Title :
A joint source/channel coder with block constraints
Author :
Otu, Hasan H. ; Sayood, Khalid
Author_Institution :
Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA
fDate :
11/1/1999 12:00:00 AM
Abstract :
The assumptions made about the source during source coder design result in a residual redundancy at the output of the source coder. This redundancy can be utilized for error protection without any additional channel coding. Joint source/channel coders obtained using this idea via maximum a posteriori probability decoders tend to fail at low probability of error. In this paper, we propose a modification of the standard approach which provides protection at low error rates as well
Keywords :
Viterbi decoding; combined source-channel coding; differential pulse code modulation; error correction; error detection; error statistics; sequential decoding; DPCM system; block constraints; channel coding; error correction; error detection; error protection; joint source/channel coder; list Viterbi decoder; low error probability; low error rates protection; maximum a posteriori probability decoders; residual redundancy; sequence MAP decoder; source coder design; Bit rate; Channel coding; Concatenated codes; Decoding; Error analysis; Error correction codes; Protection; Pulse modulation; Redundancy; Source coding;
Journal_Title :
Communications, IEEE Transactions on
