NDLI: Linearized Robust Beamforming for Two-Way Relay Systems

Content Provider	IEEE Xplore Digital Library
Author	Aziz, A. Thron, C. Shuguang Cui Georghiades, C.
Copyright Year	1994
Abstract	In beamforming, channel state information (CSI) is used to design the beamforming vector (or matrix). Since in a practical system the CSI always needs to be estimated, channel estimation (CE) errors are inevitable, which could severely affect the performance of a beamforming scheme. In this paper, we present a novel beamforming method for two-way relay (TWR) systems that is robust against CE errors. The proposed method obtains a sub-optimal solution for the associated non-convex robust optimization problem by solving a set of closed-form linear equations. Simulations show a considerable performance gain over the rank-one relaxation-based semidefinite programming (SDP) solutions, especially for the cases where the relaxed problem becomes infeasible. In addition, there is significant reduction in complexity, making this method very attractive for practical implementation.
Sponsorship	IEEE Signal Processing Society
Starting Page	1017
Ending Page	1021
Page Count	5
File Size	1409537
File Format	PDF
ISSN	10709908
Volume Number	21
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Robustness Relays Optimization Interference Signal to noise ratio Antennas two-way relay Linearization perturbation robust beamforming
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Signal Processing Electrical and Electronic Engineering

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