JOURNAL OF COMPUTERS (JCP)
ISSN : 1796-203X
Volume : 1    Issue : 5    Date : August 2006

On Maximum-Likelihood Detection for Non-coherent FH/BFSK in Multitone Jamming
Yi-Chen Chen
Page(s): 1-8
Full Text:
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Abstract
We derive the optimum maximum-likelihood (ML) non-coherent detector for FH/BFSK systems in the
environment of multitone jamming and additive white Gaussian noise with no aid of jamming state
indication and the resultant signalplus- jammer tone, which, however, were required in K. C. Teh’s
previous work [1]. Because of the optimum ML detector’s huge complexity, a novel complexity-
reduced scheme which is called joint-suboptimum maximum-likelihood (JSML) detector is
proposed. Simulation results show the superiority of the proposed optimum ML and JSML detectors
over other existing diversity combining approaches. The performance analysis in terms of bit error
probability (BEP) for the JSML detector with single diversity in n = 1 and n = 2 band multitone
jamming (BMJ) is provided and further validated by simulation results. In moderate and high SNR
conditions, though the proposed JSML detector performs slightly worse than the optimum ML
detector, it does achieve much complexity reduction.

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