The “Hardware in the Loop” concept enables a cost effi cient wireless system design for future wireless systems. It addresses the problems within the algorithm design stage and provides the designer with a toolkit for early proof-of-concept R&D. Built upon Signalion’s fl exible and scalable hardware platform, HaLo is a sys-tem especially designed for seamless integra-tion in the Matlab/Simulink and C-based design fl ows. No hardware programming is needed by the user to setup a HaLo transmission.

HaLo allows the designer to transmit simulated signals over an air-interface, to receive them, and to send them back to Matlab/Simulink simulation environment. With this approach the designer faces all problems of real world transmission, such as channel estimation

errors, RF-impairments, and real world ra-dio channel characteristics already in the fi rst design phase. These are issues that cannot be realistically covered by pure simulations. Therefore, many of the potential design faults and limitations can be discovered at this early stage of the design fl ow by using the HaLo sys-tem. The easy-to-use programming interface also makes HaLo a perfect tool for education and academic research.

HaLo supports a wide range of applications as a

• Wireless Signal Monitoring Tool• Arbitrary Waveform Generator• Wireless System Simulation/Prototyping

System

HaLo hardware in the loop prototyping & monitoring platform

HaLo

drivin

g t

he w

irele

ss f

utu

re

halo_transmit(TxSignal,ctrl(1)) RxSignal = halo_receive(ctrl(2))

Transmitter ModelMatlab/ Simulink

SystemEvaluation

Receiver ModelMatlab/ Simulink

HaLo

drivin

g t

he w

irele

ss f

utu

reHaLo-Arbitrary Waveform Generator

In this mode, HaLo serves as a waveform gen-erator that transmits an arbitrary waveform with a bandwidth up to 20MHz. The signal can be either transmitted periodically or on certain trigger events.

HaLo-Wireless Signal Monitoring

Confi gured as a receiver, HaLo records the baseband waveform of a received RF-signal. This signal can be fed into simulations to fur-ther analyze the characteristics.

HaLo-Wireless System Simulation/Prototyping

The HaLo system simply replaces the channel model within the simulation. Two HaLo devices simulate both the Transmitter and the Receiver of the wireless link. Simulation of an ad-hoc network with many terminals is possible using multiple HaLo systems.

Seamless MATLAB/Simulink integration offers plug’n play operation

HaLo offers Plug & Play interconnection to PC via USB 2.0 with any PC. An ‘easy to use’ ap-plication programming interface (API) enables seamless integration of the hardware into your simulation environment just by means of two functions (halo_transmit, halo_receive). Cur-rently MATLAB/Simulink and C are supported by the API. Signal bursts are periodically trans-mitted. Measurements of the received signals can be done on user request or automatically within a defi ned interval.

Signalion is a product partner of The Math-Works Inc., MATLAB® and Simulink® are registered trademarks of The MathWorks, Inc.

HALO X20- BASIC SERIESThis system can support research for many current and future wireless standards such as IEEE 802.11 a/b/g/n, DVB-T/H, UMTS, WiMAX, and others. The perfect tool for research & development for industry and academia

FeaturesRF bands:Bandwidth: Signal sampling Rates: Maximum Signal length:

license-free ISM bands @ 2.4 or 5.1-5.8 GHz up to 20MHz5, 10 or 20 MHz. 2,000,000 samples (0.4 s @ 5 MHz data rate)

HaLo 120 Basic Module1 Tx-Antennas1-Rx Antennas

Easy-to-use, cost efficient solution for research and teaching

HaLo 220 Antenna Diversity Module2 Tx-Antennas2 Rx-Antennas

Extended usability for advanced wireless research & development for industry and academia

HALO X30- PROFESSIONAL SERIESThis system was designed with a focus on the needs of professional LTE and WiMAX developers. However it can support research for many current and future wireless standards such as IEEE 802.11 a/b/g/n, DVB-T/H, UMTS, and others. The Interface to Tektronix K18 protocol monitoring solution offers a wide range of monitoring application and evaluation.

FeaturesRF bands:

Bandwidth: Signal sampling Rates: Maximum Signal length:

UMTS-band I: 1920-1980 MHz (Tx ), 2110-2170 MHz (Rx )UMTS-band VII: 2500-2570 MHz (Tx ), 2620-2690 MHz (Rx )Other RF-bands on request up to 20MHzSampling Rates: 5,10,8,12.5,20,40 MHz up to 2^27 Samples (26s @ 5MHz)

HaLo 130 Basic Module 1 Tx-Antenna1 Rx-Antenna

Easy-to-use, cost efficient solution

HaLo 230 Antenna Diversity Module2 Tx-Antennas2-Rx Antennas

System for UMTS & LTE design and verification

HaLo 430 MIMO Module4 Tx-Antennas4 Rx-Antennas

Advanced hardware-in-the-loop environment for MIMO-application and beamforming

AVAILABLE SOFTWARE PACKAGES (STANDARD CONFORM MATLAB MODELS)IEEE 801.11a Reference PHY-simulation Model MATLAB

WiMAX Reference PHY-simulation Model MATLAB

USE CASES

HaLo System Options

A wide range of applications and simulation examples for HaLo can be found on:

http://www.signalion.com

This collection of examples can be used on an open source basis for academia and research. They cover a wide range of wireless applications such as:

• simple digital communication algorithms• examples of different wireless standards• wireless channel estimation measurement• wireless channel emulation• space-time algorithms

All i

nfor

mat

ion

on th

is fl

yer

are

subj

ect t

o ch

ange

. © S

igna

lion

Gm

bH 2

008

(M01

1-v3

-0),

Des

ign:

Med

ienT

eam

Dre

sden

Gm

bH, P

hoto

s: K

. Gas

tman

n, J

. Jei

bman

n

Signalion is an active member of the LTE/SAE Trial Initiative (LSTI) supporting activities with measurement and monitoring equipment. The LSTI was launched in May 2007 by leading tele-communications companies. Signalion was the fi rst test & measurement supplier to join this group and contributes actively to LTE fi eld trials.

Signalion GmbH, Sudhausweg 5D-01099 Dresden, Germany

Fon +49 351 20693130Fax +49 351 20693111Mail sales@signalion.com

CONTACT