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| Distributed Beamforming Schemes Based on QR Decomposition and SIC Detection for MIMO Relay Networks |
| HUANG Zi-Li, JIANG Ling-Ge, HE Chen |
| (School of Electronic， Information and Electrical Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract This paper is concerned with a two hop half-duplex wireless communication network with multiple antennas and multiple relays. Based on amplifyandforward (AF) protocol, two new distributed beamforming schemes named IRZF-MF and RZF were proposed for this system. The RZF scheme uses RZF technique for both receive and transmit beamforming while the IRZF-MF scheme uses IRZF and MF technique for receive and transmit beamforming respectively. The simulation results show that the proposed two relay schemes achieve the same performance of existing MF-RZF scheme in the Rayleigh channel, meanwhile, the proposed RZF scheme achieves the best performance which requires a higher computational complexity and the proposed IRZFMF scheme achieves the second best performance while requires less computational complexity than RZF scheme in the Rician channel compared with other existing distributed relaying schemes.
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Received: 12 November 2011
Published: 30 November 2012
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