Abstract
A low complexity antenna selection scheme for multicarrier MIMO (Multiple Input Multiple Output) broadcast systems is proposed in this paper. Under special condition of single user in the system or when the number of subcarrier is only one, the system reduces to conventional MIMO-OFDM (Orthogonal Frequency Division Multiplexing) system or MIMO-BC (Broadcast Channel) system respectively. By analysing sub-optimal antenna selection schemes developed earlier for single user MIMO-OFDM systems and single carrier MIMO-BC systems, one can see many similarities which can be extended to multicarrier MIMO broadcast systems. The proposed method exploits these similarities to obtain a low complexity system design with acceptable performance. The performance of the proposed scheme is studied via extensive simulation, and the computational complexity involved is compared to the conventional scheme. A selection gain of approximately 0.5 b/s/Hz is shown to be achievable using only two out of three antennas, and the proposed scheme is able to achieve up to 90% of the gain. This is achieved at a complexity that is significantly lower than the conventional methods, hence the practical implementation of the proposed scheme can be justified.







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The authors would like to thank the reviewers and the editors for their helpful comments, which have significantly improved the presentation of this paper.
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Kurniawan, E., Madhukumar, A.S. & Chin, F. Low Complexity Antenna Selection Scheme for Multicarrier MIMO Broadcast Communication. J Sign Process Syst 62, 247–262 (2011). https://doi.org/10.1007/s11265-009-0347-2
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DOI: https://doi.org/10.1007/s11265-009-0347-2