Title :
Comments on "Degradation of signal-to-noise ratio due to amplitude ripple
Author_Institution :
Inst. for Stat. Sci., Acad. Sinica, Taipei, Taiwan
Abstract :
Sadr, Shahshahani, and Hurd (see ibid., vol.35, no.4, p.874, 1989) studied the effect of filtering on the signal-to-noise ratio (SNR) of a coherently demodulated bandlimited signal and found the worst case amplitude ripple. They showed that when the maximum passband amplitude ripple is 2/spl Delta/, then the signal-to-noise ratio is degraded by at most (1-/spl Delta//sup 2/). A very simple proof is given in this article.<>
Keywords :
demodulation; filtering theory; SNR degradation; amplitude ripple; coherently demodulated bandlimited signal; filtering; signal-to-noise ratio; Band pass filters; Bandwidth; Chaos; Councils; Degradation; Filtering; Low pass filters; Matched filters; Passband; Signal to noise ratio;
Journal_Title :
Information Theory, IEEE Transactions on
