Title :
On the Performance of Incremental Redundancy Hybrid ARQ Schemes with Rate Compatible LDPC Codes
Author :
Wen, Hong ; Zhou, Liang ; Fu, Chusheng
Author_Institution :
Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
Rate compatible LDPC codes with only one parity check matrix can be applicable to rate matching. An incremental redundancy hybrid ARQ scheme based on rate compatible LDPC codes is introduced. We studied the throughput of the new HARQ scheme. Furthermore, the throughput of the new HARQ scheme is simulated. It shows that for arbitrary block fading channel, comprising AWGN channel, the performance of IR_HARQ schemes based on RC-LDPC is same as those based on random LDPC. But the encoding and decoding of RC_LDPC is simpler, and the wider range changing of code rates of RC_LDPC can be obtained than those of random LDPC
Keywords :
AWGN channels; automatic repeat request; block codes; decoding; fading channels; matrix algebra; parity check codes; AWGN channel; IR_HARQ; RC_LDPC; additive white Gaussian noise; block fading channel; decoding; encoding; hybrid automatic repeat request scheme; incremental redundancy scheme; parity check matrix; rate compatible low density parity check code; rate matching; Automatic repeat request; Convolutional codes; Decoding; Error correction codes; Fading; Forward error correction; Matrix decomposition; Parity check codes; Redundancy; Throughput;
Conference_Titel :
Communications, Circuits and Systems Proceedings, 2006 International Conference on
Conference_Location :
Guilin
Print_ISBN :
0-7803-9584-0
Electronic_ISBN :
0-7803-9585-9
DOI :
10.1109/ICCCAS.2006.284758
