Recovering a Clipped Signal in Sparseland

Details Recovering a Clipped Signal in Sparseland Recovering a Clipped Signal in Sparseland

2011-10-23

arxiv.org/abs/1110.5063v1

Computer Science

Information Theory

Scientific paper

In many data acquisition systems it is common to observe signals whose amplitudes have been clipped. We present two new algorithms for recovering a clipped signal by leveraging the model assumption that the underlying signal is sparse in the frequency domain. Both algorithms employ ideas commonly used in the field of Compressive Sensing; the first is a modified version of Reweighted $\ell_1$ minimization, and the second is a modification of a simple greedy algorithm known as Trivial Pursuit. An empirical investigation shows that both approaches can recover signals with significant levels of clipping

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