Accession Number:
ADA282805
Title:
The Effect of Rician Fading and Partial-Band Interference on Noise- Normalized Fast Frequency-Hopped MFSK Receivers
Descriptive Note:
Master's thesis
Corporate Author:
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Personal Author(s):
Report Date:
1994-03-01
Pagination or Media Count:
72.0
Abstract:
The performance of an M-ary orthogonal frequency-shift keying MFSK communication system employing fast frequency-hopped spread spectrum waveforms transmitted over a frequency-nonselective, slowly fading channel with partial- band interference is analyzed. A procedure referred to as noise-normalization combining is employed by the system receiver to minimize partial-band interference effects. Each hop is assumed to fade independently. The partial- band interference is modeled as a Gaussian process. Both the signal and the partial-band interference are assumed to be affected by the fading channel which is modeled as Rician. The effect of fading of the partial-band interference on worst-case receiver performance is relatively minor. When there is no signal fading or when the signal fading is Rician, then the counter-intuitive result of poorer receiver performance when the partial-band interference experiences fading is obtained. This effect is most pronounced when the signal does not fade and the partial-band interference experiences Rayleigh fading. Communications, Noise-normalized receiver, Noncoherent receiver, Spread spectrum, FFH, M-ary FSK
Descriptors:
Subject Categories:
- Radio Countermeasures
- Radio Communications