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Interference detection in slow frequency-hopped quadrature phase-shift-keying systems over fading channels

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3 Author(s)
Aye Aung ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore ; Kah Chan Teh ; Kwok Hung Li

In this study, the authors present an algorithm to detect unknown interference in slow frequency-hopped quadrature phase-shift-keying systems. Both partial-band noise interference and multitone interference are considered. The algorithm is developed based on the correlator outputs over one hop. A suitable threshold level is derived for detection. The authors formulate the analytical expressions for probability of detection for both interference models. Numerical results reveal that the proposed algorithm can detect both interference types even at low interference power.

Published in:

IET Communications  (Volume:7 ,  Issue: 13 )