Apparatus and method for using adaptive algorithms to exploit sparsity in target weight vectors in an adaptive channel equalizer
AssigneeKoninklijke Philips Electronics N.V.
InventorsRichard K. Martin, Robert C. Williamson, William A. Sethares
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Abstract
An apparatus and method is disclosed for using adaptive algorithms to exploit sparsity in target weight vectors in an adaptive channel equalizer. An adaptive algorithm comprises a selected value of a prior and a selected value of a cost function. The present invention comprises algorithms adapted for calculating adaptive equalizer coefficients for sparse transmission channels. The present invention provides sparse algorithms in the form of a Sparse Least Mean Squares (LMS) algorithm and a Sparse Constant Modulus Algorithm (CMA) and a Sparse Decision Directed (DD) algorithm.
Claims20
An apparatus for calculating adaptive equalizer coefficients that uses an algorithm that is capable of exploiting sparsities in target weight vectors in an adaptive channel equalizer to increase a convergence rate of at least one adaptive equalizer coefficient.
A television receiver capable of calculating adaptive equalizer coefficients that uses an algorithm that is capable of exploiting sparsities in target weight vectors in an adaptive channel equalizer to increase a convergence rate of at least one adaptive equalizer coefficient.
A method for calculating adaptive equalizer coefficients comprising the steps of:
- calculating at least one adaptive equalizer coefficient with an algorithm that is capable of exploiting sparsities in target weight vectors in an adaptive channel equalizer;
- and
- increasing a convergence rate of at least one adaptive equalizer coefficient.
Computer executable process steps, stored on a computer readable storage medium, for calculating adaptive equalizer coefficients comprising the steps of:
- calculating at least one adaptive equalizer coefficient with an algorithm that is capable of exploiting sparsities in target weight vectors in an adaptive channel equalizer;
- and
- increasing a convergence rate of at least one adaptive equalizer coefficient.
Dependencies are inferred from the claim text.