Noncoherent detection of BFSK signals with linear and nonlinear diversity combing over Rician fading channels with partial-band interference
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Authors
Karaagac, Ahmet Cem
Subjects
Advisors
Robertson, R. Clark
Ha, Tri T.
Date of Issue
1991-03
Date
March 1991
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A performance analysis of Binary Orthogonal Frequency Shift Keying (BFSK) Fast Frequency Hopped (FFH) receivers implemented with both square-jaw and envelope detectors is performed. Bit error possibilities of the two types of receivers for linear combining, noise-normalization combining, and self-normalization combining under worst case partial-band interference with nonselective Rician fading and thermal noise are compared. The analysis is repeated for the case of no interference to point out the effect of fading. A study of nonlinear diversity combining receivers (self-normalization and noise-normalization) is also performed for a system model that is free from thermal noise. Envelope and square-jaw detectors for particular types of nonlinear combining investigated do not differ in performance, but this is not true for linear combing detectors.. The visible superiority of envelope detectors for linear combining is noted. Nonlinear combining receivers achieve a diversity and performance improvement compared to linear combining receivers.
Type
Thesis
Description
Series/Report No
Department
Department of Electrical and Computer Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
184 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner