Unified Finite Series Approximation of FSO Performance over Strong Turbulence Combined with Various Pointing Error Conditions

Kug Jin Jung, Sung Sik Nam, Mohamed Slim Alouini, Young Chai Ko

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


In this paper, we investigate both the bit error rate (BER) and outage performance of free-space optical (FSO) links over strong turbulence combined with various pointing error conditions. Considering atmospheric turbulence and pointing errors as main factors that deteriorate the quality of an optical link, we obtain a unified finite series approximation of the composite probability density function, which embraces generalized pointing error models. This approximation leads to new unified formulas for the BER and outage capacity of an FSO link, which account for the two possible detection mechanisms of intensity modulation/direct detection and heterodyne detection. Selected simulation results confirm that the newly derived approximations can give precise predictions of both the average BER and the outage capacity of FSO communication that are generally applicable to all environments.

Original languageEnglish
Article number9138485
Pages (from-to)6413-6425
Number of pages13
JournalIEEE Transactions on Communications
Issue number10
Publication statusPublished - 2020 Oct

Bibliographical note

Funding Information:
Manuscript received February 12, 2020; revised June 7, 2020; accepted July 4, 2020. Date of publication July 10, 2020; date of current version October 16, 2020. This research was supported by the MSIT (Ministry of Science and ICT), Korea, under the ITRC (Information Technology Research Center) support program (IITP-2020-2015-0-00385) supervised by the IITP (Institute for Information & communications Technology Promotion). This is an extended version of article which was presented in ICC (2018). The associate editor coordinating the review of this article and approving it for publication was G.-C. Yang. (Corresponding authors: Sung Sik Nam; Young-Chai Ko.) Kug-Jin Jung and Young-Chai Ko are with the School of Electrical Engineering, Korea University, Seoul 02841, South Korea (e-mail: kug0860@korea.ac.kr; koyc@korea.ac.kr).

Publisher Copyright:
© 1972-2012 IEEE.


  • Wireless optical communication (WOC)
  • bit error rate (BER)
  • generalized pointing errors
  • mobile platform
  • outage capacity
  • unified expression

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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