Title :
Reliability-based subpacket transmission for hybrid ARQ with LDPC codes
Author :
Jia Minli ; He Zunwen ; Kuang Jingming ; Fei Zesong
Author_Institution :
Beijing Inst. of Technol., Beijing
Abstract :
An irregular LDPC coded sub-packet hybrid ARQ (HARQ) scheme based on instantaneous reliability is presented for selection and retransmission. Reliability-based (RB) HARQ was initially proposed for Turbo coded case with iterative decoding, whereas for irregular LDPC coded scenario, a degree distribution based (DDB) retransmission strategy was presented that the nodes with large degree have higher retransmission priority in [10]. In this paper, we focus on the improved approach to segment and select sub-packets according to instantaneous reliability for potential throughput performance enhancement. Numeral results with link level simulation demonstrate that a significant throughput gain is realized by setting suitable length of sub-packets for reliability based retransmission than DDB scheme.
Keywords :
automatic repeat request; mobile communication; parity check codes; telecommunication network reliability; degree distribution retransmission strategy; hybrid ARQ schem; irregular LDPC coded subpacket HARQ scheme; reliability-based subpacket transmission; subpacket segmentation; subpacket selection; wireless mobile data transmissions; Automatic repeat request; Reliability;
Conference_Titel :
Communications, Circuits and Systems, 2007. ICCCAS 2007. International Conference on
Conference_Location :
Kokura
Print_ISBN :
978-1-4244-1473-4
DOI :
10.1109/ICCCAS.2007.6247578
