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http://dx.doi.org/10.5573/ieek.2013.50.7.225

The Multiband Interpolant Filter in the Second-order BPS System  

Kim, Hyuk (Department of Information and Communication Engineering, Hannam University)
Baek, Jein (Department of Information and Communication Engineering, Hannam University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.7, 2013 , pp. 225-230 More about this Journal
Abstract
In a bandpass sampling (BPS), the frequency of the sampler is lower than that of the signal being sampled. In this method, the baseband spectrum directly appears by the sampling operation, so that it is not necessary to use any frequency down-converter, which makes the receiver's hardware simpler. The second-order BPS uses two identical BPS samplers, of which sampling times are offset by each other. By exploiting the relationship between two sampled signals, it can be possible to cancel the aliased signal component or the interference due to the bandpass sampling. In order to cancel the interference, an interpolant filter is used to manipulate the phase characteristics of the BPS sampled signal. In this paper, it is introduced a multiband interpolant filter which can simultaneously cancel multiple interference signals that have been aliased from multiple frequency bands. In case of no need of interference cancellation, another method is suggested to enhance the signal quality by 3dB. A computer simulation has been performed, and the feasibility of the suggested methods has been verified.
Keywords
bandpass sampling; subsampling; second-order BPS; interpolant filter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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