Performance of vector perturbation multiuser MIMO systems over correlated channels

Adeel Razi, Daniel J. Ryan, Jinhong Yuan, Iain B. Collings

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

3 Citations (Scopus)


This paper considers the performance of the multiuser multi-antenna downlink where NT base station antennas transmit to K non-collocated, single antenna users over correlated channels. A practical and near-capacity multi-user technique called vector perturbation precoding (VPP) is considered. For these scenarios, we derive a lower bound to the average energy of the precoded vector. We use this to approximate the effective noise gain at the receivers due to the presence of transmit side correlation. Furthermore, we obtain simple approximations for the noise gain for constant and exponential transmit correlation models. Simulation results show that our approximations predict the performance loss due to correlation remarkably well regardless of the correlation parameter.

Original languageEnglish
Title of host publication2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings
Publication statusPublished - 2010
Externally publishedYes
EventIEEE Wireless Communications and Networking Conference 2010 - Sydney Convention and Exhibition Centre, Sydney, Australia
Duration: 18 Apr 201021 Apr 2010 (Proceedings)


ConferenceIEEE Wireless Communications and Networking Conference 2010
Abbreviated titleWCNC 2010
Internet address

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