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carrier tracking by smoothing filter improves symbol snrThe potential benefit of using a smoothing filter to estimate carrier phase over use of phase locked loops (PLL) is determined. Numerical results are presented for the performance of three possible configurations of the deep space network advanced receiver. These are residual carrier PLL, sideband aided residual carrier PLL, and finally sideband aiding with a Kalman smoother. The average symbol signal to noise ratio (SNR) after losses due to carrier phase estimation error is computed for different total power SNRs, symbol rates and symbol SNRs. It is found that smoothing is most beneficial for low symbol SNRs and low symbol rates. Smoothing gains up to 0.4 dB over a sideband aided residual carrier PLL, and the combined benefit of smoothing and sideband aiding relative to a residual carrier loop is often in excess of 1 dB.
Document ID
19870048065
Document Type
Reprint (Version printed in journal)
Authors
Pomalaza-Raez, Carlos A.
(Clarkson University Potsdam, NY, United States)
Hurd, William J.
(California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 13, 2013
Publication Date
September 1, 1986
Publication Information
Publication: IEEE Transactions on Aerospace and Electronic Systems
Volume: AES-22
ISSN: 0018-9251
Subject Category
COMMUNICATIONS AND RADAR
Distribution Limits
Public
Copyright
Other