DocumentCode
485453
Title
Improvement of CQI feedback schemes based on OFDMA system
Author
Dongdong Zhao ; Weixiao Zhu ; Xiong Yong ; Zhuo Wu ; Huimin Cheng
Author_Institution
Sch. of Commun. Eng., Shanghai Univ., Shanghai
fYear
2007
fDate
12-14 Dec. 2007
Firstpage
1025
Lastpage
1028
Abstract
In this paper, a new feedback scheme is presented based on the comparison of several CQI feedback schemes for OFDMA systems. The number of feedback level is decreased. And the number of feedback RBs (Resource Blocks) is increased in each level, in order to enrich the feedback information of the radio channel. Simulation results show that the new scheme enhances the description precision of the radio channel and is quite flexibile when used under different channel conditions, with hardly no more bit cost compared to some current schemes.
Keywords
3G mobile communication; frequency division multiple access; wireless channels; 3GPP; CQI feedback schemes; OFDMA system; radio channel; resource blocks feedback; CQI; OFDMA; feedback scheme;
fLanguage
English
Publisher
iet
Conference_Titel
Wireless, Mobile and Sensor Networks, 2007. (CCWMSN07). IET Conference on
Conference_Location
Shanghai
ISSN
0537-9989
Print_ISBN
978-0-86341-836-5
Type
conf
Filename
4786380
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