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

Subject Categories:

  • Radio Countermeasures
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE