Performance of fast frequency-hopped MFSK receivers with linear and self-normalization combining in a Rician fading channel with partial-band interference
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Authors
Robertson, R. Clark
Lee, Kang Yeun
Subjects
Advisors
Date of Issue
1992-05
Date
Publisher
IEEE
Language
Abstract
An error probability analysis is performed for both a self-normalized and conventional M-ary orthogonal frequency-shift-keying (MFSK) noncoherent receiver employing fast frequency-hopped (FFH) spread-spectrum waveforms transmitted over a Rician fading channel with partial-band interference. The partial-band interference is modeled as a Gaussian process. The self-normalization receiver employs a nonlinear combination procedure to minimize performance degradation due to partial-band interference. The performance of the conventional receiver is found to be significantly degraded by worst-case partial-band interference regardless of the modulation order or number of hops per data symbol used for all channel conditions. The self-normalization receiver, on the other hand, can provide a significant immunity to worst case partial-band interference for many channel conditions when diversity is used, provided the signal-to-thermal noise ratio is large enough to minimize degradation due to nonlinear combining losses. The improvement afforded by higher modulation orders is dependent on channel conditions with a significantly greater improvement obtained for Rician channels as compared with Rayleigh and near-Rayleigh channels.
Type
Article
Description
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Department
Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
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NPS Report Number
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Format
11 p.
Citation
R.C. Robertson, K.Y. Lee, "Performance of fast frequency-hopped MFSK receivers with linear and self-normalization combining in a Rician fading channel with partial-band interference," IEEE Journal on Selected Areas in Communications, v.10, no.4 (May 1992), pp. 731-741.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.