Space Division Multiple Access for Optical Attocell Network Using Angle Diversity Transmitters

Zhe Chen, Dushyantha A. Basnayaka, Harald Haas

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, an optical space division multiple access (SDMA) scheme is proposed for optical attocell networks. In the system, the conventional single-element transmitter in each optical cell is substituted by an angle diversity transmitter which can simultaneously serve multiple active users at different positions. The type of configuration can increase the available bandwidth resource and also mitigate intercell interference in optical attocell networks. The results show that an optical SDMA scheme significantly outperforms the conventional optical time division multiple access scheme. The SDMA scheme improves the average spectral efficiency of the system by a factor of 26 for a 37-element light emitting diode angle diversity transmitter. In addition, the upper and lower bound of the optical SDMA performance are derived analytically. These bounds can precisely estimate the performance of SDMA systems. Also, the study is extended to take account of user position errors, and Monte-Carlo simulations show that the system is very robust to user position errors.

Original languageEnglish
Article number7857700
Pages (from-to)2118-2131
Number of pages14
JournalJournal of Lightwave Technology
Volume35
Issue number11
Early online date15 Feb 2017
DOIs
Publication statusPublished - 1 Jun 2017

Keywords

  • Angle diversity transmitter
  • position errors
  • space division multiple access
  • visible light communication

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