NDLI: Capacity of the MIMO optical fading channel

Content Provider	IEEE Xplore Digital Library
Author	Chakraborty, K.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD (Chakraborty, K.)
Abstract	We determine the capacity of a shot-noise limited direct detection multiple-input multiple-output (MIMO) optical channel subject to block fading. Information is sent over this channel by modulating the intensity of a number of optical signals, one corresponding to each transmit aperture, and individual photon arrivals are observed at each receive aperture for the purpose of detection. The transmitted signals are subject to peak and average power constraints. The fading occurs in blocks of fixed duration during each of which the path gain matrix remains constant, and changes across successive blocks in an independent and identically distributed fashion. We obtain a single-letter characterization of the capacity of this channel when the receiver is provided with perfect channel state information (CSI) while the transmitter CSI can be imperfect. We demonstrate that a binary signaling scheme with arbitrarily fast intertransition times through each of the transmit apertures achieves channel capacity. Some interesting properties of the optimum transmission strategies are discussed
Starting Page	530
Ending Page	534
File Size	167880
Page Count	5
File Format	PDF
ISBN	0780391519
DOI	10.1109/ISIT.2005.1523391
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-09-04
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Fading Optical modulation Optical transmitters Optical receivers Apertures Channel capacity Intensity modulation Signal detection Channel state information
Content Type	Text
Resource Type	Article

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