Design of digital quadrate modulation based on DSP and DAC;
基于DSP与DAC的数字正交调制器的设计
The hardware achieving principle and the method of the digital quadrate modulator was presented,and the eight-channel parallel digital quadrate modulation system based on DDS was developed.
基于DDS的数字正交调制方案以AD9857为核心实现。
The paper analyzes the design feasibility of this generator based on the software radio theories,and confirms that the base band data can be converted to the intermediate frequency modulated signal at a higher rate after the interpolation and the digital quadrature modulation.
介绍了一种软硬件结合的中频直接序列扩频信号模拟器的设计与实现方法,并对模拟器设计的可行性进行了分析,得出了基带数据经过内插滤波和数字正交调制后,能够获得比基带数据率更高的中频调制信号的结论。
Optional spectrum signal reconstruction, digital quadrature modulation and the fast algorithms are discussed.
任意频谱信号产生方法是将功率谱转换为矢量频谱,再经傅立叶反变换,对得到的多个时域数据序列进行加窗、搭接得到一个长的时间序列,用该序列去逼近任意频谱信号对应的时域无限长序列,最后经过数字正交调制重构出任意频谱信号。
Based on the principle of digital orthogonal modulation,the generation question of wide-band signal is factually identical with how to generate base-band signal with high sampling in time domain.
在数字正交调制原理的基础上,宽带信号的产生问题实际上转换为如何得到高采样率下的时域基带信号。
Based on digital orthogonal modulation theory, the algorithm of digital orthogonal modulation of multi-carrier signal is proposed in the paper.
根据数字正交调制理论,推导了多载波信号数字正交调制的算法,提出了一种简单实用的多通道软件无线电发射机数学模型,并给出梳状谱和离散谱信号产生的实例。
Design of Digital Quadrature Modulator Based on AD9957
基于AD9957的数字正交调制器设计
Design of IF Sampling and Digital Quadrature Demodulator in Digital Receivers;
数字接收机中频采样数字正交解调器的研制
Research on Modulation Methods in Digital Communications Based on Non-orthogonal Ideas
基于非正交思想的数字通信调制方法的研究
Research of OFDM Modulation and Demodulation System Based DAB;
数字音频广播正交频分复用调制/解调系统的研究
Digital switches are now being implemented to accommodate these modulation types.
目前正在安装数字交换机以使前述两种调制方法得以实现。
Simulation of digital sensor signal QAM technology based on communication channel
基于通信信道的数字传感信号正交幅度调制技术仿真研究
The Design and Realization of Digital Quadrature Demodulator Based on DSP
基于DSP的数字正交解调器的设计与实现
The principle of pure digital PWM of the three-phase AC motor is analyzed.
分析了三相交流电机全数字脉宽调制的原理.
Study of Digital AC Variable Frequency Speed Regulation Control Device;
全数字交流牵引变频调速控制装置的研究
digital delta modem
数字式增量调制解调器
Multimodulus blind equalization algorithm for cross quadrature amplitude modulation signals
适用于十字型正交幅度调制信号的多模盲均衡算法
colour multiplexing
彩色副载频正交调制
Nonsinusoidal Orthogonal Modulation in Time Domain Based on Orthogonal Pulses
基于正交脉冲的非正弦时域正交调制方法
DDC Technology Based on Digital Orthogonal Mixing
基于正交混频的数字下变频技术研究
Research of Digital Watermarking Based on a Set of Nosinusoidal Family Orthogonal Transforms
基于非正弦类正交变换的数字水印研究
Bytes received from modem per second.
每秒从调制解调器接收的字节数。
Ich habe die Modulation und Demodulation des analogen und digitalen Signal gelernt.
我学了模拟和数字信号的调制与解调。
The Fully Digital MSK Modulation-Demodulation System Based on DSP;
基于DSP的全数字MSK调制解调系统
