Performance analysis of an FFH/BFSK receiver with ratio-statistic combining in a fading channel with multitone interference

Ye Shun Shen, Szu Lin Su

Research output: Contribution to journalLetter

10 Citations (Scopus)


The bit-error probability (BEP) is evaluated for a fast frequency-hopping/binary frequency-shift keying spread-spectrum communication system over a frequency-nonselective, slowly fading channel with worst-case band multitone jamming and additive white Gaussian noise. A diversity reception technique with ratio-statistic combining is applied at the receiver. Both square-law and envelope detectors are utilized and analyzed. Based on circularly symmetric signal theory, this letter obtains the closed-form expressions of probability density function and cumulative distribution function of the ratio-statistic output. It is shown from the analytical results, and verified by simulation, that the BEP performance of the ratio-statistic receiver is sensitive to the fading effect on the desired signal, but is insensitive to that on the jamming tones. It is also shown that the envelope detector provides better performance than the square-law detector.

Original languageEnglish
Pages (from-to)1643-1648
Number of pages6
JournalIEEE Transactions on Communications
Issue number10
Publication statusPublished - 2003 Oct 1


All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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