An analysis of constant modulus receivers
- 1 January 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Signal Processing
- Vol. 47 (11) , 2990-2999
- https://doi.org/10.1109/78.796434
Abstract
This paper investigates connections between (non-blind) Wiener receivers and blind receivers designed by minimizing the constant modulus (CM) cost. Applicable to both T-spaced and fractionally spaced FIR equalization, the main results include (1) a test for the existence of CM local minima near Wiener receivers; (2) an analytical description of CM receivers in the neighborhood of Wiener receivers; (3) mean square error (MSE) bounds for CM receivers. When the channel matrix is invertible, we also show that the CM receiver is approximately colinear with the Wiener receiver and provide a quantitative measure of the size of neighborhoods that contain the CM receivers and the accuracy of the MSE boundsKeywords
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