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In recent years Software-Defined Radio (SDR) based technologies are in wide use for
wireless communication systems. The most significant advantage of SDR is adaptability.
Wireless systems employ protocols that vary from one service to another. Even in the
same type of service, for example wireless fax, the protocol often differs from country to
country. A single SDR set with an all-inclusive software range can be used in any mode,
anywhere in the world. Changing the service type, the mode, and/or the modulation protocol
involves simply selecting and launching the essential computer program, and making
sure the batteries are adequately charged if portable operation is contemplated.
The purpose of this study was to design a SDR realization platform. We have chosen
GSM system as a model. Thesis includes initially studies about the history of mobile
communication and then GSM in more details. We have also studied about technological
and mobile handset challenges. TI DSP TMS-320C6713 is taken for the purpose of
baseband processing of the SDR realization. Up to the IF (Intermediate Frequency) level
we have implemented each and every portion of the GSM system in MATLAB. Finally
some of the parts are verified on DSP for SDR realization. Also simulated channel environment
for AWGN and AWGN with Rayleigh fading with channel coding using both
VIterbi decoder and our designed Iterative decoder. Finally we have tested image, data,
and voice with our SDR realization module. Although we can not prove the Ideal SDR
but, re-configurability we can prove by uploading and downloading the various program
as user needs |
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eetop公众号
创芯大讲堂
创芯人才网
发表于 2009-8-2 09:38:30
