Performance improvement of the pre-coded multi-user MIMO indoor visible light communication system

Yang Hong, Jian Chen, Changyuan Yu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

15 Citations (Scopus)

Abstract

Visible light communication has aroused many research interests in recent years. Given the limited modulation bandwidth of LED, multiple input and multiple output (MIMO) technology appears attractive in VLC systems as multiple LED sources are typically employed in indoor environment to supply sufficient illuminance. For a practical indoor system, there generally exist multiple decentralized user terminals, which composed a multi-user (MU) MIMO VLC system together with multiple LED sources. The main difficulty for the MU-MIMO indoor VLC system is the separation of received data for different user terminal, i.e., multi-user interference (MUI). We have recently proposed an asymmetric system configuration to eliminate MUI in indoor VLC systems. By pre-processing the transmitted data in transmitter, the complexity of user terminals belonging to the proposed system is significantly reduced, leading to the reduction of power consumption. In this paper, a novel multidirectional optical receiver with different field of view (FOV) is proposed to improve the performance of the proposed system. Simulation results show that BER and SNR performances of the system are significantly improved and the majority of indoor region can achieve 100 Mbit/s at a BER of 10-6 when single LED chip's power is ∼10 mW.
Original languageEnglish
Title of host publication2014 9th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2014
PublisherIEEE
Pages314-318
Number of pages5
ISBN (Electronic)9781479925810
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event2014 9th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2014 - Manchester, United Kingdom
Duration: 23 Jul 201425 Jul 2014

Conference

Conference2014 9th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2014
CountryUnited Kingdom
CityManchester
Period23/07/1425/07/14

Keywords

  • Field of View
  • Multi-user MIMO
  • Multidirectional receiver
  • Precoding
  • Visible Light Communications

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

Cite this