Iterative Source/Channel-Decoding Using Reversible Variable Length Codes
DCC '00 Proceedings of the Conference on Data Compression
On Variable Length Codes for Iterative Source/Channel Decoding
DCC '01 Proceedings of the Data Compression Conference
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In this work (http://www.personal.psu.edu/mxp190/research/pub), we develop improved joint source-channel (JSC) methods for decoding variable length encoded data based on residual source redundancy. Until very recently, all JSC methods based on residual redundancy assumed fixed length codewords. Recently, several different variable rate approaches were independently proposed [2], [1]. In [3], the practically realizable system which performed the best over a significant range of channel conditions consisted of inner binary convolutional (BC) (bit-level) decoding, followed by outer (symbol-level) approximate maximum a posteriori (MAP) JSC decoding. Here we suggest two ways of improving on this method.