q 3/5 1/8 PP2 7MHz -6

7 – 32KE 256Q 2/3 1/128 PP7 8MHz -6 -6 -7

8 – 32KE 256Q 2/3 1/16 PP4 8MHz -7 -7 -8

9 – 32KE 256Q 3/4 1/32 PP6 8MHz -8 -8 -9

9- 2- Immunity to co-channel DAB interference

The immunity for co-channel interference from a single 1.7MHz wide DAB signal in the

centre of the wanted channel is specified as the maximum ratio of the interference to wanted

signal (I/C) for reception (PFP1). Only two modes are specified to reduce testing. The

wanted DVB-T2 signal should be set to -50 dBm at the tuner input.

7 Note that the CCI interference generator should have its frequency reference locked to the DVB -

T/T2 signal generator in order to obtain repeatable measurement results.

>>9 of 27

Table 8 – Immunity to co-channel interference from a single 1.7MHz DAB signal (I/C PFP1)

Mode I/C dB

6 – 32KN 256Q 3/5 1/8 PP2 7MHz -4

8 – 32KE 256Q 2/3 1/16 PP4 8MHz -5

10- MULTIPATH PERFORMANCE

10- 1- SFN multipath performance

10- 1- 1- Static 0dB echo

The required C/N for picture failure point PFP1 should be obtained when the channel

contains two paths with relative delays as shown in Table 9. All paths have zero phase at the

channel centre.

The DVB-T2 signal should be set to -50 dBm at the tuner input.

Table 9 – C/N Requirements for 0dB Echo (PFP1)

Mode Echo Delay

1.95 µsec 95% Guard Interval

C/N dB C/N dB

1 - 8KE QPSK 1/2 1/16 PP48MHz 5.3 5.3

2 - 16KE 16 QAM 2/3 19/128 PP38MHz 14.5 14.5

3 - 16KE 64 QAM 2/3 19/256 PP28MHz 20.2 20.2

4 - 16KN 256 QAM 3/5 1/32 PP48MHz 23.2 23.2

5 – 32KN 256Q 3/5 1/32 PP48MHz 23.2 23.2

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 23.6 23.6

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 24.5 24.5

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 25.2 25.2

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 27.4 27.4

10- 1- 2- Variable power echo

The required C/N for picture failure point (PFP1) shown in Table 10 should be obtained when

the channel contains two paths with relative delays shown in Table 11, where the relative

power level of the two paths are dynamically changing including 0dB echo level crossing.

The C/N value is defined at the 0dB level crossing. On a typical channel simulator, a

frequency separation of 0.1Hz would be selected as 0.1Hz “pure doppler”. All paths have

zero phase at the channel centre.

The DVB-T2 signal should be set to -50 dBm at the tuner input.

>>10 of 27

Table 10 – C/N Requirements for Varying Echo Power Levels (PFP2)

Mode C/N dB

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 26.2

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 26.6

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 27.5

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 28.2

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 30.4

Table 11 – Definition of Varying Echo Power Channel

Path No Relative Power (dB)

Delay Frequency Separation

1 0 0 None

2 0 95% GI None

3 -1 95% GI Pure 0.1Hz

10- 1- 3- Performance with echoes outside the guard interval

This test checks performance in the presence of either a single pre-echo or a single post-

echo outside the guard interval, with the main path at zero delay. This is important in SFN

networks where it is possible to receive low level echoes outside the guard interval in certain

situations.

For the modes shown in Table 12, the attenuation of the single echo at the specified delay

points is measured to achieve PFP1. The receiver should achieve PFP1 with the echo level

greater than or equal to that shown in Table 12. All echoes have zero phase at channel

centre. No noise is added. The DVB-T2 signal should be set to -50 dBm at the tuner input.

For 7MHz channels, multiply the delay times in the tables by 8/7.

Table 12 – Long echo test profile (Echo Level for PFP1)

Mode Delay and Echo Level

5 – 32KN 256Q 3/5 1/32 PP4 8MHz Delay µs ±120 ±150 ±200 ±230 ±266

Echo level dB -2 -5 -8.5 -10 -11

6 – 32KN 256Q 3/5 1/8 PP2 7MHz Delay µs ±540 ±560 ±580 ±600 ±608

Echo level dB -4 -6 -7.5 -8.5 -9

7 – 32KE 256Q 2/3 1/128 PP7 8MHz Delay µs ±30 ±60 ±90 ±120 ±133

Echo level dB -2 -5.5 -8 -10 -10.5


Echo level dB -2 -3.5 -5.5 -6.5 -7


Echo level dB -2 -3 -4.5 -5.5 -6

>>11 of 27

10- 2- MFN multipath performance

10- 2- 1- Performance with short echoes

The receiver should provide PFP1 for the C/N values shown in Table 14 when the channel

profile in Table 13 is applied. All paths have zero phase at the channel centre. The DVB-T2

signal should be set to -50 dBm at the tuner input.

Note that due to the short echo delays in Table 13, some test equipment does not report

back the correct C/N.

Table 13 – Short echo test profile

Tap Delay (µs) Relative Attenuation (dB)

1 0 2,8

2 0,05 0

3 0,4 3,8

4 1,45 0,1

5 2,3 2,6

6 2,8 1,3

Table 14 – C/N Requirements for Short Echo Profile (PFP1)

Mode C/N dB

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 21.5

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 22.0

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 22.7

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 23.4

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 25.7

11- PERFORMANCE IN TIME VARYING CHANNELS

Receivers should handle expected time variations of paths to fixed roof-top reception. Such

variation is caused by the swaying of masts, antennas and branches of trees etc. Normally

the required C/N increases with frequency separation as shown in Figure 2.

The increase in required C/N for PFP1 reception should be less than or equal to the Δvalue

shown in Table 15 for a 20μs 0dB echo with 0º phase at the channel centre using the

frequency separation shown, when compared to a 20μs 0dB echo with frequency separation

equal to 1 Hz (Doppler shift of +/- 0.5Hz after AFC). The DVB-T2 signal should be set to -50

dBm at the tuner input.

Note: On a typical channel simulator, a frequency separation of 10Hz corresponds to a “Pure

Doppler” setting of 10Hz (+/-5Hz after receiver AFC), which at 666MHz with a frequency ratio

of 1.0, corresponds to a speed of 4.5m/sec or 16.2km/hr.

>>12 of 27

Figure 2 - Tolerance to a single echo with Doppler

Table 15 – C/N Variation Requirements for Time Varying Channel (PFP1)

Mode Frequency Separation

f1 Hz

Δ C/N dB (with

respect to C/N at 1Hz frequency

separation)

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 10 3 dB

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 10 3 dB

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 10 3 dB

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 10 3 dB

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 10 5 dB

12- TOLERANCE TO IMPULSE INTERFERENCE

12- 1- General

Impulse interference is different from other forms of interference, in that it is generated in

short bursts. Sources include car ignition systems and domestic appliances such as switches

and electric motors. In portable and mobile environment, the impulse interference will reach

the receiver directly through the antenna. The damage is potentially serious because a single

impulse burst can destroy several symbols of data. Research work on the impulse

interference has been mainly carried out in the UK digital television group (DTG) (ref 2).

Some of the specifications presented here are derived from that work.

12- 2- Test patterns

Various test signals comprising gated bursts of Gaussian noise are defined based on the

model shown in Figure 3. These have been chosen to match different categories of

measured impulse noise in the domestic environment such as dishwashers, lights, and

central heating thermostats. The DVB-T2 time interleaver improves impulse noise immunity

significantly over DVB-T by breaking up the noise impulses over time. This requires longer

noise burst durations, burst repetition periods and picture observation times (PFP2) to be

used compared with DVB-T as shown in Table 16.

C/Nmin + dB

C/Nmin

C/Nmin (dB)

Frequency

Separation (Hz) 1 f1

C/N (dB)

>>13 of 27

Figure 3 – Definition of the impulse interference test pattern

Table 16 – DVB-T2 Impulse interference test patterns

Test No

Pulses per burst

Minimum/maximum pulse spacing

μs

Burst duration

μs

Minimum/maximum burst duration

μs

Burst repetition

period ms

7 4 15 35 1 45.25 105.25 1000

8 40 0.5 1 10 19.75 39.25 1000

9 80 0.5 3 20 39.75 237.25 1000

10 400 1 30 100 399.25 11,970.25 1000

11 4,000 0.5 3 1,000 1,999.75 11,997.25 1000

12 40,000 0.5 1 10,000 19,999.75 39,999.25 1000

Table 17 - Minimum I/C values for DVB-T2 impulsive noise tests

Mode Expected I/C (dB) for picture failure (PFP2)

Test Pattern Number

7 8 9 10 11 12

5 – 32KN 256Q 3/5 1/32 PP4 8MHz 28.7 18.7 15.7 5.7 -4.8 -16.8

6 – 32KN 256Q 3/5 1/8 PP2 7MHz 29.1 19.1 16.1 6.1 -4.4 -16.4

7 – 32KE 256Q 2/3 1/128 PP7 8MHz 27.7 17.7 14.7 4.7 -5.8 -17.8

8 – 32KE 256Q 2/3 1/16 PP4 8MHz 27.2 17.2 14.2 4.2 -6.3 -18.3

9 – 32KE 256Q 3/4 1/32 PP6 8MHz 25.7 15.7 12.7 2.7 -7.8 -19.8

12- 3- Test requirement and procedure

The minimum I/C for picture failure point PFP2 should be obtained when the channel

contains gated Gaussian noise as defined in Table 16, for the modes shown in Table 17.

Burst 1 Burst 2

Burst repetition period

1000ms DVB-T2

Burst Du ration

Pulse Duration 250ns (fixed)

The number of pulses per burst is defined, but the spacing between pulses is

allowed to vary randomly between specified maximum and minimum values.

>>14 of 27

The wanted signal power should be set to -60dBm at the tuner input, and the impulse noise

increased until the picture failure point condition PFP2 is reached. The wanted signal power

and the un-gated noise power are then measured (in the bandwidth of the wanted signal) to

calculate the I/C.

13- OPERATION WITH FEFS

DVB-T2 receivers should be able to operate in a system using FEFs continuously as defined

in Table 18 which takes some of its parameters from the DTG D-book (ref.2). All single PLP

modes with FEFs use HEM input stage mode, and ISSY. There is no Null Packet Deletion or

in band signaling. L1 repetition and auxiliary streams are not used. Demodulating the actual

FEF content is not required.

Table 18 – Parameters for standard FEF tests

Identifier DTG201 DTG202 DTG203 DTG204 DTG205 DTG206 DTG207

Stream Name FEF_1 FEF_2 FEF_3 FEF_4 FEF_5 FEF_6 FEF_7

FEF 40ms

FEF 20ms

FEF 10ms

FEF 5ms FEF 60ms FEF has power equal to T2 frame

FEF 100ms FEF has power equal to T2 frame

Overall

FFTSIZE 4K 32K 32K 32K 32K 32K 32K

GI 1/4 1/128 1/128 1/128 1/128 1/128 1/128

Data Symbols 15 59 59 29 15 59 19

SISO/MISO SISO SISO SISO SISO SISO SISO SISO

PAPR None None None None None None None

Frames per superframe 4 4 2 2 2 4 4

Bandwidth 8MHz 8MHz 8MHz 8MHz 8MHz 8MHz 8MHz

Extended Bandwidth Mode No Yes Yes Yes Yes Yes Yes

Pilot Pattern PP1 PP7 PP7 PP7 PP7 PP7 PP7

L1 Modulation QPSK BPSK BPSK BPSK BPSK BPSK BPSK

FEF Type 0 0 0 0 0 0 0

FEF Length (samples) 78848 365713 182856 91428 45714 550000 914286

FEF Interval 2 4 2 2 2 1 1

FEF P1: S1 Value 2 2 2 2 2 2 2

FEF P1: S2 Value 1 1 1 1 1 1 1

L1 Repetition 0 0 0 0 0 0 0

PLP #0

Type 1 1 1 1 1 1 1

Modulation 16QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM

Rate 1/2 2/3 2/3 2/3 2/3 2/3 2/3

>>15 of 27

FEC Type 64800 64800 64800 64800 64800 64800 64800

Rotated QAM Yes Yes Yes Yes Yes Yes Yes

FEC blocks per interleaving frame

3 201 201 99 53 201 66

TI blocks per frame (N_TI) 1 3 3 3 1 3 1

T2 frames per Interleaving Frame (P_I)

1 1 1 1 1 1 1

Frame Interval (I_JUMP) 1 1 1 1 1 1 1

Type of time-interleaving 0 0 0 0 0 0 0

Time Interleaving Length 1 3 3 3 1 3 1

Design Delay 114053 667232 667232 335371 540324 667471 673827

Additionally FEFs may be enabled and disabled over time and the FEF content may be

changed dynamically. One application of this is to allow interference into the wanted channel

to be measured on a live system. A test for this scenario is described below.

The receiver should be able to continue normal reception throughout these changes of DVB-

T2 signal configuration without requiring a channel rescan, however it is acceptable for the

receiver to re-acquire the channel during the transition phases when FEFs are being enabled

or disabled, causing a brief interruption in reception.

To test receiver conformance, the receiver should be able to acquire and display error free

video without requiring a channel re-scan each time the input is switched from a DVB-T2

signal configured as mode 8, to a DVB-T2 signal configured as shown in Table 19, followed

by switching back to the original mode 8 input.

It is acceptable to have signal breaks during switching if necessary for re-configuring the

DVB-T2 modulator and demodulator, but there should be no picture failures after each

transition phase once the receiver has re-acquired.

Table 19 – Parameters for FEF off/on/off test

Parameter Value

DVB-T2 mode used for testing Mode 8 with NT2 (number of frames per superframe) changed from 2 to 6 as shown below

DVB-T2 signal level at tuner input -50dBm

ISSY enabled Yes

FEF enabled Yes

Frames per superframe (NT2) 6

FEF P1 S1 value 2

FEF P1 S2 value 1

T2 P1 S2 value 1

FEF length 520000 samples or 56.875 ms

FEF interval 6 T2 Frames

FEF content Empty (zero power)

Design Delay 719248 samples

>>16 of 27

14- MISO OPERATION

MISO transmissions of group 1 and group 2 can either be transmitted from a single

transmitter location (co-located MISO), or from two or more transmitter locations (distributed

MISO). In the latter case there is a possibility that only one MISO group can be received due

to obstructions in the channel. Tests for basic MISO functionality under these different

conditions are shown in Table 21.

Table 20 – DVB-T2 MISO Test Setup

Test Parameters Value

DVB-T2 mode Mode 5 with 195 FEC blocks per interleaving frame

DVB-T2 signal level at tuner input -50dBm

Background AWGN applied -30dBc

Table 21 – DVB-T2 MISO Test Definitions

Test Number Test Details Expected Result

1 Gaussian channel - MISO group 1 only PFP1

2 Gaussian channel - MISO group 2 only PFP1

3 MISO group 1 (with 10 µsec delay) + MISO group 2 (no delay) PFP1

4 MISO group 1 (with 85 µsec delay) + MISO group 2 (no delay) PFP1

5 MISO group 1 (with 10 µsec delay + MISO group 1 (no delay) PFP1

6 MISO group 1 (with 85 µsec delay + MISO group 1 (no delay) PFP1

15- MPLP / RECEIVER BUFFER MODEL OPERATION

Functional tests to verify correct operation of the DVB-T2 receiver buffer model with multiple

PLPs are shown in Table 22. The receiver should be able to detect the services during a

channel scan, select the PLP number shown in Table 22 and display the video correctly. All

the streams use 8MHz RF bandwidth. A description of how to generate the multiple PLP test

signals is given in the Annex. Any transport stream with a bit rate of 3.3Mbit/s or lower can

be used.

Table 22 – DVB-T2 MPLP / RBM Operation

Test Selected PLP for reception Test Signal Name

VV702 0 VV702_plp0

1 VV702_plp1

VV705 0 VV705_plp0

VV708 0 VV708_plp0

2 VV708_plp2

VV710 0 VV710_plp0

3 VV710_plp3

>>17 of 27

REFERENCES AND ACKNOWLEDGEMENTS 1. DVB-T2 A133 Blue Book – Implementation guidelines for a second generation digital

terrestrial television broadcasting system (DVB-T2) 2. DTG D-Book 7 Part A, Digital Television Group, UK

3. E-Book RF specification draft v2.16, DIGITALEUROPE

>>18 of 27

ANNEX - GUIDELINES ON THE GENERATION OF REAL VIDEO MULTIPLE PLP TEST SIGNALS

Summary

The test signals are a subset of tests developed in the DVB-T2 V&V group to check corner

cases of receiver buffer model operation and proper recognition of multiple PLP services in

the received DVB-T2 RF signal by monitoring the displayed picture and sound of the TV

product. It is expected that test equipment manufacturers will provide suitable test signals

following the guidelines in this annex to enable receiver testing. A low bit rate transport

stream <=3.3Mbit/s is required with sufficient movement to prevent error concealment

algorithms in the video decoder from concealing receiver problems.

The demodulator in the receiver combines the selected PLP and common PLP data to create

a valid transport stream. By including the real video data in the common PLP it is possible to

detect problems with the re-combining process by monitoring the received picture and audio.

Figure 4 shows the operations to create the signal in the modulator. Figure 5 shows the

operations to re-combine the selected data PLP with the common PLP in the receiver. Note

that a separate test signal is required to test each PLP because only one PLP is encoded

with the real video sequence, the rest contain PRBS sequences.

Figure 4 -Creation of real video MPLP test signals in the modulator

TS0TS0TS0 TS0 TS0 TS0 Null Null Null TS0 TS0 TS0 TS0

Null Null Null Null Null Null Null Null Null NullTS1 TS1 TS1

TS0

TS1

PLP0

PLP1

PLPC

TS0TS0 TS0 TS0

TS0

Null Null Null TS0

TS0

TS0 TS0

Null TS0

Null


Null Null

Null

Null Null NullNull Null

Null

Null Null

TS0 TS0 TS0 TS0Null Null Null Null


TS0 TS0 TS0Null Null Null Null

TS0

Null

Null

TS0

Null TS0 TS0Null Null Null Null


Null

Null

Null

TS0 NullPRBS packet Null packet TS0 Real Video packet

(may contain SI info)

Common PLP packets should not contain PAT,

SDT, NIT, EIT, PMT but only audio/video packets

TS0 Real Video packet

(no SI information)

>>19 of 27

TS0Null

PacketTS0TS0

Null

Packet

Comm

Cat 2

PLP 1

TS0Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

PacketTS0 TS0

Null

PacketTS0

Null

PacketTS0 TS0

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

PacketTS1 TS1

Comm

Cat 2

PLP 1

Null

Packet

Null

Packet

Null

PacketTS1 TS1

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Null

Packet

Comm

Cat 1

Null

Packet

Null

Packet

Null

Packet

Comm

Cat 2

PLP 1

Null

Packet

Comm

Cat 2

PLP 2

Null

Packet

Null

Packet

Comm

Cat 3

PLP 1

Null

Packet

Null

Packet

Null

Packet

Comm

Cat 3

PLP 2

Null

Packet

Comm

Cat 3

PLP 2

Null

Packet

Null

Packet

PLP0

PLP1

Common

PLP

TS0

Null

Packet

Null

Packet

TS1

Null

Packet

Null

Packet

Null

Packet

TS0

Null

Packet

Null

Packet

TS0

Null

Packet

TS1

Null

Packet

Null

Packet

TS1

Null

Packet

TS0Comm

Cat 1TS0TS0

Null

Packet

Comm

Cat 2

PLP 1

TS0

Comm

Cat 2

PLP 2

Null

Packet

Null

Packet

Comm

Cat 3

PLP 1

Null

PacketTS0 TS0

Comm

Cat 3

PLP 2

TS0

Comm

Cat 3

PLP 2

TS0 TS0

Null

Packet

Comm

Cat 1

Null

Packet

Null

Packet

Comm

Cat 2

PLP 1

TS1 TS1

Comm

Cat 2

PLP 2

Null

Packet

Null

Packet

Comm

Cat 3

PLP 1

TS1 TS1

Comm

Cat 3

PLP 2

Null

Packet

Null

Packet

Comm

Cat 3

PLP 2

Null

Packet

Null

Packet

TS0

TS1

TS0

Null

Packet

Null

Packet

TS1Null

Packet

TS0

Null

Packet

TS0

TS1

Null

Packet

TS1

Null

Packet

Time

M packets (M=4)

First chapter: 2 repetitions of repeating unit with NumPackets[0]=4, NumPackets[1]=3

New repeating unit with

NumPackets[0]=2,

NumPackets[1]=1

TS0 Normal packet

for TS0/PLP0TS1 Normal packet

for TS1/PLP1

Comm

Cat x

PLP i

Common packet,

category x

describing PLP i

Normal

slot for PLP 1

Common

slot

4

3 3

4 2 2

1

Figure 5– Recombination of selected data PLP (PLP0 in this example) and the common PLP in the receiver to re-create TS0

Test signal composition

Figure 6 shows how the packets for TS0 are allocated to the selected PLP (PLP0) in units (in

red boxes) of different numbers of packets (run lengths), and to common PLP slots that

occur at regular spacing (M=4 in this example). In addition TS1 (PRBS) is assigned to PLP1.

A chapter is formed by repeating units a specific number of times. A new chapter containing

new run lengths for TS0 and TS1 and a new number of unit repetitions is shown starting to

the right of the red line.

Figure 6 - Test signal composition

TS0TS0TS0 TS0 TS0 TS0 Null Null Null TS0 TS0 TS0 TS0

Null Null Null Null Null Null NullTS1 TS1 TS1

TS0

TS1

PLP0

PLP1

PLPC

TS0TS0 TS0 TS0

TS0

Null Null Null TS0

TS0

TS0 TS0

Null TS0

Null


Null Null

Null

Null Null NullNull Null

Null

Null Null


TS1 TS1 TS1 TS1Null Null

TS0 TS0Null Null Null Null

TS0

Null

Null

TS0

Null TS0 TS0Null Null Null Null


Null

Null

Null

TS0 TS0 TS0

Null

TS0 TS0

>>20 of 27

Table 23 - Test signal generation parameters

Number 702 705 708 710

Mnemonic TDICC3 SPLPTDICC2 DJBCC2 TDICC1

VV Reference VV702-TDICC3 VV705-SPLPTDICC2 VV708-DJBCC2 VV710-TDICC1

Time Deinterleaver

Buffer Corner Case

3 below limit (OK)

Single PLP corner

case (OK - below

limit) FEF

De-jitter Buffer

corner case (OK -

below limit)

Time Deinterleaver

Buffer Corner Case

(OK) Based on

VV400 + FEF, with

critical i/p

Input stream definition

Input stream generation model

Dynamic multiple

PLP

SPLP (Fixed bit-

rate)

Dynamic multiple

PLP

Dynamic multiple

PLP

Input TS rate Mbit/s 36.234886 38.030308 5955840/178801

Input one big TS file

M Common slot interval

22 11 11

L Number of chapters

4 8 10

N_EIT Number of successive EIT

packets

50 100 100

NumReps Repeats of repeating unit

15, 1, 15, 1 15,1,15,1,15,1,15,1 15,1,15,1,15,1,15,1

,15,1

RunLength(TS0) Run length for each TS..

92, 20, 44, 27 102,95,102,95,102,

95,102,95

102,95,102,95,0,0,

66,3,102,95

RunLength(TS1) in each repeating unit..

44, 27, 92, 20 15,29,15,29,15,29,

15,29

13,11,13,11,19,13,

8,17,13,11

RunLength(TS2) ..in a chapter 8, 2, 8, 2 14,15,14,15,14,15,

14,15

13,15,13,15,19,13,

8,15,13,15

RunLength(TS3) 8, 2, 8, 2 14,16,14,16,14,16,

14,16

13,14,13,14,18,11,

7,3,13,14

Overall

Length V&V minimum of one T2 frame

4 frames 7 frames 3 frames 5 frames

PLP Multiple Single Multiple Multiple

FFTSIZE 32K 32K 32K 32K

GI 1/128 1/16 1/128 1/128

Data Symbols Including frame closing symbol (if

present)

27 61 27 27

SISO/MISO SISO SISO SISO SISO

PAPR P2-TR & L1-ACE TR & L1-ACE P2-TR & L1-ACE P2-TR & L1-ACE

>>21 of 27

only only only

Frames per superframe

2 6 2 4

Bandwidth 8MHz 8MHz 8MHz 8MHz

Elementary period T 0.109375 0.109375 0.109375 0.109375

Extended Carrier Mode

Yes Yes Yes Yes

Pilot Pattern PP7 PP4 PP7 PP7

L1 Modulation 16QAM 64QAM 16QAM 16QAM

Sub Slices per Frame Not required in Single PLP

108 1 108 108

FEF None Yes None Yes

FEF Type 0000 0000

FEF Length in samples 595420 380000

FEF Interval 6 4

FEF P1: S1 Value 010 010

FEF P1: S2 Value 0001 0001

FEF contents PRBS PRBS

L1 Repetition Repetition of the dynamic signalling

0 0 0 0

Number of PLPs 5 1 5 5

Number of RFs 1 1 1 1

Number of AUXs 0 0 0 0

AUX_CONFIG_RFU

AUX_STREAM_TYPE

AUX_PRIVATE_CONF

AUX_PRIVATE_DYN

Spec version 1.2.1 1.2.1 1.2.1 1.2.1

Vclip infinity 3.55 infinity infinity

L1 Extension Present? No No No No

L1 Extension Block Type

L1 Extension Data Length

L1 Bias balancing cells present?

No No No No

Number of Active L1 Bias balancing cells

(per P2)

L1_ACE_MAX 0 0.1 0 0

Pseudo Fixed Frame Structure

Use Max Cells Per T2 Frame for

scheduling

Yes No No Yes

>>22 of 27

PLP 1

PLP_ID 0 0 0 0

PLP_GROUP_ID 0 1 0 0

Type 1 1 2 2

Modulation 256QAM 256QAM 256QAM 256QAM

Rate 2/3 3/5 2/3 2/3

FEC Type 64800 64800 64800 64800

Rotated QAM Yes Yes Yes Yes


Comma-separated list gives the

number of blocks in each

Interleaving Frame

dynamic 200 dynamic dynamic

Max FEC blocks per interleaving frame

Value for configurable

signalling. May exceed the max

value used

57 200 57 57

TI blocks per frame (N_TI)

derived parameter 1 3 1 1

T2 frames per Interleaving Frame

(P_I)

derived parameter 1 1 1 1

Frame Interval (I_JUMP)

1 1 1 1

First frame index 0 0 0 0

Input stage

Mode HEM HEM HEM HEM

ISSY Yes Yes Yes Yes

BUFS 1613824 2097152 1671168 1662976

Design delay (samples) 939080 719388 935798 939195

Null packet deletion Not required in Single PLP (I.G.

7.7.3.1)

Yes No Yes Yes

In Band Signalling Type A No Type A Type A

Number of other PLPs in-band signalling

0 0 0

Number of NULL packets inserted each

time (p)

Frequency of NULL packets insertion in

packets (q)

PLP 2

PLP_ID 1 1 1

PLP_GROUP_ID 0 0 0

Type 1 2 2

>>23 of 27

Modulation 256QAM 256QAM 256QAM

Rate 2/3 2/3 2/3

FEC Type 64800 64800 64800

Rotated QAM Yes Yes Yes


dynamic dynamic dynamic


57 57 57


1 1 1


(P_I)

1 1 1


1 1 1

First frame index 0 0 0

Input stage

Mode HEM HEM HEM

ISSY Yes Yes Yes

BUFS 1613824 1671168 1662976

Design delay (samples) 939080 935798 939195

Null packet deletion Yes Yes Yes

In Band Signalling Type A Type A Type A


0 0 0


time (p)


packets (q)

PLP 3

PLP_ID 2 2 2

PLP_GROUP_ID 0 0 0

Type 1 2 2


Rate 2/3 2/3 2/3

FEC Type 64800 64800 64800





22 57 57


1 1 1

>>24 of 27


(P_I)

1 1 1


1 1 1


Input stage

Mode HEM HEM HEM

ISSY Yes Yes Yes

BUFS 1613824 1671168 1662976





0 0 0


time (p)


packets (q)

PLP 4

PLP_ID 3 3 3

PLP_GROUP_ID 0 0 0

Type 1 2 2


Rate 2/3 2/3 2/3

FEC Type 64800 64800 64800





22 57 57


1 1 1


(P_I)

1 1 1


1 1 1


Input stage

Mode HEM HEM HEM

ISSY Yes Yes Yes

BUFS 1613824 1671168 1662976

>>25 of 27





0 0 0


time (p)


packets (q)

PLP 5

PLP_ID 4 4 4

PLP_GROUP_ID 0 0 0

Type 0 0 0


Rate 2/3 2/3 2/3

FEC Type 16200 16200 16200



17 35 33


17 35 33


1 1 1


(P_I)

1 1 1


1 1 1


Input stage

Mode HEM HEM HEM

ISSY Yes Yes Yes

BUFS 483328 425984 434176





0 0 0


time (p)

>>26 of 27


packets (q)

Max Cells Per T2 Frame

Common PLPs 45900 89100

Type 1 PLPs 688500 0

Type 2 PLPs 0 656100

Dynamic Block Numbers

PLP_GROUP_0

Total FEC blocks common PLP

17 35 33

Total FEC blocks type 1 85 0 0

Total FEC blocks type 2 0 82 81

Max FEC blocks per PLP type 1

57 0 0


0 57 57

PLP_GROUP_1

Total FEC blocks common PLP

Total FEC blocks type 1

Total FEC blocks type 2



>>27 of 27

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