Title :
The recovery of carrier envelope information using randomized bandpass sampling
Author :
Wojtiuk, Jeflrey J.
Author_Institution :
Cooperative Res. Centre for Satellite Syst., South Australia Univ., Mawson Lakes, SA, Australia
Abstract :
To prevent errors due to alias components in the regular bandpass sampling of a real bandlimited signal, the sampling rate must be chosen so that the occupied signal bandwidth does not straddle adjacent higher order Nyquist zones. This is in addition to satisfying the minimum Nyquist-Landau (1967) sampling rate criterion. For randomized bandpass sampling the average sampling rate only has to exceed the Nyquist-Landau rate. A communications system example is presented to highlight the advantages of using randomized bandpass sampling for the recovery of the complex envelope from a modulated carrier signal
Keywords :
bandlimited signals; modulation; random processes; signal reconstruction; signal sampling; singular value decomposition; SVD based signal reconstruction; alias components; average sampling rate; bandlimited signal; carrier envelope information recovery; communications system; minimum Nyquist-Landau sampling rate criterion; modulated carrier signal; randomized bandpass sampling; sampling rate; signal bandwidth; Australia; Bandwidth; Communication systems; Lakes; Nonuniform sampling; Sampling methods; Satellites; Signal processing; Signal reconstruction; Signal sampling;
Conference_Titel :
Signal Processing and Its Applications, 1999. ISSPA '99. Proceedings of the Fifth International Symposium on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-86435-451-8
DOI :
10.1109/ISSPA.1999.815782
