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QoSConstrained Robust Beamforming Design for MIMO Interference Channels with Bounded CSI Errors
Conggai LI Xuan GENG Feng LIU
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E102A
No.10
pp.14261430 Publication Date: 2019/10/01 Online ISSN: 17451337
DOI: 10.1587/transfun.E102.A.1426 Type of Manuscript: LETTER Category: Communication Theory and Signals Keyword: MIMO interference channel, QoS constraints, bounded CSI error, robust transceiver design,
Full Text: FreePDF(345.2KB)
Summary:
Constrained by qualityofservice (QoS), a robust transceiver design is proposed for multipleinput multipleoutput (MIMO) interference channels with imperfect channel state information (CSI) under bounded error model. The QoS measurement is represented as the signaltointerferenceplusnoise ratio (SINR) for each user with single data stream. The problem is formulated as sum power minimization to reduce the total power consumption for energy efficiency. In a centralized manner, alternating optimization is performed at each node. For fixed transmitters, closedform expression for the receive beamforming vectors is deduced. And for fixed receivers, the sumpower minimization problem is recast as a semidefinite program form with linear matrix inequalities constraints. Simulation results demonstrate the convergence and robustness of the proposed algorithm, which is important for practical applications in future wireless networks.

