Title :
On the noise behavior of a SAW convolver used as a matched filter
Author :
Ostermayer, Gerald
Author_Institution :
PSE MCS RA 2, Siemens AG, Wien, Austria
fDate :
4/1/2001 12:00:00 AM
Abstract :
The noise behavior of a surface acoustic wave convolver used as an analog matched filter is investigated in this paper. In contrast to the existing literature, the influence of noise processes with squared amplitudes is not neglected. It is shown that these quadratic noise contributions have a significant influence on the output signal-to-noise ratio (SNR) of the convolver for values of input SNR lower than 10 dB. The calculation is done for on-off keying coded signals but the results are also valid for other modulation schemes, e.g., phase shift keying
Keywords :
Gaussian noise; amplitude shift keying; matched filters; phase shift keying; random noise; surface acoustic wave convolution; surface acoustic wave filters; white noise; PSK; SAW convolver; matched filter; noise behavior; on-off keying coded signals; output SNR; phase shift keying; quadratic noise contributions; signal-to-noise ratio; surface acoustic wave convolver; Acoustic noise; Acoustic waves; Convolvers; Matched filters; Modulation coding; Noise level; Phase modulation; Phase shift keying; Signal to noise ratio; Surface acoustic waves;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
