DocumentCode :
2812020
Title :
Turbo decoding for PR4: parallel versus serial concatenation
Author :
Souvignier, Tom ; Friedmann, Arnon ; Öberg, Mats ; Siegel, Paul H. ; Swanson, Robert E. ; Wolf, Jack K.
Author_Institution :
California Univ., San Diego, La Jolla, CA, USA
Volume :
3
fYear :
1999
fDate :
1999
Firstpage :
1638
Abstract :
Recent work on the application of turbo decoding techniques to partial response class 4 (PR4) channels has focused on parallel concatenation systems that require three a posteriori (APP) detectors. A simplified serial concatenation system is presented that uses as its outer code a single convolutional code and as its inner code the partial response channel. An extension of this serial concatenation system is also presented that combines a second code with the channel, forming a more powerful inner code. Both proposed systems require only two APP detectors, offering significant savings in complexity and computation time. These serial concatenation systems are shown to perform as well as the more complicated parallel concatenation systems, offering substantial gains over uncoded systems. Additionally, the effect of precoding is investigated. Simulation results comparing the parallel and serial concatenation systems are also presented
Keywords :
concatenated codes; convolutional codes; partial response channels; signal detection; turbo codes; APP detectors; PR4 channels; a posteriori probability; computation time; convolutional code; inner code; outer code; parallel concatenation; partial response class 4 channels; precoding; serial concatenation; turbo decoding; uncoded systems; AWGN; Concatenated codes; Convolutional codes; Detectors; Iterative decoding; Lifting equipment; Partial response channels; Performance gain; Probability; Turbo codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
Type :
conf
DOI :
10.1109/ICC.1999.765510
Filename :
765510
Link To Document :
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