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首页> 外文会议>International Conference on Signal Processing(ICSP'06); 20061116-20; Guilin(CN) >Classification of OQPSK-Type Signals by Detecting Offset-Timing between I/Q Samples
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Classification of OQPSK-Type Signals by Detecting Offset-Timing between I/Q Samples

机译：通过检测I / Q样本之间的偏移定时来对OQPSK类型的信号进行分类

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摘要

It is seldom discussed how to classify OQPSK-type signal (MSK, OQPSK or π/2BPSK) and other digital quadrature modulation (QPSK and 16QAM). A new algorithm called C-DOT (Classifier on Detecting Offset-Timing) is provided in this paper to resolve this problem. The spectrum of carrier-synchronized signal's SST (symmetric square transform) will be constructed firstly. The maximal bin of its nonlinear filtered version will be taken as a test variable then. If test variable is greater than a well-chosen threshold, the received signal can be claimed one of the OQPSK-type signal. The Monte Carlo simulation indicates the new algorithm is a competent preliminary classifier for further discrimination.
机译：很少讨论如何对OQPSK型信号（MSK，OQPSK或π/ 2BPSK）和其他数字正交调制（QPSK和16QAM）进行分类。本文提供了一种称为C-DOT（检测偏移时间的分类器）的新算法来解决此问题。首先将构建载波同步信号的SST（对称平方变换）的频谱。然后将其非线性过滤版本的最大bin用作测试变量。如果测试变量大于精心选择的阈值，则可以将接收到的信号声明为OQPSK类型的信号之一。蒙特卡洛模拟表明，新算法是用于进一步区分的有能力的初步分类器。

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