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Erschienen in: Wireless Personal Communications 4/2017

17.08.2017

Channel Correlation Based Zero-Forcing Beamforming in Two-User MISO Broadcast Channel

verfasst von: Jing Xu, Pinyi Ren

Erschienen in: Wireless Personal Communications | Ausgabe 4/2017

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Abstract

In this paper, a novel zero-forcing beamforming (ZFBF) is presented for the two-user multiple input single output broadcast channel. Based on the knowledge of channel correlations at the transmitter side, a nonlinear optimization problem is formulated to determine the beamformers so that the weighted ergodic sum-rate is maximized subject to avoiding multi-user interference and meeting a total power constraint. By factorizing each beamformer, the original complicated problem can be transformed into a simpler one. Numerical results show that the performance gap between the proposed ZFBF and the traditional instantaneous channel state information based ZFBF is within 1.5 bits per transmission.

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Metadaten
Titel
Channel Correlation Based Zero-Forcing Beamforming in Two-User MISO Broadcast Channel
verfasst von
Jing Xu
Pinyi Ren
Publikationsdatum
17.08.2017
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2017
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-017-4813-z

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