Adaptive real-time software defined MIMO visible light communications using spatial multiplexing and spatial diversity

Peng Deng, Mohsen Kavehrad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this paper, we experimentally demonstrate a real-time software defined multiple input multiple output (MIMO) visible light communication (VLC) system employing link adaptation of spatial multiplexing and spatial diversity. Real-time MIMO signal processing is implemented by using the Field Programmable Gate Array (FPGA) based Universal Software Radio Peripheral (USRP) devices. Software defined implantation of MIMO VLC can assist in enabling an adaptive and reconfigurable communication system without hardware changes. We measured the error vector magnitude (EVM), bit error rate (BER) and spectral efficiency performance for single-carrier M-QAM MIMO VLC using spatial diversity and spatial multiplexing. Results show that spatial diversity MIMO VLC improves error performance at the cost of spectral efficiency that spatial multiplexing should enhance. We propose the adaptive MIMO solution that both modulation schema and MIMO schema are dynamically adapted to the changing channel conditions for enhancing the error performance and spectral efficiency. The average error-free spectral efficiency of adaptive 2×2 MIMO VLC achieved 12 b/s/Hz over 2 meters indoor dynamic transmission.

Original languageEnglish (US)
Title of host publicationProceedings - WiSEE 2016
Subtitle of host publication2016 IEEE International Conference on Wireless for Space and Extreme Environments
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages111-116
Number of pages6
ISBN (Electronic)9781509026098
DOIs
StatePublished - Jan 1 2016
Event2016 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2016 - Aachen, Germany
Duration: Sep 26 2016Sep 28 2016

Publication series

NameProceedings - WiSEE 2016: 2016 IEEE International Conference on Wireless for Space and Extreme Environments

Other

Other2016 IEEE International Conference on Wireless for Space and Extreme Environments, WiSEE 2016
CountryGermany
CityAachen
Period9/26/169/28/16

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Computer Networks and Communications
  • Aerospace Engineering
  • Instrumentation

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