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Coordinated Beamforming for MISO Interference Channel: Complexity Analysis and Efficient Algorithms
Liu, Ya-Feng1; Dai, Yu-Hong1; Luo, Zhi-Quan2
2011-03-01
Source PublicationIEEE TRANSACTIONS ON SIGNAL PROCESSING
ISSN1053-587X
Volume59Issue:3Pages:1142-1157
AbstractIn a cellular wireless system, users located at cell edges often suffer significant out-of-cell interference. Assuming each base station is equipped with multiple antennas, we can model this scenario as a multiple-input single-output (MISO) interference channel. In this paper we consider a coordinated beamforming approach whereby multiple base stations jointly optimize their downlink beamforming vectors in order to simultaneously improve the data rates of a given group of cell edge users. Assuming perfect channel knowledge, we formulate this problem as the maximization of a system utility (which balances user fairness and average user rates), subject to individual power constraints at each base station. We show that, for the single-carrier case and when the number of antennas at each base station is at least two, the optimal coordinated beamforming problem is NP-hard for both the harmonic mean utility and the proportional fairness utility. For general utilities, we propose a cyclic coordinate descent algorithm, which enables each transmitter to update its beamformer locally with limited information exchange and establish its global convergence to a stationary point. We illustrate its effectiveness in computer simulations by using the space matched beamformer as the benchmark.
KeywordComplexity coordinated beamforming cyclic coordinate descent algorithm global convergence MISO interference channel
DOI10.1109/TSP.2010.2092772
Language英语
Funding ProjectNational Natural Science Foundation[10831006] ; CAS[kjcx-yw-s7-03] ; Army Research Office[W911NF-09-1-0279] ; National Science Foundation[0726336]
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000287316500022
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Document Type期刊论文
Identifierhttp://ir.amss.ac.cn/handle/2S8OKBNM/12608
Collection计算数学与科学工程计算研究所
Corresponding AuthorLiu, Ya-Feng
Affiliation1.Chinese Acad Sci, Inst Computat Math & Sci Engn, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China
2.Univ Minnesota, Dept Elect Comp Sci Engn, Minneapolis, MN 55455 USA
Recommended Citation
GB/T 7714
Liu, Ya-Feng,Dai, Yu-Hong,Luo, Zhi-Quan. Coordinated Beamforming for MISO Interference Channel: Complexity Analysis and Efficient Algorithms[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING,2011,59(3):1142-1157.
APA Liu, Ya-Feng,Dai, Yu-Hong,&Luo, Zhi-Quan.(2011).Coordinated Beamforming for MISO Interference Channel: Complexity Analysis and Efficient Algorithms.IEEE TRANSACTIONS ON SIGNAL PROCESSING,59(3),1142-1157.
MLA Liu, Ya-Feng,et al."Coordinated Beamforming for MISO Interference Channel: Complexity Analysis and Efficient Algorithms".IEEE TRANSACTIONS ON SIGNAL PROCESSING 59.3(2011):1142-1157.
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