Title :
Performance of Non-Binary RS-Turbo Concatenated Codes
Author :
Shi, Ping ; Hou, Ming-Rui ; Lv, Rui
Author_Institution :
Sch. of Inf. Eng. Commun., Univ. of China, Beijing
Abstract :
In this paper the encoder structure of non-binary turbo codes is presented and the symbol-by-symbol log-MAP decoding algorithm is analyzed in detail. A new scheme of RS-turbo concatenated codes is designed which includes an RS code (255,239,8) and a non-binary Turbo code built from two RSC component codes with m=2 inputs. The simulations were made for frame length N=2048 bits and for the maximum iteration number of 8. The AWGN channel and the BPSK modulation were employed. The simulation results show that the proposed scheme can significantly improve the BER performance at high SNR and reduce the iteration number compared to the conventional non-binary turbo code. Furthermore, the concatenated RS code can supply a simple stopping criterion for Turbo iterative decoding.
Keywords :
AWGN channels; Reed-Solomon codes; error statistics; phase shift keying; turbo codes; AWGN channel; BER performance; BPSK modulation; RS codes; Reed-Solomon codes; additive white Gaussian noise channels; binary phase shift keying; bit error rate; nonbinary RS-turbo concatenated codes; symbol-by-symbol log-MAP decoding algorithm; turbo iterative decoding; AWGN channels; Algorithm design and analysis; Binary phase shift keying; Bit error rate; Concatenated codes; Information analysis; Iterative algorithms; Iterative decoding; Performance analysis; Turbo codes;
Conference_Titel :
Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1707-0
Electronic_ISBN :
978-1-4244-1708-7
DOI :
10.1109/ICCSC.2008.169
