Linear beamformer schemes with simple relay selection in MIMO relay networks

Acta Metallurgica Sinica(English letters) ›› 2008, Vol. 15 ›› Issue (4): 24-29.doi:

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Linear beamformer schemes with simple relay selection in MIMO relay networks

MENG Qing-min, PAN Su, ZHENG Bao-yu, ZHU Hong-bo, YOU Xiao-hu

Jiangsu Key Laboratory of Wireless Communications and Institute of Signal Processing and Transmission,
Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Received:2008-06-01 Revised:1900-01-01 Online:2008-12-30
Contact: MENG Qing-min

Abstract

Abstract:

This article considers a wireless multi-hop/mesh network where single multi-antenna source-destination pair communicates through a selected relay subset using simple relay selection under the constraint of fixed relay’s number. Compared with random selection, the simple relay selection can yield certain capacity advantages while linear zero-forcing (ZF) receiver and linear beamformer are considered at the relay. For match-filter (MF) beamformer and amplified-and-forward (AF) beamformer with a fixed number of relays, the capacities are given. Furthermore, we extend the simple selection methods to the relaying scheme with orthogonal-triangular (QR) beamformer and investigate these linear beamformer schemes over spatially correlated multi-input multi-output (MIMO) links for both the backward and forward channel over the two-hop MIMO relay networks.

Key words:

wireless mesh networks;multi-hop relaying;capacity;beamformer

MENG Qing-min, PAN Su, ZHENG Bao-yu, ZHU Hong-bo, YOU Xiao-hu. Linear beamformer schemes with simple relay selection in MIMO relay networks[J]. Acta Metallurgica Sinica(English letters), 2008, 15(4): 24-29.

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Linear beamformer schemes with simple relay selection in MIMO relay networks

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