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English (United Kingdom)

A Cooperative Antenna Selection Algorithm for MIMO-OFDMA Networks

Year: 2014
Type of Publication: In Proceedings Keywords: MIMO-OFDMA; Antenna selection
Book title: Proceedings of the 8th European Conference on Antennas and Propagation (EuCap 2014)
In this paper, the performance of a proposed antenna selection (AS) scheme for Multiple Input Multiple Output (MIMO) networks is evaluated, where the Orthogonal Frequency Division Multiple Access (OFDMA) physical layer protocol is employed. The proposed AS algorithm is based on the maximization of the ratio of desired user’s signal power to the interference power caused to the network. Performance metrics are derived, such as the mean number of active mobile stations (MSs) for various modulation types and services, after a sufficient number of Monte Carlo (MC) simulations. As results indicate, our proposed AS approach can provide significant throughput gain especially in cases of high data rates per active MS. In particular, for three allocated subcarriers per MS, 16-QAM modulation type and 10% blocking probability, this strategy provides 33% gain on the mean number of active MSs compared to the case where interference is neglected during antenna selection.