On the low SNR capacity of log-normal turbulence channels with full CSI

Fatma Benkhelifa, Abdoulaye Tall, Zouheir Rezki, Mohamed-Slim Alouini

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

Abstract

In this paper, we characterize the low signal-to-noise ratio (SNR) capacity of wireless links undergoing the log-normal turbulence when the channel state information (CSI) is perfectly known at both the transmitter and the receiver. We derive a closed form asymptotic expression of the capacity and we show that it scales essentially as λ SNR where λ is the water-filling level satisfying the power constraint. An asymptotically closed-form expression of λ is also provided. Using this framework, we also propose an on-off power control scheme which is capacity-achieving in the low SNR regime.
Original languageEnglish
Title of host publication3rd International Workshop in Optical Wireless Communications (IWOW)
PublisherIEEE
Pages25-29
Number of pages5
ISBN (Electronic)978-1-4799-6676-9
DOIs
Publication statusPublished - 10 Nov 2014
Externally publishedYes
Event3rd International Workshop in Optical Wireless Communications (IWOW) - Funchal, Portugal
Duration: 17 Sept 201417 Sept 2014

Conference

Conference3rd International Workshop in Optical Wireless Communications (IWOW)
Country/TerritoryPortugal
CityFunchal
Period17/09/1417/09/14

Keywords

  • Signal to noise ratio
  • Integrated optics
  • Tin
  • Reactive power

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