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SCIENCE CHINA Information Sciences, Volume 60, Issue 2: 022312(2017) https://doi.org/10.1007/s11432-016-0452-x

Upper bounds on the capacity for optical intensity channels with AWGN

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  • ReceivedAug 15, 2016
  • AcceptedSep 17, 2016
  • PublishedDec 16, 2016

Abstract

The channel capacity of the optical wireless communication (OWC) systems is still a problem that has not an optimal and close-form expression, in spite of OWC can be used to achieve high data rates. This paper presents novel upper bounds on the channel capacity of an optical intensity modulated and directed detection (IM/DD) system under peak-power and average-power constraints. The channel is modeled as an additive white Gaussian noise (AWGN) optical channel. The bounds are derived based on sphere-based signal space argument. Simulation results show the proposed bounds are tight at both high and low signal-to-noise ratios (SNRs). Compared to those reported bounds, the derived bounds are better at high SNRs region in particular, and the expressions are simpler and unique for the whole range of average-to-peak-power ratio.


Funded by

"source" : null , "contract" : "2013AA013601"

National Natural Science Foundation of China(61223001)

National Natural Science Foundation of China(61501109)

National High Technology Research and Development Program of China(863)

Jiangsu National Science Foundation(BK20140646)

National Natural Science Foundation of China(61571105)


Acknowledgment

Acknowledgments

This work was supported by National Natural Science Foundation of China (Grant Nos. 61501109, 61571105, 61223001), National High Technology Research and Development Program of China (863) (Grant No. 2013AA013601), and Jiangsu National Science Foundation (Grant No. BK20140646).


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