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Conference Papers Year : 2014

Sum capacity maximization in distributed multicell MISO-OFDMA systems with reduced feedback links

Abstract

In this paper, we examine distributed resource allocation (RA) for sum capacity maximization in multi-input single-output (MISO)-Orthogonal Frequency-Division Multiple Access (OFDMA) multicell systems with reduced feedback links. We apply zero forcing (ZF) precoding to reduce interference among the users in the same cell and then propose iterative distributed power allocation algorithms for the users with high signal-to-interference-plus-noise ratio (SINR) to reduce the interference among BSs. In order to perform distributed RA for MISO-OFDMA multicell systems, the channel state information (CSI) of all required links are fed back to all base stations. However, the feedback load increases with the number of users, base stations, subcarriers and antennas. Therefore, we propose to a user selection algorithm at the receiver side to reduce the feedback load and to provide the users with high SINR at BSs. The performance results of the proposed algorithms are illustrated for multicell MISO-OFDMA systems in wireless channels.
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Dates and versions

hal-01126427 , version 1 (06-03-2015)

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  • HAL Id : hal-01126427 , version 1

Cite

Berna Ozbek, Didier Le Ruyet, Mylène Pischella. Sum capacity maximization in distributed multicell MISO-OFDMA systems with reduced feedback links. International Symposium on Wireless Communication Systems (ISWCS 2014), Aug 2014, Barcelona, Spain. ⟨hal-01126427⟩
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