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 contribution


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 (US)
Title of host publication2014 3rd International Workshop in Optical Wireless Communications (IWOW)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781479966769
StatePublished - Sep 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01


Dive into the research topics of 'On the low SNR capacity of log-normal turbulence channels with full CSI'. Together they form a unique fingerprint.

Cite this