Title :
A new ensemble of rate-compatible LDPC codes
Author :
Zhang, Kai ; Ma, Xiao ; Zhao, Shancheng ; Bai, Baoming ; Zhang, Xiaoyi
Author_Institution :
Dept. of Electron. & Commun. Eng., Sun Yat-sen Univ., Guangzhou, China
Abstract :
In this paper, we presented three approaches to improve the design of Kite codes (newly proposed rateless codes), resulting in an ensemble of rate-compatible LDPC codes with code rates varying “continuously” from 0.1 to 0.9 for additive white Gaussian noise (AWGN) channels. The new ensemble rate-compatible LDPC codes can be constructed conveniently with an empirical formula. Simulation results show that, when applied to incremental redundancy hybrid automatic repeat request (IR-HARQ) system, the constructed codes (with higher order modulation) perform well in a wide range of signal-to-noise-ratios (SNRs).
Keywords :
AWGN channels; automatic repeat request; parity check codes; AWGN channels; IR-HARQ system; Kite codes; SNR; additive white Gaussian noise channels; incremental redundancy hybrid automatic repeat request system; rate-compatible LDPC codes; rate-compatible low-density parity-check codes; signal-to- noise-ratios; Algorithm design and analysis; Decoding; Iterative decoding; Modulation; Noise measurement; Optimization;
Conference_Titel :
Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
978-1-4673-2580-6
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2012.6283974
