MIMO Optical Intensity Channels with Peak Intensity Constraints: Low-SNR Capacity
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Online Publication Date2018-08-17
Print Publication Date2018-06
Permanent link to this recordhttp://hdl.handle.net/10754/630507
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AbstractThe capacity of the intensity-modulation direct-detection (IM-DD) multiple-input multiple-output channel is studied under average and peak intensity constraints. We focus on the low signal-to-noise ratio (SNR) regime where the constraints proportionally vanish, or alternatively, where the noise power is large. A general upper bound on the capacity of this channel is derived. Then, this bound is shown to be tight at low SNR, where it coincides with the achievable rate of (i) on-off keying (OOK), spatial repetition coding, and maximum-ratio combining under individual average constraint and (ii) OOK with maximally-correlated inputs under a sum average constraint. This leads to a low-SNR capacity characterization of the channel.
CitationChaaban A, Rezki Z, Alouini M-S (2018) MIMO Optical Intensity Channels with Peak Intensity Constraints: Low-SNR Capacity. 2018 IEEE International Symposium on Information Theory (ISIT). Available: http://dx.doi.org/10.1109/isit.2018.8437674.
SponsorsHis work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC).His work is supported in part by the Qatar National Research Fund (a member of Qatar Foundation) under Grant NPRP 9-077-2-036. The statements made herein are solely the responsibility of the authors.
Conference/Event name2018 IEEE International Symposium on Information Theory, ISIT 2018