An Efficient Algorithm for Zero-Forcing Coordinated Beamforming

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The problem of beam tracking for zero-forcing coordinated beamforming in multiple-cell time-varying multiple-input multiple-output channels is considered. Based on null-space perturbation theory, an efficient update algorithm for block-diagonalization-based zero-forcing coordinated beam design is proposed and its performance is analyzed. In slowly-varying channels, the proposed algorithm well tracks the zero-forcing beam solution and significantly reduces computational complexity by simply updating beamforming matrices instead of redesigning them with new channel state information at each time step.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-07
Language
English
Article Type
Article
Keywords

CHANNELS; MIMO

Citation

IEEE COMMUNICATIONS LETTERS, v.16, no.7, pp.994 - 997

ISSN
1089-7798
DOI
10.1109/LCOMM.2012.050412.112565
URI
http://hdl.handle.net/10203/101802
Appears in Collection
EE-Journal Papers(저널논문)
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