DocumentCode :
763473
Title :
Continuous Phase Chirp (CPC) Signals for Binary Data Communication-Part I: Coherent Detection
Author :
Hirt, Walter ; Pasupathy, Subbarayan
Author_Institution :
IBM Zurich Res. Lab., Zurich, Switzerland
Volume :
29
Issue :
6
fYear :
1981
fDate :
6/1/1981 12:00:00 AM
Firstpage :
836
Lastpage :
847
Abstract :
Chirp (linear FM) signals provide an attractive wideband digital modulation scheme in applications where interference rejection is important. This paper evaluates the error rate (performance) of coherent binary continuous phase chirp (CPC) receivers operating on the additive white Gaussian noise (AWGN) channel and determines the improvement in performance made possible by multiple bit observation. In particular, it is shown that a receiver with two bit observation, giving up to 1.75 dB signal-to-noise ratio (SNR) improvement over the optimum single bit chirp receiver, provides a good compromise between SNR gain and system complexity. Furthermore, a simple, suboptimum, average matched filter (AMF) receiver is analyzed, and it is shown that a two-bit observation is optimum, giving a performance equivalent to that of antipodal phaseshift keying (PSK). An implementation of this receiver in the form of in-phase and quadrature demodulators is also derived.
Keywords :
Chirp modulation; FM modulation/demodulation; Matched filters; Radio receivers; AWGN; Additive white noise; Chirp; Digital modulation; Error analysis; Interference; Matched filters; Phase detection; Signal to noise ratio; Wideband;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1981.1095055
Filename :
1095055
Link To Document :
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