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Statistical analysis and performance evaluation of optical array receivers for deep-space optical communications under random tracking errors

Hashmi, Ali J. and Eftekhar, Ali A. and Adibi, Ali and Amoozegar, Farid (2018) Statistical analysis and performance evaluation of optical array receivers for deep-space optical communications under random tracking errors. Physical Communication, 31 . pp. 230-238. ISSN 1874-4907. http://resolver.caltech.edu/CaltechAUTHORS:20180622-093153953

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Abstract

Telescope array receiver is a viable architecture for Earth-based reception in a deep-space optical communication system. In this paper, effects of random tracking errors on the performance of optical array receivers for an inter-planetary deep-space optical communications link between Earth and Mars is investigated. The paper has two major parts. In the first part, statistical analysis and mathematical modeling of the impact of tracking errors on general direct-detection optical communication receivers is presented. The analytical results show that tracking errors could severely degrade the performance of optical receivers; hence, these need to be compensated, especially in a deep-space link. In the second part, design and analysis of a closed-loop tracking subsystem for telescope array receivers operating in a deep-space link is presented. An end-to-end simulation platform for communication between Earth and Mars is implemented that incorporates direct-detection array receivers and the proposed tracking subsystems to alleviate the effects of random tracking errors. Extreme channel conditions, i.e., maximum distance, strong background noise and turbulence conditions are modeled to evaluate the performance bounds. Simulations results depict that in worst-case channel conditions, the proposed architecture mitigates the impact of tracking errors to be within reasonable limits. Comparison of achievable data rates show that in the presence of random tracking errors, replacement of a large telescope (10m diameter) with an array of relatively smaller-sized telescopes (i.e., 100, 1m telescopes) results in acceptable performance loss (i.e., <13%). Hence, performance degradation due to tracking errors does not pose a major limitation in employing array architecture in deep-space communication. The presented analysis further strengthens the viability of array architecture compared to a monolithic, large telescope for deep-space communications.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.phycom.2018.03.010DOIArticle
Additional Information:© 2018 Elsevier B.V. Received 9 December 2017, Revised 17 March 2018, Accepted 17 March 2018, Available online 28 March 2018.
Record Number:CaltechAUTHORS:20180622-093153953
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180622-093153953
Official Citation:Ali J. Hashmi, Ali A. Eftekhar, Ali Adibi, Farid Amoozegar, Statistical analysis and performance evaluation of optical array receivers for deep-space optical communications under random tracking errors, Physical Communication, Volume 31, 2018, Pages 230-238, ISSN 1874-4907, https://doi.org/10.1016/j.phycom.2018.03.010. (http://www.sciencedirect.com/science/article/pii/S1874490717305888)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87315
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Jun 2018 15:36
Last Modified:29 Nov 2018 19:21

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