software defined radio

G.H RAISONI COLLEGE OF ENGINEERING (An Autonomous Institute Under UGC act 1956 & affiliated to R.T.M. Nagpur

University)Department Of Electronics & Telecommunication Engineering,

Session 2014-15

Presentation On “SOFTWARE DEFINED RADIO (SDR)”

Submitted By:- AMIT V. LUTE

M.Tech I SEM.(Communication Engg.)

Roll No. 13

PAPER ID# 900943.PDF IEEE PAPER

“A SOFTWARE DEFINED RADIO TRANSFORMATION”

By:- John L. Shanton III (Thales Communications, Inc., 22605 Gateway Center Drive, Clarksburg, MD, USA, [email protected]) May 17, 2009

Reference

• Radio that provides software control of a variety of modulation techniques, wideband or narrowband operation, communication security functions and waveform requirements of current and evolving standards over abroad frequency range.

• Software-Defined Radio (SDR) refers to the technology wherein software modules running on a generic hardware platform consisting of DSPs and general purpose microprocessors are used to implement radio functions such as generation of transmitted signal (modulation) at transmitter and tuning/detection of received radio signal (demodulation) at receiver.

What is SDR ?

• Commercial wireless communication industry is currently facing problems due to constant evolution of link-layer protocol standards (2.5G, 3G, and 4G)

• Existence of incompatible wireless network technologies in different countries inhibiting deployment of global roaming facilities

• Problems in rolling-out new services/features due to wide-spread presence of legacy subscriber handsets.

Motivation of SDR ?

SDR-HARDWARE ARCHITECHTUREIn

form

ation

outp

utIn

form

ation

inpu

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DSP

/ FP

GA

Digital UpConverter

Ante

nna

switc

hing

syst

em

Digital DownConverter

WidebandDAC

WidebandADC

RFupconverter

RF downconverter

RF Poweramplifier

RF low-noiseamplifier

I

Q

I

Q

IF

IF

GPP

OE, PROTOCOLS, MMI

Fig:-SDR-HARDWARE ARCHITECHTURE

VSDR-SOFTWARE ARCHITECHTURE

Fig:-SDR-SOFTWARE ARCHITECHTURE

VSDR ENABLING TECHNOLOGIES

• ADC : the single most demanding performance.

• DAC : similar to ADC requirements.

• DDC / DUC : (Digital down/up converters) programmable embedded DSP functionalities with NCO for RSP/TSP with frequency hopping capability.

• FPGAs: Embedded DSP functionalities.

• DSP : meet computational requirements of base band processing. • Host Processor : OE, Protocol stacks, MMI, system controls.

• Operating System S/W and F/W.

• Broadband RF Front End, Smart Antennas

• Multi-Carrier Power Amplifier (MCPA) in Base Stations

VSDR EXPLAINED

Fig:-Functioning of HDR and SDR

VSDR KEY BENEFITS

• A single Hardware for Multi-standard, multiband and

multifunctional Wireless Systems.

• Software Upgrade for add on functionalities.

• Customization of a single generic hardware for diverse needs.

• Higher levels of software reusability.

• Lower costs to meet new user demands.

• Lower time to market new terminals.

VSDR ADVANTAGES

• Complete Base band processing digital.

• Software upgrading of commercial radios.

• Generic hardware can be used for a variety of applications.• Software prototyping faster and cheaper than hardware prototyping.• Libraries of software radio components are easily created and shared.• Digital processing of signals is ideal, unencumbered by the non- linearities that plague analog hardware.

VSDR USER SEGMENTS

• Civil wireless

• Military

• Defence

THANK YOU…..