Title :
Convergence rates comparison of sum-product decoding of RA codes under different message-passing schedules
Author :
Tong, Sheng ; Bai, Baoming ; Wang, Xinmei
Author_Institution :
State Key Lab of ISN, Xidian Univ., Xi´´an, China
fDate :
6/1/2005 12:00:00 AM
Abstract :
In iterative decoding of turbo-like codes, serial schedule generally provides a much faster convergence rate compared with parallel schedule. With the aid of extrinsic information transfer (EXIT) charts, sum-product decoding of repeat accumulate (RA) codes under both message passing schedules is investigated as an example for verifying the above statement.
Keywords :
concatenated codes; iterative decoding; message passing; turbo codes; EXIT charts; RA; convergence rates; extrinsic information transfer; iterative decoding; message passing schedule; repeat accumulate code; sum-product decoding; turbo codes; AWGN channels; Binary phase shift keying; Concatenated codes; Convergence; Floods; Iterative decoding; Message passing; Mutual information; Parity check codes; Sum product algorithm;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.1437365
