Digital modulation classification: the BPSK versus QPSK case

K. Kim, A. Polydoros
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引用次数: 85

Abstract

The authors report on a novel BPSK/QPSK classifier and compare it to the more traditional, ad-hoc techniques of-a-square-law classifier and phase-based classifiers (weighting on the phase histogram). The proposed classifier is derived by an approximation of the likelihood-ratio functionals of phase modulated digital signals in white Gaussian noise, called a quasi-log-likelihood-ratio (qLLR) rule. It is shown analytically that its performance is significantly better than that of intuitively designed phased-based rules or the conventional square-law classifier.<>
数字调制分类:BPSK与QPSK的案例
作者报告了一种新的BPSK/QPSK分类器,并将其与更传统的,特殊技术的平方律分类器和基于相位的分类器(相位直方图加权)进行了比较。该分类器是通过对高斯白噪声中相位调制数字信号的似然比函数的近似推导而来的,称为准对数似然比(qLLR)规则。分析表明,其性能明显优于直观设计的基于相位的规则或传统的平方律分类器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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