Title :
Multi-rate parity accumulator accumulator codes
Author :
Park, Sung Ik ; Yang, Kyeongcheol ; Kim, Seung Won
Author_Institution :
Radio Broadcasting Lab., ETRI, Daejeon, South Korea
Abstract :
In this paper we introduce multi-rate PAA (parity accumulator accumulator) codes obtained from replacing single parity check codes with multi-rate cycle-free codes in the conventional PAA codes. They can be easily decoded by applying the sum-product algorithm to their factor graph. Using the Gaussian approximation, we investigate the noise thresholds of multi-rate PAA codes on the additive white Gaussian noise (AWGN) channel. Through simulation results, it is shown that the performance of PAA codes with multiple code rates is close to the Shannon limit over the AWGN channel.
Keywords :
AWGN channels; channel coding; iterative decoding; parity check codes; phase shift keying; Shannon limit; additive white Gaussian noise channel; binary phase shift keying; iterative sum-product algorithm; multirate parity accumulator accumulator codes; single parity check codes; AWGN channels; Additive white noise; Decoding; Gaussian approximation; Gaussian noise; Noise level; Parity check codes; Performance analysis; Radio broadcasting; Sum product algorithm;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1208803
