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A New Iterative Algorithm for Finding the Minimum Sampling Frequency of MultiBand Signals

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3 Author(s)
Yuan-Pei Lin ; Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan ; Yi-De Liu ; See-May Phoong

In this correspondence, we propose a new iterative algorithm for finding the minimum sampling frequency of a signal that consists of multiple bandpass signals. This finds important application in software radio where it is desirable to downconvert multiple bandpass signals simultaneously. We will derive a new set of conditions for alias-free sampling. The minimum sampling frequency can be found by iteratively increasing the sampling frequency to meet the alias-free conditions. We will show how the algorithm can be generalized to find alias-free sampling frequency intervals. Simulations will be given to demonstrate the usefulness of the proposed method.

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Signal Processing, IEEE Transactions on  (Volume:58 ,  Issue: 10 )