Title :
A Novel Scheme for Type-II Hybrid ARQ Protocols Using LDPC Codes
Author :
Chen, Liang ; Shi, Xiumin ; Yan, Shijun ; Wu, Ziyu ; Zhang, Wenjun ; Guan, Yunfeng
Author_Institution :
Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ.
Abstract :
In this paper, we propose a novel type-II hybrid ARQ scheme using low density parity check (LDPC) codes. The proposed approach combines low hardware overhead with good decoding performance by using an efficient decoder operating at a much higher rate with a much smaller size parity check matrix. Our scheme makes parts of the previously received data gradually improved until successful decoding of the entire original codeword. We also present a novel efficient framework for constructing rate-compatible LDPC codes applied in our hybrid ARQ scheme. The progressive edge growth (PEG) construction method with zigzag pattern results in linear-time encoding.
Keywords :
automatic repeat request; encoding; parity check codes; automatic repeat request; linear-time encoding; low density parity check codes; parity check matrix; progressive edge growth; rate-compatible LDPC codes; type-II hybrid ARQ protocols; Automatic repeat request; Circuits; Communications Society; Energy consumption; Forward error correction; Hardware; Iterative decoding; Parity check codes; Protocols; Redundancy;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.131