Paper Info
Title
Robust video transmission over wideband wireless channel using space-time coded OFDM systems
Abstract
A space-time coded orthogonal frequency-division multiplexed (STC-OFDM) system is proposed to transmit layered video signals over wireless channels. The space-time coding can provide a diversity gain for the multiple-antenna system while OFDM can alleviate the frequency-selective fading effect. An input video sequence is compressed and partitioned into layers with different priorities. Then, an unequal error protection scheme based on the product Reed-Solomon (RS) codes is employed to provide different levels of protection to different layers. At the receiver, a minimum mean square error (MMSE) detector with interference cancellation (IC) is integrated with the space-time decoder to reconstruct the desired signal effectively. We derive an analytic bound for the error probability, and conduct experiments for the transmission of the H.263 video bitstream. It is shown that the proposed scheme enhances the PSNR performance significantly in the environment with a moderate signal-to-noise ratio.
Year
DOI
Venue
2002
10.1109/WCNC.2002.993396
WCNC
Keywords
Field
DocType
error probability,modulation coding,stc-ofdm system,space-time decoder,diversity reception,input video sequence,unequal error protection scheme,space-time coded ofdm systems,h.263 video bitstream,frequency-selective fading effect,psnr performance,reed-solomon codes,ofdm modulation,visual communication,receiver,diversity gain,space-time coded orthogonal frequency-division multiplexed system,layered video signals,multiple-antenna system,antenna arrays,error correction codes,broadband networks,fading,least mean squares methods,wireless channels,video coding,minimum mean square error detector,product reed-solomon codes,signal reconstruction,robust video transmission,radio receivers,mmse detector,interference cancellation,combined source-channel coding,error statistics,wideband wireless channel,signal detection,rs codes,space time code,robustness,video compression,frequency division multiplexing,frequency diversity,signal to noise ratio,ofdm,space time,minimum mean square error,reed solomon
Diversity gain,Telecommunications,Fading,Computer science,Single antenna interference cancellation,Communication channel,Minimum mean square error,Electronic engineering,Real-time computing,Multiplexing,Detector,Orthogonal frequency-division multiplexing
Conference
Volume
ISSN
ISBN
2
1525-3511
0-7803-7376-6
Citations 
PageRank 
References 
25
1.85
4
Authors
3
Name
Order
Citations
PageRank
Chih-Hung Kuo18614.77
Chang-Su Kim21524137.29
C.-C. Jay Kuo37524697.44