DocumentCode
3438548
Title
Strategies to Improve the Utilization Ratio of CQI Channels in IEEE 802.16 Systems
Author
Lilei Wang ; Xiaoyi Wang ; Huimin Xu
Author_Institution
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing
fYear
2008
fDate
12-14 Oct. 2008
Firstpage
1
Lastpage
4
Abstract
IEEE 802.16 systems adopt a "semi-dynamic" allocation mechanism of channel quality indicator (CQI) channels. However, low utilization ratio of CQI channels reduces the spectrum efficiency. So we propose three adjusting strategies based on a "toy brick model" to improve the utilization ratio of CQI channels. The simulation results manifest the improvement. In addition, we analyze the tradeoff between the increase of utilization ratio and the increase of signaling overhead.
Keywords
WiMax; channel allocation; wireless channels; CQI channels; IEEE 802.16 systems; adjusting strategy; channel allocation; channel quality indicator; toy brick model; utilization ratio; Algorithm design and analysis; Base stations; Channel allocation; Channel estimation; Communication standards; Data communication; Feedback; Mobile communication; Modulation coding; Signal analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location
Dalian
Print_ISBN
978-1-4244-2107-7
Electronic_ISBN
978-1-4244-2108-4
Type
conf
DOI
10.1109/WiCom.2008.739
Filename
4678647
Link To Document