Software Defined Radio Technology

Digital signalhandling

Digital basebandprocessing

Digital IFprocessing

Digital RFprocessing

Functional model

#1 RF Channel

#2 RF Channel

#16 RF Channel

External Noise Source

SPDT

Monitor outputfor calibration

SUT

ControlSW

PC

Co

ntr

ol B

US

A: Audio in from tape recorder

A

A

RF

External RF Source

A

Control computer RF channels Output stage

POWER CONTORLBITE OUT

AF INPUT

CS-2500-E

IP adsress:192.168. 2.102

< >MENU ENTER RF OUT

POWER CONTORLBITE OUT

AF INPUT

CS-2500-E

IP adsress:192.168. 2.101

< >MENU ENTER RF OUT

Commsim 2500-2C configuration

Control computer platform

OUT1

OUT2

EXT 1

EXT 2

IN 1 - 4 IN 5 - 8 IN 9 -12 IN13 -16

Ethernet HUB

CS-2500-E emitter #2

CS-2500-E emitter #1

CS-2500-S summer

CS-2500-2C configuration

Emitter functional description

RF Channel unit

FrequencyConversion

Unit(FCU)

Con

trol

BU

SA

udio

in f

rom

tap

e re

cord

er

RF

out

Channel Controller Unit (CCU)

FrequencyExtension

Unit(FEU)

SignalProcessor

Unit(DSP)

Digital Modulator

Unit(DMU)

Baseband Unit (BBU) Radio Frequency Unit (RFU)

BIT

E in

terf

ace

CS-2500-E chanel unit

Digital Signal Processor (DSP)

DSP

Data

Address

DMA REQ

DMA ACK

EXT ADC

RAM BasebandModulationGenerator

I

Q

INT

EXT

DSP Unit

CTRL

Spreading and Converter of the Digital Modulator Unit

Serialport

Serialport

Serialport

Serialport

Spreadingand

SerialConverter

Data

Address

DMA REQ

DMA ACK

Par

alel

DM

A b

ased

inte

rfac

e to

DS

P

Ser

ial i

nter

face

to u

p co

nver

ters

Up Converter and Carrier generator of the Digital Modulator Unit

Serialport

RAMCoefficientFilter (RCF)

CascadedIntegrator

Comb (CIC) FilterNCO

Serialport

RAMCoefficientFilter (RCF)

CascadedIntegrator

Comb (CIC) FilterNCO

Serialport

RAMCoefficientFilter (RCF)

CascadedIntegrator

Comb (CIC) FilterNCO

Serialport

RAMCoefficientFilter (RCF)

CascadedIntegrator

Comb (CIC) FilterNCO

SCLK

DATA

SDFS

SCLK

DATA

SDFS

SCLK

DATA

SDFS

SCLK

DATA

SDFS

OUT

DUC Unit

OUT

OUT

OUT

Digital Modulator and Summing of the Digital Modulator Unit

MOD

MOD

MOD

MOD

OUT

DigitalSumming

Unit

DAC

Modulator Units Digital Summing

OUT

OUT

OUT

DAC

DIF OUT

Frequency Conversion Unit

LIFM LIFB

LIFL

HIFM HIFB

HIFL

AMPDigital IFinput

MCUControl

port

-10dBm-10dBm

IF ATT

High IFoutput

Frequency Extension Unit

OM

OL

OLP AMPRF

ATTRF

output

0dBm-20dBm

MCUControl

port

High IFinput

Connections of Channel Controller Unit

Serialport

Serialport

Serialport

Serialport

ChannelController

Unit

Channel Control

FEU

FCU

MOD

DSP

Ethernet

Serial port

Controlinterface

to PC

BITEinterface

Paralel portDisplay

andfunction keys

IP based equipment control

A CS-2500-E upside view

Tápegység

Modulator+DSP

TCXO referencia

Előlap

A CS-2500-E downside viewHátlap

Frekvenciakonverter

Frekvenciakiterjesztő

Csatornavezérlő

A CS-2500-Evibration tests

A CS-2500-E climatic tests

Control panel of the emitter unit

Scenario editor

GIS based map view of the scenario