Title :
A robust baud rate estimator for noncooperative demodulation
Author :
Kueckenwaitz, Martin ; Quint, Franz ; Reichert, Juergen
Author_Institution :
Dept. of Defense & Civil Syst., DaimlerChrysler Aerosp. GmbH, Ulm, Germany
Abstract :
This article describes a robust baud rate estimator for the noncooperative demodulation of digitally modulated communication signals. The described algorithm is carried out in three stages. Starting with a coarse estimate in the first stage, this is refined in the following stages resulting in a very accurate estimate of the unknown band rate. Further an estimate of the symbol phase to initialize a digital phase locked loop is obtained. These signal parameters are used to obtain a control signal which drives an interpolator. Special care has been taken to cope with the time variant and frequency selective distortions expected in the HF-band
Keywords :
demodulation; digital phase locked loops; digital radio; interpolation; phase estimation; phase shift keying; HF-band; coarse estimate; control signal; digital phase locked loop; digitally modulated communication signals; interpolator; noncooperative demodulation; robust baud rate estimator; signal parameters; symbol phase; Baseband; Blind equalizers; Demodulation; Frequency; Parameter estimation; Phase estimation; Phase locked loops; Robustness; Timing; Transmitters;
Conference_Titel :
MILCOM 2000. 21st Century Military Communications Conference Proceedings
Conference_Location :
Los Angeles, CA
Print_ISBN :
0-7803-6521-6
DOI :
10.1109/MILCOM.2000.904075