| 1. | Principle of optical dpsk modulation format
光差分相移键控调制格式原理 |
| 2. | Communication signals travel in space with different modulation formats
空间传播的通信信号采用了不同的调制方式。 |
| 3. | The radio surveillance digital system can identify the modulation format and parameters by data acquisition and signal processing in the complicated signal environments with noise
无线电监测调制识别系统能够在复杂环境和噪声干扰情况下对信号采集和处理确定信号各种参数,解调信号,从中获取信息。 |
| 4. | Modulation format is one of the most important characteristics used to distinguish communication signals . knowing the modulation format and modulation parameters of a communication signal is the first step of correct demodulation
调制方式是区分不同性质通信信号的一个重要特征，而要截获通信信号的信息内容，必须知道信号的调制方式和调制参数。 |
| 5. | Given a received communication signal , the objective of modulation recognition is to decide the modulation format and estimate the modulation parameters of the communication signal without any priori knowledge about the signal information content
给定一段接收的通信信号，调制识别的目的就是在未知调制信息内容的前提下，判断出通信信号的调制方式，并估计出相应的调制参数。 |
| 6. | Based on the analysis of invariant features in cumulant domain of communication signals , the classification of communication signals with mpsk , mask and mqam modulation formats is investigated this dissertation . the main works can be summarized as follows : 1
本文在前人工作的基础上，通过对信号累量域不变量特征的分析，深入研究了mpsk 、 mask和mqam数字通信信号的调制识别问题，主要工作可概括如下： 1 |
