DocumentCode :
2250066
Title :
Quadratic detectors for noise-immune detection of modulated signals
Author :
Fang, Jing ; Atlas, Les E.
Author_Institution :
Interactive Syst. Design Lab., Washington Univ., Seattle, WA, USA
fYear :
1993
fDate :
1-3 Nov 1993
Firstpage :
1427
Abstract :
Quadratic detectors have been shown to have good frequency selectivity, short transient response, and effective noise suppression. We demonstrate how phase shifts in phase-shift-keyed signals are easily detected even in strong background noise, and how short-duration frequency variation can be accurately evaluated. Moreover design constraints of quadratic detectors are discussed and trade-offs are presented. Our simulations showed that the quadratic detector provides a simple method for the detection of phase shifts and frequency shifts in clean or noisy environments. These detectors and the design technique also have general signal processing applications
Keywords :
demodulation; parameter estimation; phase shift keying; signal detection; signal processing; background noise; clean environment; design constraints; frequency selectivity; frequency shift estimation; modulated signals; noise suppression; noise-immune detection; noisy environments; phase shift estimation; phase-shift-keyed signals; quadratic detectors; short-duration frequency variation; signal processing applications; simulations; transient response; Background noise; Filtering; Frequency estimation; Frequency shift keying; Phase detection; Phase frequency detector; Phase noise; Signal design; Signal detection; Signal processing; Time frequency analysis; Transient response; Working environment noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
ISSN :
1058-6393
Print_ISBN :
0-8186-4120-7
Type :
conf
DOI :
10.1109/ACSSC.1993.342305
Filename :
342305
Link To Document :
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