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- W2622404200 abstract "Lowpass envelope approximation of smooth continuous-variable signals are introduced in this work. Envelope approximations are necessary when a given signal has to be approximated always to a larger value (such as in TV white space protection regions). In this work, a near-optimal approximate algorithm for finding a signal's envelope, while minimizing a mean-squared cost function, is detailed. The sparse (lowpass) signal approximation is obtained in the linear Fourier series basis. This approximate algorithm works by discretizing the envelope property from an infinite number of points to a large (but finite) number of points. It is shown that this approximate algorithm is near-optimal and can be solved by using efficient convex optimization programs available in the literature. Simulation results are provided towards the end to gain more insights into the analytical results presented." @default.
- W2622404200 created "2017-06-15" @default.
- W2622404200 creator A5049929597 @default.
- W2622404200 date "2017-06-03" @default.
- W2622404200 modified "2023-09-22" @default.
- W2622404200 title "Optimal Envelope Approximation in Fourier Basis with Applications in TV White Space" @default.
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