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 -