Title :
A novel type-II hybrid ARQ scheme
Author :
Naroska, Edwin ; Schmermbeck, S. ; Dammer, Uwe ; Schwiegelshohn, Uwe
Author_Institution :
Inst. of Comput. Eng., Dortmund Univ., Germany
fDate :
31 May-2 June 2004
Abstract :
In this paper, we present a novel constant rate (CR) type-II hybrid ARQ protocol with low-density parity-check (LDPC) codes. The decoder architecture always operates at the highest code rate, thus efficiently exploiting the decoder hardware. Incremental redundancy is generated from interleaved versions of the original data using the same encoder/decoder hardware. This way, the encoder/decoder circuit complexity can be lowered. The proposed principle is therefore especially suitable for mobile applications. The performance analysis has shown that a significant increase of the data throughput at low signal to noise ratios is obtained.
Keywords :
automatic repeat request; computational complexity; decoding; interleaved codes; mobile communication; parity check codes; automatic repeat request; constant rate type-II hybrid ARQ protocol; decoder circuit complexity; decoder hardware; encoder circuit complexity; encoder hardware; low-density parity-check code; mobile application; signal to noise ratio; Automatic repeat request; Chromium; Complexity theory; Decoding; Hardware; Parity check codes; Performance analysis; Protocols; Signal to noise ratio; Throughput;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1322923
