Title :
Iterative source-channel decoding using soft-in/soft-out decoders
Author_Institution :
Inst. of Circuits & Syst. Theory, Kiel Univ., Germany
Abstract :
The concept of iterative decoding of concatenated channel codes is applied to joint source-channel decoding (JSCD). Extrinsic information from the soft-in/soft-out channel decoder is used as a priori information for the new soft-in/soft-out source decoder and vice versa. In this novel iterative approach the redundancies within the data-bits and the channel codewords are alternately exploited in order to approximate the highly complex optimal JSCD
Keywords :
combined source-channel coding; concatenated codes; iterative decoding; redundancy; JSCD; a priori information; channel codewords; concatenated channel codes; data-bits; iterative decoding; iterative source-channel decoding; joint source-channel decoding; redundancies; soft-in/soft-out decoders; Circuits and systems; Computational modeling; Concatenated codes; Convolutional codes; Error correction; Iterative algorithms; Iterative decoding; Iterative methods; Redundancy; Turbo codes;
Conference_Titel :
Information Theory, 2000. Proceedings. IEEE International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
0-7803-5857-0
DOI :
10.1109/ISIT.2000.866468
