Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105354
Title: A semidefinite relaxation approach for beamforming in cooperative clustered multicell systems with novel limited feedback scheme
Authors: Zhang, Zhiyu
Teh, Kah Chan
Li, Kwok Hung
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2014
Source: Zhang, Z., Teh, K. C., & Li, K. H. (2014). A Semidefinite Relaxation Approach for Beamforming in Cooperative Clustered Multicell Systems With Novel Limited Feedback Scheme. IEEE Transactions on Vehicular Technology, 63(4), 1740-1748.
Series/Report no.: IEEE transactions on vehicular technology
Abstract: In this paper, we consider suboptimal cooperative downlink beamforming strategies to maximize the user sum rate in a clustered multicell system with limited feedback. We decouple the problem into multiple independent subproblems through the uplink-downlink duality theorem. Semidefinite relaxation is applied to transform the original nonconvex problem into a convex semidefinite programming problem, which can be efficiently solved in polynomial time. We propose a novel limited feedback scheme based on a compressive sensing technique that can yield high-quality channel state information (CSI) feedback. We also consider a limited feedback scenario where base stations within one cluster have different estimates of the same CSI knowledge. We investigate the channel quantization criterion by choosing the codeword vector that has the minimum norm of the difference between the codeword and the normalized channel. Numerical results demonstrate the effectiveness of the proposed beamforming algorithm and limited feedback schemes.
URI: https://hdl.handle.net/10356/105354
http://hdl.handle.net/10220/20489
DOI: 10.1109/TVT.2013.2285710
Rights: © 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [http://dx.doi.org/10.1109/TVT.2013.2285710].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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