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   调制解调方法 在 电信技术 分类中 的翻译结果: 查询用时:0.187秒
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调制解调方法
相关语句
  modulation and demodulation method
    Chaos parameter modulation and demodulation method based on state feedback
    基于状态反馈的混沌参数调制解调方法
短句来源
    Linear Modulation and Demodulation Method Based on Sampling and Filtering
    基于采样和滤波的线性调制解调方法
短句来源
    The Research of Modulation and Demodulation Method and Communication Mode Based on Polyphase Orthogonal Sequence
    基于多相正交序列的扩频通信系统的调制解调方法与通信方式的研究
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  “调制解调方法”译为未确定词的双语例句
    In this paper ,a new π/4DQPSK modulation which makes phase switch into phase smooth change is introduced.
    本文详细介绍了一种新型π/ 4DQPSK调制解调方法 ,该方法将π/ 4DQPSK调制中的相位跳变改为平滑变化。
短句来源
    The theory of modulation and demodulation of π/4-DQPSK were simply introduced,proposed a method to improve π/4-DQPSK signal transmission which can improve phase estimate error problem existing in the alternation of differentical code period.
    简略介绍π/4-DQPSK调制解调方法,并提出一种对π/4-DQPSK信号传输进行改进的方法,能够改善π/4-DQPSK信号接收时在不同码元周期之间出现的相位判断错误的问题。
短句来源
    With the reference to the relevant specifications of DVB-S and DVB-S2,an effective QPSK carrier recovery method is integrated.
    针对欧洲DVB-S及DVB-S2协议标准均采用的QPSK调制解调方法,探讨一种有效的载波恢复技术。
短句来源
    This thesis studied the modulation and demodulation technology of CDMA by comparing several technologies.
    本文主要研究了CDMA技术中调制解调方法的选取与比较。
短句来源
    Firstly, the paper studies the operating principle of phase modulator and intensity modulator, and the modulation/demodulation methods of DPSK and DQPSK, and then presents a method of deducing the logical expressions of the DQPSK precoder.
    首先本文讨论了相位调制器和强度调制器的工作原理,以及DPSK和DQPSK的详细调制解调方法,提出了一种推导DQPSK预编码器逻辑表达式的方法;
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A pulse width modulation and demodulation method based on natural samples is discussed. Spectral properties of PWM pulse.trains is analysed and a plan of direct mutiplexing transmission for RF television signals in CATV systems is introduced. presenting advantages of the plan and comparing several analog modulation with pluse width modulation, the article considers that PWM modulation technology be very attractive and potentially applicable in analog signals multiplesing transmission. Therefore,it will be widely...

A pulse width modulation and demodulation method based on natural samples is discussed. Spectral properties of PWM pulse.trains is analysed and a plan of direct mutiplexing transmission for RF television signals in CATV systems is introduced. presenting advantages of the plan and comparing several analog modulation with pluse width modulation, the article considers that PWM modulation technology be very attractive and potentially applicable in analog signals multiplesing transmission. Therefore,it will be widely used in intergrate service network of the future.

本文对脉冲宽度的调制、解调方法和其频谱进行了分析,提出了一种在CATV系统中用于直接传输射频电视信号的多路复用系统方案,并通过对其优点的论述和与其它几种模拟调制方式的比较,认为PWM调制技术在传输多路模拟信号方面是非常有吸引力和潜在应用能力的,它在未来将有广泛的用途。

This paper introduces the characteristics of GMSK modulation, discusses the relationship between Gaussian Filter BT value and the performances of GMSK modulation. It introduces a method that uses FX489 to complete GMSK modulation and demodulation,it's performances is analyzed. Power spectrum of GMSK and transmit eye patterns and bit error rate performance is given.

本文介绍了GMSK调制方式的特点,给出了高斯滤波器BT值与GMSK调制方式性能的关系。提出了一种利用FX489实现GMSK调制解调的方法,分析了其性能。给出了GMSK信号的功率谱曲线,传输眼图与误比特率性能。

The characteristic of the electric power data transmission and the error control techniques which can improve the credibility of the data transmission are first introduced. The trellis -code modulation technique is discussed in detail. The design principle of the error-correction encoding and the modulation technique are expounded. The diffuse convolution codes, Viterbi decoding and its error correction capability are analyzed. It is showed by experiment, that not only the random error hot also the burst...

The characteristic of the electric power data transmission and the error control techniques which can improve the credibility of the data transmission are first introduced. The trellis -code modulation technique is discussed in detail. The design principle of the error-correction encoding and the modulation technique are expounded. The diffuse convolution codes, Viterbi decoding and its error correction capability are analyzed. It is showed by experiment, that not only the random error hot also the burst error can be corrected by using the diffuse convolution codes. The QAM modulation based on single chip computer and A/D converter is finally presented.

介绍了电力数据传输的特点以及常见的差错控制方法。详细论述了基于调制技术与编码技术的网格编码(TCM)。分析了在电力数据传输时,纠错码和调制方式的选取原则和扩散卷积码的编码、Viterbi译码及其纠错性能。实验证明,该卷积码不仅可以纠正随机错误,而且还可以纠正突发错误,非常适合电力传输。最后分析了采用单片机和 D/A变换器实现的QAM调制解调方法

 
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