发明名称 |
Apparatus and method for correcting phase error |
摘要 |
An apparatus for correcting a phase error is provided. The apparatus includes an error estimating module and a correcting module. The error estimating module receives a phase-shift keying signal, and calculates a phase error according to the phase-shift keying signal, a plurality of known candidate signals and Bayesian estimation. The correcting module corrects the phase-shift keying signal according to the phase error. |
申请公布号 |
US8804877(B2) |
申请公布日期 |
2014.08.12 |
申请号 |
US201213613207 |
申请日期 |
2012.09.13 |
申请人 |
MStar Semiconductor, Inc. |
发明人 |
Cheng Kai-Wen;Liao Yi-Ying;Lin Tung-Sheng;Tung Tai-Lai |
分类号 |
H03D3/22 |
主分类号 |
H03D3/22 |
代理机构 |
Edell, Shapiro & Finnan LLC |
代理人 |
Edell, Shapiro & Finnan LLC |
主权项 |
1. A phase error correcting apparatus, applied to a phase-shift keying communication system, the apparatus comprising:
an error estimating module, for receiving a phase-shift keying signal comprising an original signal and a noise signal, and calculating a phase error caused by the noise signal according to the phase-shift keying signal and a plurality of candidate signals using Bayesian estimation; wherein the original signal represents one of the plurality of candidate signals; and a correcting module, for correcting the phase-shift keying signal according to the phase error, wherein the error estimating module associates a quadratic of a difference of the original signal and an estimated signal corresponding to the phase-shift keying signal to a Bayesian risk, and calculates the phase error toward minimizing the Bayesian risk, in a way that a phase difference of the corrected phase-shift keying signal and the original signal is minimized. |
地址 |
Hsinchu Hsien TW |