Semidefinite Relaxation Based Blind Equalization using Constant Modulus Criterion

Kun Wang

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arXiv · 1808.07232

Semidefinite Relaxation Based Blind Equalization using Constant Modulus Criterion

Kun Wang

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Abstract

Blind equalization is a classic yet open problem. Statistic-based algorithms, such as constant modulus (CM), were widely investigated. One inherent issue with blind algorithms is the phase ambiguity of equalized signals. In this letter, we propose a novel scheme based on CM criterion and take advantage of the asymmetric property in a class of LDPC codes to resolve the phase ambiguity. Specifically, a new formulation with modified CM objective function and relaxed code constraints is presented.

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Kun Wang. 2018-08-22. Semidefinite Relaxation Based Blind Equalization using Constant Modulus Criterion. https://arxiv.org/abs/1808.07232

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