کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
466776 697877 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Detection and countermeasure of interference in slow FH/MFSK systems over fading channels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Detection and countermeasure of interference in slow FH/MFSK systems over fading channels
چکیده انگلیسی

In this paper, we present an algorithm to detect unknown interference in slow frequency-hopped MM-ary frequency-shift-keying (SFH/MFSK) systems over fading channels. Both partial-band noise interference (PBNI) and multitone interference (MTI) are considered. The proposed algorithm performs the detection process after dehopping by making use of square-law detectors. We first analyze the statistical property of the outputs of the square-law detectors over one hop duration, and an appropriate threshold level is derived for detecting the interference based on a binary hypothesis testing. We also formulate the closed-form expressions for the probabilities of detection of both types of interference experienced in any particular frequency hop. The analytical results are validated by the simulation results and they reveal that the proposed algorithm is able to provide good detection performance for both types of interference and outperforms the conventional ratio–threshold test (RTT) method.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physical Communication - Volume 10, March 2014, Pages 11–23
نویسندگان
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