Title :
Effect of PLL frequency synthesizer in FSK frequency-hopped communications
Author :
Alexovich, John R. ; Gagliardi, Robert M.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
3/1/1989 12:00:00 AM
Abstract :
Synthesizer transient and spur effects in an frequency-shift-keying frequency-hopped system are investigated. Models for transient analysis are developed, and resulting degradations to performance are computed. Compensation methods, such as ping-ponging multiple synthesizers and gating symbol detectors, are considered. A spur analysis is presented, and the overall output effects on hopping spectrum and demodulation are shown. Methods to bound degradation in terms of number and strength of spur lines are presented
Keywords :
frequency agility; frequency shift keying; frequency synthesizers; phase-locked loops; FSK frequency-hopped communications; PLL frequency synthesiser; degradation; demodulation; gating symbol detectors; hopping spectrum; ping-ponging multiple synthesisers; spur analysis; transient analysis; Additive white noise; Degradation; Demodulation; Detectors; Frequency shift keying; Frequency synthesizers; Phase locked loops; Rician channels; Spread spectrum communication; Transmitters;
Journal_Title :
Communications, IEEE Transactions on
