MSE_MIMO_Relay_submitted_publication.pdf (149.77 kB)
Download fileMMSE-based beamforming techniques for relay broadcast channels
journal contribution
posted on 2017-02-02, 11:36 authored by Kanapathippillai Cumanan, Yogachandran RahulamathavanYogachandran Rahulamathavan, Sangarapillai LambotharanSangarapillai Lambotharan, Zhiguo D. DingWe propose minimum mean square error (MMSE)-based beamforming techniques for a multiantenna relay network, where a base station (BS) equipped with multiple antennas communicates with a number of single-antenna users through a multiantenna relay. We specifically solve three optimization problems, namely, 1) the sum-power minimization problem, 2) the mean-square-error (MSE) balancing problem, and 3) the mixed quality-of-service (QoS) problem. Unfortunately, these problems are not jointly convex in terms of beamforming vectors at the BS and the relay amplification matrix. To circumvent this nonconvexity issue, the original problems are divided into two subproblems, where the beamforming vectors and the relay amplification matrix are alternately optimized, whereas the other is fixed. Three iterative algorithms are developed based on convex optimization techniques and general MSE duality. Simulation results are provided to validate the convergence of the proposed algorithms.
Funding
This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) of the U.K. under Grant EPSRC G020442 and Grant EP/I037423/1.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Transactions on Vehicular TechnologyVolume
62Issue
8Pages
4045 - 4051Citation
CUMANAN, K. ... et al, 2013. MMSE-based beamforming techniques for relay broadcast channels. IEEE Transactions on Vehicular Technology, 62 (8), pp. 4045-4051.Publisher
© IEEEVersion
- AM (Accepted Manuscript)
Publication date
2013Notes
© 2013 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.ISSN
0018-9545Publisher version
Language
- en