MMSE based spatial dimming scheme for multiuser MISO VLC systems

Zhen Feng*, Caili Guo, Yang Yang, Zabih Ghassemlooy, Chunyan Feng

*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

The multi-user multiple-input single-output (MU-MISO) visible light communications (VLC) system have been widely studied in recent years. Operating VLC under different illumination levels is desirable and therefore the need for dimming control mechanism. In this paper, we proposed a novel minimum-mean-squared error based spatial dimming (SD-MMSE) scheme for MU- MISO VLC systems. By taking full advantage of the channel state information (CSI) between the transmitter and the users, we adopted transmit antenna selection (TAS) technique and effectively combined it with MMSE precoding. Dimming control is thus achieved by selecting the optimum light emitting diodes (LEDs) subset. Simulation results show that the proposed SD- MMSE scheme could achieve improved bit-error-rate (BER) performance compared with traditional dimming schemes. These advantages make the proposed scheme a promising candidate that could be applied in MU-MISO VLC systems.

Original languageEnglish
Title of host publication2017 IEEE Globecom Workshops, GC Wkshps 2017 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538639207
DOIs
Publication statusPublished - 24 Jan 2018
Event2017 IEEE Global Telecommunications Conference, GC 2017 - Singapore, Singapore
Duration: 4 Dec 20178 Dec 2017

Publication series

Name2017 IEEE Globecom Workshops, GC Wkshps 2017 - Proceedings
Volume2018-January

Conference

Conference2017 IEEE Global Telecommunications Conference, GC 2017
CountrySingapore
CitySingapore
Period4/12/178/12/17

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