A generalized quadrature bandpass sampling in radio receivers

Authors:
Yi-Ran Sun;Svante Signell
Affiliations:
Royal Institute of Technology (KTH), Stockholm, Sweden;Royal Institute of Technology (KTH), Stockholm, Sweden
Venue:
Proceedings of the 2005 Asia and South Pacific Design Automation Conference
Year:
2005

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Abstract

Bandpass Sampling (BPS) realizes frequency down-conversion by undersampling. Noise aliasing as the direct consequence of the lower sampling rate causes a performance degradation. In this paper, a Generalized Quadrature BPS (GQBPS) combined with a filter which performs both reconstruction and bandpass filtering is studied in the frequency domain with respect to both signal reconstruction and noise aliasing reduction. The theoretical analyses show that GQBPS might be a potential way to reduce noise aliasing at the cost of a more complicated reconstruction algorithm.