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Frequency-offset insensitive digital modem techniquesConventional DPSK systems are adversely affected by transmitter/receiver frequency offsets due to frequency reference errors and Doppler shifts. Two DPSK modem concepts are presented which avoid the long frequency acquisition process of conventional DPSK. One technique involves a modified demodulator for conventional DPSK signals, while the other involves making minor changes to both the modulator and demodulator. Simulation results are provided showing performance relative to conventional DPSK.
Document ID
19920014932
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dutta, S. (Rockwell International Corp. Cedar Rapids, IA, United States)
Nicholas, D. C. (Rockwell International Corp. Cedar Rapids, IA, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Publication Information
Publication: JPL, California Inst. of Tech., Proceedings of the 2nd International Mobile Satellite Conference (IMSC 1990)
Subject Category
Communications And Radar
Accession Number
92N24175
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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