Scalable image transmission over differentially space-time coded OFDM systems

Author

Sun, Yong ; Xiong, Zixiang ; Wang, Xiaodong

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

1

fYear

2002

fDate

17-21 Nov. 2002

Firstpage

379

Abstract

This paper combines joint source-channel coding, differential space-time coding and OFDM for scalable image transmission over differentially space-time coded OFDM (DSTC-OFDM) systems. The SNR versus BER performance of these systems are measured by simulation. We consider transmitting embedded source bitstreams over such systems using product channel codes that are designed to combat both bit errors and fading. For a given average SNR (hence BER), a fast joint source-channel coding algorithm is used to optimize the product code rates. Experiments show that the diversity gain in our DSTC-OFDM system can be translated into quality gains (in PSNR) in transmitted images.

Keywords

OFDM modulation; combined source-channel coding; error statistics; fading channels; mobile radio; optimisation; product codes; space-time codes; variable rate codes; video coding; visual communication; BER performance; DSTC-OFDM systems; PSNR; average SNR; bit errors; differential space-time coding; diversity gain; embedded source bitstreams; fading; joint source-channel coding; optimization; product channel codes; product code rates; quality gains; scalable image transmission; Bit error rate; Decoding; Fading; Image coding; Image communication; OFDM; Performance evaluation; Product codes; Receiving antennas; Sun;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE

Print_ISBN

0-7803-7632-3

Type

conf

DOI

10.1109/GLOCOM.2002.1188105

Filename

1188105