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Opportunistic Transmission with Partial Channel Information in Multi-user OFDM Wireless Systems

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Authors
Ko, Jae-Yun; Lee, Yong-Hwan
Issue Date
2007-03
Publisher
Institute of Electrical and Electronics Engineers
Citation
WCNC 2007. IEEE Wireless Communications and Networking Conference, 2007
Keywords
OpportunisticPartial Channel informationMulti-UserOFDM
Abstract
In this paper, we consider opportunistic packet
scheduling with the use of reduced channel information in multiuser
OFDM wireless systems. The amount of channel information
can be reduced by exploiting the correlation characteristics in the
frequency domain. For a given amount of feedback information,
the subcarriers are selected to maximize the system capacity. A
simplified algorithm is proposed for the selection of subcarriers,
making the proposed scheme realizable. Simulation results show
that the proposed scheme provides significant performance
improvement over conventional schemes especially when the
channel is highly correlated in the frequency domain and/or the
amount of allowable feedback information is small.
Language
English
URI
http://www.ieee-wcnc.org/2007

http://hdl.handle.net/10371/7114
DOI
https://doi.org/10.1109/WCNC.2007.249
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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