On the Optimality of Beamforming for Multi-User MISO Interference Channels with Single-User Detection

For a multi-user interference channel with multi-antenna transmitters and single-antenna receivers, by restricting each receiver to a single-user detector, computing the largest achievable rate region amounts to solving a family of nonconvex optimization problems. Recognizing the intrinsic connectio...

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Bibliographic Details
Published inGLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference pp. 1 - 5
Main Authors Xiaohu Shang, Biao Chen, Poor, H.V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2009
Subjects
Array signal processing
Decoding
Gaussian noise
Integrated circuit modeling
Integrated circuit noise
Interference channels
Power engineering computing
Symmetric matrices
Time sharing computer systems
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Summary:For a multi-user interference channel with multi-antenna transmitters and single-antenna receivers, by restricting each receiver to a single-user detector, computing the largest achievable rate region amounts to solving a family of nonconvex optimization problems. Recognizing the intrinsic connection between the signal power at the intended receiver and the interference power at the unintended receiver, the original family of non-convex optimization problems is converted into a new family of convex optimization problems. It is shown that, for such interference channels with each receiver implementing single-user detection, transmitter beamforming can achieve all boundary points of the achievable rate region.
ISBN:9781424441488
142444148X
ISSN:1930-529X
2576-764X
DOI:10.1109/GLOCOM.2009.5426006