Multiuser Diversity with Capture in OFDMA systems with clustered feedback

In this paper, we propose a cluster-based feedback protocol for multiuser orthogonal frequency-division multiple-access (OFDMA) systems, where the capture effect is employed in each cluster to reduce the enormous system overhead induced by polling channel-state information. Then, we analyze the syst...

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Bibliographic Details
Published in2012 International Conference on Wireless Communications and Signal Processing (WCSP) pp. 1 - 5
Main Authors Hang Li, Qinghua Guo, Licai Fang, Defeng Huang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2012
Subjects
Capture effect
clustered feedback
multiuser diversity
orthogonal frequency-division multiple-access (OFDMA)
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Summary:In this paper, we propose a cluster-based feedback protocol for multiuser orthogonal frequency-division multiple-access (OFDMA) systems, where the capture effect is employed in each cluster to reduce the enormous system overhead induced by polling channel-state information. Then, we analyze the system throughput performance of the proposed feedback protocol. Compared with the full feedback scheme in the literature, numerical simulations show that the proposed protocol with clustered feedback in OFDMA systems achieves higher system throughput by employing the capture effect with limited feedback overhead, when the number of users is reasonably large. Moreover, compared with our previous protocol of Multiuser Diversity with Capture, the proposed one additionally exploits multiuser diversity in the frequency domain, thereby achieving better throughput performance as shown by the simulation results.
ISBN:9781467358309
1467358304
DOI:10.1109/WCSP.2012.6542946