Communication system and phase error estimating method thereof
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United States of America Patent
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Aug 1, 2017
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app pub date -
Jan 7, 2016
filing date -
Jan 28, 2015
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Abstract
A communication system includes a receiving circuit and a phase error estimating circuit. The receiving circuit receives an input signal x, which has an input phase θ in a polar coordinate system. According to partial differentiation performed on the natural logarithm of a function f(x, θ), the phase error estimating circuit generates an estimated phase error of the input signal x. f(x, θ) represents a probability function of receiving the input signal x at the receiving circuit.
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