A finite-interval constant modulus algorithm


A finite-interval constant modulus algorithm is developed which is vastly simpler than the Analytic Constant Modulus Algorithm and, unlike that algorithm, can claim to minimize a constant modulus criterion. It requires one QR decomposition of a data matrix, followed by a power iteration. Step size bounds which ensure monotonic convergence are obtained in analytic form, and proper tuning leads to an algorithm which converges typically within a few iterations. The algorithm thus gives a computationally feasible method for implementing constant modulus signal restoration in packet-based transmission systems.

DOI: 10.1109/ICASSP.2002.5745101

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@article{Regalia2002AFC, title={A finite-interval constant modulus algorithm}, author={Phillip A. Regalia}, journal={2002 IEEE International Conference on Acoustics, Speech, and Signal Processing}, year={2002}, volume={3}, pages={III-2285-III-2288} }