TY - JOUR

T1 - Free-Space Optical Communications with Detector Arrays

T2 - A Mathematical Analysis

AU - Bashir, Muhammad Salman

N1 - Publisher Copyright:
© 1965-2011 IEEE.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Photon counting detector arrays are commonly used for free-space optical communications in deep space. Such detector arrays - by virtue of their size - help in the collection of the optical signal even when there is some misalignment between the transmitter and receiver systems. In this paper, we argue that, for the common Gaussian beam profile, a detector array receiver is more useful for minimizing the probability of error than a single detector receiver of the same dimensions. Furthermore, the improvement in the error probability is more pronounced for low signal-to-noise ratio conditions, and the probability of error decreases monotonically as a function of the number of detectors in the array. However, communication with detector arrays results in a larger computational and hardware complexity at the receiver.

AB - Photon counting detector arrays are commonly used for free-space optical communications in deep space. Such detector arrays - by virtue of their size - help in the collection of the optical signal even when there is some misalignment between the transmitter and receiver systems. In this paper, we argue that, for the common Gaussian beam profile, a detector array receiver is more useful for minimizing the probability of error than a single detector receiver of the same dimensions. Furthermore, the improvement in the error probability is more pronounced for low signal-to-noise ratio conditions, and the probability of error decreases monotonically as a function of the number of detectors in the array. However, communication with detector arrays results in a larger computational and hardware complexity at the receiver.

KW - Error probability

KW - free-space optical communications

KW - Gaussian beam

KW - photon counting detector arrays.

UR - http://www.scopus.com/inward/record.url?scp=85083457953&partnerID=8YFLogxK

U2 - 10.1109/TAES.2019.2944574

DO - 10.1109/TAES.2019.2944574

M3 - Article

AN - SCOPUS:85083457953

VL - 56

SP - 1420

EP - 1429

JO - IEEE Transactions on Aerospace and Electronic Systems

JF - IEEE Transactions on Aerospace and Electronic Systems

SN - 0018-9251

IS - 2

M1 - 8853264

ER -