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数字调制
相关语句
  digital modulation
    Digital modulation type recognition using neural network based on discrete searching
    基于离散搜索神经网络的数字调制类型识别
短句来源
    Automatic Digital Modulation Recognition Based on ROLS Radial Basis Function Neural Network
    基于ROLS的径向基函数神经网络实现数字调制自动识别
短句来源
    Software Design and Realization of digital modulation and Demodulation in Telecontrol & Telemetry System
    遥控遥测数字调制解调的软件化设计与实现
短句来源
    3. BP and RBF pattern recognition approach for digital modulation signals based on the statistical parameters histogram distribution are presented, the performance of BP or RBF is analyzed.
    3.基于数字调制信号的特征直方参量分析,提出了采用BP和RBF两类网络进行数字信号调制识别的方法,并对其识别性能进行了对比分析,数值模拟结果证实了提出方法的有效性。
短句来源
    ANNs Approach to Digital Modulation Recognition
    数字调制信号的神经网络识别方法
短句来源
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  “数字调制”译为未确定词的双语例句
    Application of Digital Automatic Modulation Recognition in Telemetry Simulate System
    遥测信号仿真系统中的数字调制识别应用
短句来源
    Research and Application on an Effective Combination Classifier of Neural Network
    基于快速组合神经网络分类器的数字调制识别新方法
短句来源
    The Modulation Signals Recognition on Neural Networks and DS P
    基于DSP的数字调制信号神经网络识别算法
短句来源
    Then, the paper introduces the math module and achieving method of software modulation and demodulation of common digital modulating signals used in telecontrol & telemetry system.
    接着介绍了遥控遥测常用的数字调制信号的软件调制解调的数学模型和实现方法。
短句来源
    The overall success rate is not less than 94% at the signal- to- noise ratio (SNR) of no less than 10 dB. Furthermore, this system is applied to on-line automatic modulation recognition of real satellite signals. Recognizing a signal takes no more than ten seconds.
    本文所构建的系统对于信噪比不小于10dB的计算机仿真的各种数字调制信号,识别总体成功率不小于94%,而且系统能够对实际卫星信号进行在线调制自动分析,对一个信号的分析过程不到10秒钟。
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  digital modulation
The digital modulation/demodulation methods are applied to the OFDM algorithm.
      
Digital Modulation Ellipsometry in Monitoring the Growth of Thermooxide Layers
      
A unified method of upgrading the polarization-optical reflectometric schemes for continuously monitoring the thickness of surface oxide layers is developed on the basis of digital modulation ellipsometry.
      
A new digital modulation recognition method using features extracted from GAR model parameters
      
For InAs-GaAs based quantum dot lasers emitting at 1300?nm digital modulation showing an open eye pattern up to 12?Gb/s at room temperature is demonstrated, at 10?Gb/s the bit error rate is below 10-12 at -2?dBm receiver power.
      
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A new algorithms of digital modulation recognition is presented in this article. Artificial neural networks(ANNs) are used to recognize digital modulation in this approach, which is suitable for digital modulation types including 2ASK,4ASK,2FSK,4FSK,2PSK,4PSK. ANNs approach can automatically chose the threshold for each feature. It not only makes the classification intelligible, but also improves the success rate of classification.

提出数字调制信号的人工神经网络识别方法,从信号幅度、相位、频率及功率谱等特性中提取五种特征参数,用于训练神经网络对数字调制信号的识别。采用神经网络,不仅可提高识别的智能化,而且能提高正确识别率。

This paper presents a design method of capacitance displacement sensor based on digital synthesis technology. Through analyzing the factors that influence the waveform quality, the corresponding measure can be performed to improve the Signal Noise Ratio (SNR) of the waveform. So the measurement accuracy of the sensor is improved largely by using a high stability digital excitation source and reference source in AC bridge method. Validity of the mathematical theory analysis of the method is experimentally verified....

This paper presents a design method of capacitance displacement sensor based on digital synthesis technology. Through analyzing the factors that influence the waveform quality, the corresponding measure can be performed to improve the Signal Noise Ratio (SNR) of the waveform. So the measurement accuracy of the sensor is improved largely by using a high stability digital excitation source and reference source in AC bridge method. Validity of the mathematical theory analysis of the method is experimentally verified.

本文提出了一种基于数字调制和解调技术的电容式位移传感器的设计方法。这种数字调制和解调技术是数字合成技术在信号处理领域的一种应用。通过对影响数字合成波形质量的各种因素的分析 ,给出提高数字合成信噪比的相应措施。实验结果表明 ,这种基于数字合成技术的电容式位移传感器可实现高精度位移测量。

Based on the characteristics of power line communication (PLC) channel, methods for improving the fundamental modulations for PLC are proposed, such as self-adapting FSK modulation and 50 Hz RF filter. The way of designing soft-Modem is also provided. The TCM measures are taken to improve the performance of QAM and the relevant theoretic analysis is done, in order to overcome the unfavorable factors caused by the noises and attenuation of PLC and to balance the conflict between frequency-band efficiency and...

Based on the characteristics of power line communication (PLC) channel, methods for improving the fundamental modulations for PLC are proposed, such as self-adapting FSK modulation and 50 Hz RF filter. The way of designing soft-Modem is also provided. The TCM measures are taken to improve the performance of QAM and the relevant theoretic analysis is done, in order to overcome the unfavorable factors caused by the noises and attenuation of PLC and to balance the conflict between frequency-band efficiency and error-probability of QAM.

针对电力线通信 ( PLC)信道的特点 ,对多种基本数字调制技术提出了改进方案。其中 :对频移键控采取频点的自适应调整、陷波等措施 ,并给出了“软猫”设计方案 ;对正交幅度调制提出了采用格状编码调制技术 ( TCM)的改进措施 ,并进行了相关理论分析 ,以克服 PLC信道的噪声与衰减等不利因素 ,以及协调频带利用率与误码率之间的矛盾。

 
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