Performance analysis of OT-MRC over I.I.D. Nakagami and non-I.I.D. Reyleigh fading channels

Haewoon Nam, Young Chai Ko, Baxter F. Womack

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This paper presents the performance analysis of a conditional diversity combining scheme, which is called output-threshold maximum ratio combining (OT-MRC), over the independent identically distributed Nakagami-m with integer m and independent but not necessarily identically distributed Rayleigh fading channels. Based on the closed-form expressions for the statistics, the authors analyze the performance of the OT-MRC systems and compare it with that of the conventional MRC systems. They exploit the tradeoff between complexity and performance in this scheme over the Nakagami fading channels and see the effect of unbalance of the fading gains over multiple diversity branches on the performance of OT-MRC. They show, from some numerical examples, that the OT-MRC scheme, when compared with the MRC scheme, can reduce the complexity significantly without losing the required performance.

Original languageEnglish
Pages (from-to)1941-1946
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number6
Publication statusPublished - 2006 Nov

Bibliographical note

Funding Information:
Manuscript received January 27, 2005; revised September 2, 2005, December 23, 2005, and January 18, 2006. This work was supported by the center for Broadband orthogonal frequency-division multiplexing (OFDM) Mobile Access (BrOMA) at POSTECH through the Information Technology Research Center (ITRC) program of the Korean Ministry of Information and Communication (MIC), supervised by the Institute of Information Technology Assessment (IITA) (IITA-2005-C1090-0502-0008). The review of this paper was coordinated by Prof. Y. Ma.


  • Diversity combining
  • Nakagami-m fading channels
  • Nonindependent identically distributed (i.i.d.) Rayleigh fading channels
  • Output-threshold maximum ratio combining (OT-MRC)

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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