有限长恒模接收机的一种闭式解
A Closed-Form Solution for the Finite Length Constant Modulus Receiver
摘要：
本文在有限信噪比和有限均衡器长度的实际条件下，导出了最小化Godard或恒模（CM）代价函数的封闭解。虽然Zeng等人已经报道了先前的工作，IEEE跨。信息论。1998年，建立恒模和维纳接收机之间的联系，我们表明，在高斯近似下的符号间干扰在均衡器的输出，CM有限长接收机是等效的非盲MMSE均衡器的复增益因子。一些模拟结果支持高斯近似假设。
英文摘要：
In this paper, a closed-form solution minimizing the Godard or Constant Modulus (CM) cost function under the practical conditions of finite SNR and finite equalizer length is derived. While previous work has been reported by Zeng et al., IEEE Trans. Information Theory. 1998, to establish the link between the constant modulus and Wiener receivers, we show that under the Gaussian approximation of intersymbol interference at the output of the equalizer, the CM finite-length receiver is equivalent to the nonblind MMSE equalizer up to a complex gain factor. Some simulation results are provided to support the Gaussian approximation assumption.
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