Optimal Power Allocation for Poisson Channels with Time-Varying Background Light

[No Value] Ain-Ul-Zaisha, Lifeng Lai, Yingbin Liang

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

In this paper, we study Poisson fading channels with time-varying background light. Different from most of the existing work on fading Poisson channel that focus on the case with time-varying channel gain, our model is motivated by indoor optical wireless communication systems, in which the noise level is affected by the strength of the background light. We study both the single-input single-output and the multiple-input and multiple-output channels. For each channel, we consider scenarios with and without delay constraints. For the case without a delay constraint, we characterize the optimal power allocation scheme that maximizes the ergodic capacity. For the case with a strict delay constraint, we characterize the optimal power allocation scheme that minimizes the outage probability. We also provide several numerical examples to demonstrate the analytic results.

Original languageEnglish (US)
Article number7265012
Pages (from-to)4327-4338
Number of pages12
JournalIEEE Transactions on Communications
Volume63
Issue number11
DOIs
StatePublished - Nov 1 2015

Keywords

  • Ergodic capacity
  • Outage probability
  • Poisson channels
  • Time-varying background light

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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