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首页> 外文会议>Thirty-Fifth Annual Conference on Information Sciences and Systems Vol.2, Mar 21-23, 2001, Baltimore, Maryland >Phase recovery based on minimization of Single-Axis Constant Modulus criterion: Performance analysis
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Phase recovery based on minimization of Single-Axis Constant Modulus criterion: Performance analysis

机译：基于最小化单轴恒模准则的相位恢复：性能分析

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摘要

In this paper we address the problem of phase recovery of a complex signal with a real valued source based on th'e optimization of a real Constant Modulus criterion also referred to as Single-Axis Consant Modulus (SA-CM) criterion. Exact expression of the minima of the criterion are furnished when the signal is corrupted with Gaussian noise. The conditions under which the criterion admits only global minima leading to perfect phase restoration are derived for PAM and VSB modulations. These conditions are expressed as simple bounds on the dispersion constant of the criterion. Under these conditions it is shown that the derivative of the SA-CM cost function can be used as a new phase detector in a Phase Locked Loop (PLL) loop implementation, for instance, as an efficient blind phase tracking solution.
机译：在本文中，我们基于对实际常数模量准则（也称为单轴恒定模量（SA-CM）准则）的优化，解决了具有实际值源的复杂信号的相位恢复问题。当信号被高斯噪声破坏时，将提供准则的最小值的精确表达。对于PAM和VSB调制，导出了标准仅允许导致完美相位恢复的全局最小值的条件。这些条件表示为准则的色散常数的简单界限。在这些条件下，表明SA-CM成本函数的导数可以用作锁相环（PLL）环路实现中的新相位检测器，例如，作为有效的盲相位跟踪解决方案。

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