MIMO Optical Intensity Channels with Peak Intensity Constraints: Low-SNR Capacity
Type
Conference PaperKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering Program
Date
2018-08-17Online Publication Date
2018-08-17Print Publication Date
2018-06Permanent link to this record
http://hdl.handle.net/10754/630507
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Show full item recordAbstract
The 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.Citation
Chaaban 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.Sponsors
His 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 name
2018 IEEE International Symposium on Information Theory, ISIT 2018Additional Links
https://ieeexplore.ieee.org/document/8437674ae974a485f413a2113503eed53cd6c53
10.1109/isit.2018.8437674