Home > Publications > Conference Proceedings > On the low SNR capacity of log-normal turbulence channels with full CSI
Publications

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

Bibliography:

F. Benkhelifa,  Z. Rezki,  M. Alouini, On the low SNR capacity of log-normal turbulence channels with full CSI, in Proceedings International Workshop  on Optical Wireless  communication ( IWOW'2014 ), Funchal, Madeira Island, Portugal, 17-19 September 2014.

Authors:

F. Benkhelifa, Z. Rezki, M. Alouini

Keywords:

Channel Capacity, Full CSI, Log-Normal Turbulence, Low SNR, On-Off Signaling

Year:

2014

Abstract:

In this paper, we characterize the low signal-to-noise ratio (SNRcapacity 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.

ISSN:

DOI: 10.1109/IWOW.2014.6950770