Opportunistic feedback with adaptive modulation over multiuser diversity systems

In this paper, we propose an opportunistic feedback protocol with adaptive modulation. The proposed feedback protocol is divided into two stages. During first stage, the proposed scheme uses feedback collision information in order to find the signal-to-noise ratio region where the user with the best...

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Bibliographic Details
Published in13th International Conference on Advanced Communication Technology (ICACT2011) pp. 443 - 446
Main Authors Chung-Woon Park, Taejoon Kim, Jae-Han Jeon, Young-Jun Cho, Jong-Tae Lim
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.02.2011
Subjects
Adaptation model
Adaptive systems
Fading
fading channel
Modulation
multiuser diversity
Opportunistic feedback
Protocols
random access
scheduling outage
Signal to noise ratio
Wireless communication
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Summary:In this paper, we propose an opportunistic feedback protocol with adaptive modulation. The proposed feedback protocol is divided into two stages. During first stage, the proposed scheme uses feedback collision information in order to find the signal-to-noise ratio region where the user with the best channel quality belongs to. In second stage, based on random access protocol, the users in that signal-to-noise ratio region compete to send a feedback message. We analyze and evaluate the proposed feedback protocol in terms of the average transmission capacity and the outage probability. Simulation results show that the proposed scheme lowers the outage probability. Thus, it achieves the high average transmission capacity with limited feedback information.
ISBN:1424488303
9781424488308
ISSN:1738-9445