Title :
A Link Adaptation Solution to IEEE 802.16d WMAN
Author :
Nai´an Liu ; Sun, Dechun ; Li, Wuqiang ; Pei, Changxing
Author_Institution :
State Key Lab. of Integrated Service Networks, Xidian Univ., Xi´´an
Abstract :
IEEE 802.16d adopts HARQ (hybrid automatic retransmission request) and AMC (automatic modulation and coding) as link adaptive mechanism. This paper proposes a link adaptive solution based on a simple but effective sliding window mechanism. Also a signal constellation rearrangement strategy is present to average out reliabilities of bits carried by repeatedly transmitted symbols over retransmissions in order that the receiver can gain better performance using Chase combining
Keywords :
WiMax; estimation theory; interference; modulation coding; Chase combining; IEEE 802.16d WMAN; automatic modulation and coding; carrier-to-interference plus noise ratio estimation; hybrid automatic retransmission request; link adaptation; signal constellation rearrangement; sliding window mechanism; Adaptive control; Algorithm design and analysis; Automatic repeat request; Intserv networks; Laboratories; Maximum likelihood estimation; Modulation coding; OFDM; Sun; Throughput; CINR estimation; HARQ; IEEE 802.16d; link adaptation; sliding window;
Conference_Titel :
Parallel and Distributed Computing, Applications and Technologies, 2006. PDCAT '06. Seventh International Conference on
Conference_Location :
Taipei
Print_ISBN :
0-7695-2736-1
DOI :
10.1109/PDCAT.2006.10
