DocumentCode
2769131
Title
Opportunistic dynamic subchannel allocation in multiuser OFDM networks with limited feedback
Author
Sanayei, Shahab ; Nosratinia, Aria ; Aldhahir, Nuofal
Author_Institution
Dept. of Electr. Eng., Texas Univ., Richardson, TX, USA
fYear
2004
fDate
24-29 Oct. 2004
Firstpage
182
Lastpage
186
Abstract
In this paper we present a simple scheme for subchannel allocation in OFDM multiuser networks in the presence of limited feedback, in particular, when only one bit of information per subchannel is available at the base station. Our objective is to maximize the sum rate capacity of the network in the downlink transmission. We show that even with very limited feedback the sum rate capacity growth is the same as the fully informed transmission. We also extend this result to the case when subchannels are correlated.
Keywords
4G mobile communication; OFDM modulation; channel allocation; channel capacity; correlation theory; feedback; multiuser channels; optimisation; correlated subchannels; downlink transmission; limited feedback; multiuser OFDM networks; next generation wireless systems; opportunistic dynamic subchannel allocation; sum rate capacity maximization; Base stations; Broadband communication; Delay; Diversity methods; Downlink; Fading; Feedback; Intelligent networks; OFDM; Quality of service;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory Workshop, 2004. IEEE
Print_ISBN
0-7803-8720-1
Type
conf
DOI
10.1109/ITW.2004.1405296
Filename
1405296
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