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

fYear

2006

fDate

Dec. 2006

Firstpage

29

Lastpage

32

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/PDCAT.2006.10

Filename

4032145