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Zero-forcing beamforming with receiver antenna selection in downlink multi-antenna multi-user system

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3 Author(s)
Senhua, Huang ; PCN & SS Lab, Univ. of Science and Technology of China, Hefei 230027, P. R. China ; Ling, Qiu ; Lin, Shi

A study on the zero-forcing beamforming (ZFBF) scheme with antenna selection at user terminals in downlink multi-antenna multi-user systems is presented. Simulation results show that the proposed ZFBF scheme with receiver antenna selection (ZFBF-AS) achieves considerable throughput improvement over the ZFBF scheme with single receiver antenna. The results also show that, with multi-user diversity, the ZFBF-AS scheme approaches the throughput performance of the ZFBF scheme using all receiver antennas (ZFBF-WO-AS) when the base station adopts semi-orthogonal user selection (SUS) algorithm, and achieves larger throughput when the base station adopts the Round-robin scheduling algorithm. Compared with ZFBF-WO-AS, the proposed ZFBF-AS scheme can reduce the cost of user equipments and the channel state information requirement at the transmitter (CSIT) as well as the multiuser scheduling complexity at the transmitter.

Published in:

Systems Engineering and Electronics, Journal of  (Volume:19 ,  Issue: 6 )