Title :
Adaptive filter based on SAW injection-locked oscillator
Author :
Zhang, C. ; Yin, J. ; Lin, Q. ; Shui, Y.
Author_Institution :
Inst. of Acoust., Nanjing Univ., China
Abstract :
A new adaptive filter for cancelling narrow-band interference in spread spectrum communications systems is described in this paper. The filter employs a SAW injection-locked oscillator (SAWILO) to track CW interference signal in a simulated spread spectrum system. The filter demonstrates a 20 dB interference cancellation over the locking bandwidth of SAWILO in real time. The filter offers the advantage in terms of complexity over other equivalent systems. The adaptive filter is presented with experimental measurements
Keywords :
VHF filters; adaptive filters; injection locked oscillators; interference suppression; matched filters; spread spectrum communication; surface acoustic wave convolution; surface acoustic wave filters; surface acoustic wave oscillators; 1.2 MHz; 38.5 to 39 MHz; CW interference signal tracking; SAW injection-locked oscillator; adaptive filter; interference cancellation; narrow-band interference; spread spectrum communications system; Adaptive filters; Bandwidth; Convolvers; Frequency; Injection-locked oscillators; Interference cancellation; Interference suppression; Matched filters; Spread spectrum communication; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495544
