DocumentCode :
640332
Title :
Reliability-based error detection for feedback communication with low latency
Author :
Williamson, Adam R. ; Tsung-Yi Chen ; Wesel, Richard D.
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, Los Angeles, CA, USA
fYear :
2013
fDate :
7-12 July 2013
Firstpage :
2552
Lastpage :
2556
Abstract :
This paper presents a reliability-based decoding scheme for variable-length coding with feedback and demonstrates via simulation that it can achieve higher rates than Polyanskiy et al.´s random coding lower bound for variable-length feedback (VLF) coding on both the BSC and AWGN channel. The proposed scheme uses the reliability output Viterbi algorithm (ROVA) to compute the word error probability after each decoding attempt, which is compared against a target error threshold and used as a stopping criterion to terminate transmission. The only feedback required is a single bit for each decoding attempt, informing the transmitter whether the ROVA-computed word-error probability is sufficiently low. Furthermore, the ROVA determines whether transmission/decoding may be terminated without the need for a rate-reducing CRC.
Keywords :
AWGN channels; cyclic redundancy check codes; decoding; error detection codes; error statistics; feedback; random codes; reliability; variable length codes; AWGN channel; BSC channel; CRC; ROVA; cyclic redundancy check codes; feedback communication; random coding lower bound; reliability based decoding scheme; reliability based error detection; reliability output Viterbi algorithm; target error threshold; variable length coding; variable length feedback coding; word error probability; AWGN channels; Channel coding; Convolutional codes; Decoding; Reliability; Viterbi algorithm;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on
Conference_Location :
Istanbul
ISSN :
2157-8095
Type :
conf
DOI :
10.1109/ISIT.2013.6620687
Filename :
6620687
Link To Document :
بازگشت