Title :
Enhancement of turbo codes using cyclic redundancy check with interleaver optimisation
Author :
Rogers, Andrew John ; Tomlinson, Martin ; Ambroze, Marcel Adrian ; Ahmed, Mohammed Zaki
Author_Institution :
Digital Commun. Res., Univ. of Plymouth, UK
fDate :
27 June-2 July 2004
Abstract :
A method is presented where a parallel concatenated convolutional code is preceded with a short cyclic redundancy check (CRC) without code rate loss. Parity bits are punctured and their place taken by the CRC. Results are given for the weight spectrum of an optimised code, rate 2/3, codeword length, n=1014 in comparison with an optimised, nonCRC code using the same rate and codeword length. Frame error rate performance achieved is within 0.36dB of the sphere packing bound constrained for binary transmission.
Keywords :
concatenated codes; convolutional codes; cyclic redundancy check codes; error statistics; interleaved codes; optimisation; parity check codes; turbo codes; binary transmission; codeword length; cyclic redundancy check; frame error rate; interleaver code optimisation; parallel concatenated convolutional code; parity bit; sphere packing bound constraint; turbo code; weight spectrum; Concatenated codes; Convolutional codes; Cyclic redundancy check; Cyclic redundancy check codes; Design optimization; Digital communication; Error analysis; Iterative decoding; Optimization methods; Turbo codes;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365544
