1© 2016 The MathWorks, Inc.

WLAN, LTE and 5G System Design

김용정부장(James.kim@mathworks.com)Application EngineerMathWorks

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Agenda

§ Innovations & Workflows in Mobile Communications

§ Waveform Generation and End-to-end Simulation – WLAN, LTE, 5G (FBMC, UFMC)

§ RF Instrument & Software-Defined Radio Connectivity– Transmission/Reception of LTE/WLAN Signals with

SDRs

§ Summary

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Evolution of Air Interface Technologies

4G 5G ?

5G standardization

IEEE 802.11 WLAN

standards

3GPP LTE, LTE-A

Rel-8Dec 2008 Rel-9

Dec 2009 Rel-10Mar 2011 Rel-11

Mar 2013 Rel-12Mar 2015 Rel-13

Mar 2016

Massive MIMO

New Modulations

New Frequency bands

Small Cells, HetNets

Requirements Higher data ratesEfficient spectrum useSpatial resourceLow delay & link adaptability Reliable service everywhereHigh connection density

Proposed enabling technologies

802.11ad802.11ax802.11ay802.11ah

2016 2018 2020+

Rel-14

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Workflow/Use-cases of wireless designers

End-to-End Simulations Measurements

Signal Generation

Packet successfully decoded!

Packet detected

VHT-SIGA Decoded

Signal Detection

ZynqSDR

RFSignalGenerator

HW & Radio Connectivity

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Did you know MATLAB/Simulink can help you with …

Design and VerificationSimulate baseband and RF systemsIncluding LTE & WLAN standards

Over-the-air testingValidate models with SDR and RF instruments

Prototyping and ImplementationDeploy algorithms onto target system

Simulation

Testing

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1. Perform waveform generation and end-to-end simulation of LTE, WLAN systems

2. Explore proposed 5G waveforms with FBMC, UFMC modulation schemes

3. Perform measurements (EVM, BER, PER, … ) and analyze received waveforms

4. Go beyond simulation: Connect waveform to RF instruments and SDRs for over-the-air transmission and recovery of live radio signals

What you will learn today

7© 2016 The MathWorks, Inc.

WLAN systems

Waveform Generation & End-to-end Simulation with MATLAB

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WLAN 802.11ac TransceiverDemo

ReceiverTransmitter Channel

Test Waveform Generation

Synchronisation & OFDM Demodulation

Channel Estimation&

EqualisationFading Channel

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WLAN System Toolbox

“Provides standard-compliant functions for the design, simulation, analysis, and testing of WLAN systems.”

§ Physical layer models for 802.11a/b/g/n/ac

§ Open, customizable MATLAB code

§ Transmitter & Receiver implementations

§ TGn & TGac channel models

§ C-code generation enabled with MATLAB Coder

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For more information …

§ Consult WLAN Product Pagewww.mathworks.com/products/wlan-system/

– Provides overview of WLAN capabilities – Organized based on use-cases

§ Consult Wireless Communications Pagewww.mathworks.com/wireless

– Provides overview of today’s MATLAB® for Wireless System Design

§ For details: Attend Upcoming Recorded Webinar:– “Introducing WLAN System Toolbox”

11© 2016 The MathWorks, Inc.

LTE/LTE-A systems

Waveform Generation & End-to-end Simulation with MATLAB

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LTE/LTE-A TransceiverReceiverTransmitter Channel

Test Waveform Generation

Synchronisation & OFDM Demodulation

Channel Estimation&

EqualisationFading Channel

Demo

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LTE System Toolbox

§ LTE and LTE-Advanced (Rel-8 through Rel-12)§ Scope

– FDD/TDD, – Uplink/Downlink– Transmitter/Receiver

§ ~200 functions for physical layer (PHY) modeling§ Signal generation for LTE & UMTS§ ACLR/EVM measurement§ Conformance Tests

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For more information …

§ Consult LTE Product Pagewww.mathworks.com/products/lte-system/

– Provides overview of LTE/LTE-A capabilities – Organized based on use-cases

§ Consult Wireless Communications Pagewww.mathworks.com/wireless§ Provides overview of today’s MATLAB®

for Wireless System Design

§ For details: Attend Recorded Webinar:– “Introducing LTE System Toolbox”

15© 2016 The MathWorks, Inc.

5G new modulation candidates: FBMC, UFMC

Waveform Generation & End-to-end Simulation with MATLAB

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§ 5G systems require both spectral efficiency and robust synchronization

§ Majority of candidates: Multi-carrier, Non-Orthogonal waveforms

§ Members of “filtered” OFDM designs:1. FBMC: Filter-Bank Multi-Carrier2. UFMC: Universal Filtered Multi-

Carrier3. GFDM: Generalized Frequency

Division Multiplexing

5G Waveforms: New Modulation Schemes

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Filter-Bank Multi-carrier (FBMC)

§ Introduce per-subcarrier filtering to reduce the side-lobes§ Couple of implementation options:

– Frequency spreading (extended iFFT/FFT)– Poly-phase network (more efficient, commonly employed)

Disadvantages:§ Non-orthogonal in complex plane, overlapped symbols§ A more complicated receiver structure, esp. for MIMO

Demo

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Universal Filtered Multi-carrier (UFMC)

§ Filtering applied per sub-bands (not per sub-carrier as in FBMC)– Filtering parameterized by side-lobe attenuation– Reduced filter length (compared to FBMC)– Good for short bursts, suited for uplink with multiple users

§ Orthogonal in the complex plane– use QAM symbols, reapply MIMO schemes

§ Receiver complexity– Similar to OFDM, use per subcarrier equalization

Demo

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5G Challenges and Our solutions§ New Modulation Schemes

– Performance characteristics of FBMC, UFMC, etc.

§ More Antennas– Beamforming and precoding algorithms – Antenna arrays and Massive MIMO

§ New Frequency Bands– RF system architectures design in mmWave frequencies– Advanced Antenna, RF and DSP Co-Design– Channel modeling from real-world measurement data

§ Real Hardware Verification and Prototyping– Hardware testbed to verify designs with live radio signals in realistic scenarios

for standards such as LTE & Wi-Fi– Quick prototyping on FPGA

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For more information …

§ Consult 5G Discovery Pagewww.mathworks.com/discovery/5g-wireless-technology.html

§ Consult Wireless Communications Pagewww.mathworks.com/wireless

– Provides overview of today’s MATLAB® for Wireless System Design

21© 2016 The MathWorks, Inc.

Connectivity to RF instruments & SDR

Over-the-air testing and Verification with Radio/Hardware in MATLAB

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Over-the-air testing

Input bits

Antenna Array

(MIMO)

ChannelCoding &

ModulationMulti-carrier

Transmitter

Transmitter

Receiver

De-Modulation & Channel Decoding

EqualizerChannel

estimation

Output bits

Source Coding

Source Decoding

Channel

Noise

Large-scale fading

(path-loss …)

Small-scale fading

(Multipath, Doppler effects)

Interference

Over-the-airTransmission

&Reception

Demo

LTE or WLAN

LTE or WLAN

Time & Frequency

offset detection/

Compensation

End-to-end simulation

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Hardware & Radio Connectivity

Generate customwaveforms

Transmit with SDR devices or RF instruments

Capture signals with SDR or instruments

Recoveroriginal data

RFSignalGenerator

SpectrumAnalyzer

ZynqRadioSDR

USRPSDR

Range of supported hardware

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Supported SDRs & RF instruments

RF Signal Generator

Zynq Radio SDR

USRP SDR

RF Spectrum Analyzer

Zynq Radio SDR

USRP SDR

RTL SDR

Transmitter Receiver

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For more information …

§ Consult SDR Discovery Pagehttp://www.mathworks.com/sdr

§ Consult Wireless Communications Page

www.mathworks.com/wireless– Provides overview of today’s

MATLAB® for Wireless System Design

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Summary:With Today’s MATLAB you can …Design and VerificationSimulate baseband and RF systems

• 5G, WLAN, LTE and custom waveform generation• Measurements (EVM, BER, PER, … ) & analysis of received

waveforms • Transmitter-Channel-Receiver end-to-end simulation

Over-the-air testingValidate models with SDR and RF instruments

• Connect LTE/WLAN signals to USRP or Zync Radio• Live experiments with Video/music/audio as input signals• Measurements (EVM, BER, PER, … ) & analysis of over-the-air received

waveforms