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DSP_DESIGN
- 基于C54X的DSP载波数字解调系统的设计，该硬件系统工作稳定，可以实现信号的实时处理，如可以实现语音信号的实时处理，通信信号的实时调制解调灯。在此基础上，为了验证DSP芯片的高性能，在此硬件平台上实现了两个具体应用：一个是高性能的FIR数字滤波器；一个是2FSK数字解调算法的实现。-C54X DSP-based carrier digital demodulation system design, the hardware system stability, can achieve the r
GMSK
- GMSK是高斯滤波的最小频移键控的简称，基本的工作原理是将基带信号先经过高斯滤波器成形，再进行最小频移键控(MSK)调制。由于成形后的高斯脉冲包络无陡峭边沿，亦无拐点，因此频谱特性优于MSK信号的频谱特性。-GMSK Gaussian filter is the smallest FSK abbreviation, the basic working principle is to base-band signal to pass Gaussian filter shape, and then
extended_reciever
- Bit Error Rate analysis of an Extended Receiver for Rectangular PAM. The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Si
gmsk
- ：为了论证高斯最小频移键控(GMSK)信号在时域和频域的相互关系，分析了GMSK信 号调制原理和滤波器传递函数，建立了GMSK调制和解调模型。-: In order to demonstrate Gaussian Minimum Shift Keying (GMSK) signal in time domain and frequency domain, the relationship between the analysis of GMSK signal modulation princ
123
- 本文介绍了基于可控电流源的高精度高细分数步进电机细分驱动方法，采用 PwM(脉冲宽度调制)和5阶巴特沃斯低通滤波器实现了双14位精度较高的DAc，用 于控制精密可控电流源的电流输出，使得励磁线圈中流经的电流为稳定的直流，实现 了步进电机低噪声，高稳定度的细分驱动运行。 -This article describes the controlled current source based on the subdivision number of high precision ste
FSK
- 设计一个2FSK数字调制系统，要求： （1）设计出规定的数字通信系统的结构； （2）根据通信原理，设计出各个模块的参数（例如码速率，滤波器的截止 频率等）； （3）用Matlab或SystemView 实现该数字通信系统； （4）观察仿真并进行波形分析； （5）系统的性能评价。 -Design a digital modulation system 2FSK require: (1) design a digital communication system
2DPSK
- 设计一个2DPSK数字调制系统，要求： （1）设计出规定的数字通信系统的结构； （2）根据通信原理，设计出各个模块的参数（例如码速率，滤波器的截止频率等）； （3）用Matlab或SystemView 实现该数字通信系统； （4）观察仿真并进行波形分析； （5）系统的性能评价。 -Design a 2DPSK digital modulation system requirements: (1) design a digital communication sys
B09025
- communication system is expected to increase the service, the quality improvement and also the capacity, using spread spectrum communication system is one of the method to fulfill that demand. This quality and capacity factor will depend on the numb
16QAM
- 讨论了"’+,- 调制时应用不同类型和参数的滤波器对系统性能的影响/针对"’+,- 的特点.采用 了存储波形累加求和法来代替一般的滤波成形.提高了调制速度/并利用其相位对称的特点将波形存储表压 缩为原容量的"0$.有效地节约了存储空间-Applications are discussed " ' +,- modulation type and parameters of different filters on the system performance/characte
Smoothing-Filter-based-Intensity-Modulation-a-spe
- Smoothing Filter-based Intensity Modulation a spectral preserve
SystemView
- 对于通信中基本的调制、解调、滤波器等等进行实际仿真-As for communications in the modulation and demodulation basic, filter, and so on for actual simulation
2fskmodanddmod
- 本文主要是利用MATLAB7.0来实现2FSK 数字调制系统解调器的设计。该设计模块包含信源调制、发送滤波器模块、信道、接受滤波器模块、解调以及信宿，并未各个模块进行相应的参数设置。在此基础上熟悉MATLAB的功能及操作，最后通过观察仿真图形进行波形分析及系统的性能评价。-This paper is to use the MATLAB7.0 to demodulator design 2FSK digital modulation system. The design module contai
yy
- 加信噪声，单边带调幅，设计波特滤波器，过滤噪声，比较经过希尔伯特变换前后的区别-Plus letter noise, single-sideband amplitude modulation design Potter filters, filter noise comparison, after the difference between before and after the Hilbert transform
foc-principle
- 空间矢量脉宽调制(SV PWM ) 技术不仅具有 线性调制范围宽、输出谐波小和易于数字化实现 的特点, 而且比常规SPWM 高15 的直流电压利 用率[ 1～ 3 ] , 因而被广泛用于变频器、U PS 、无功补 偿器、有源电力滤波器和储能系统电力变换器等 领域. 对SV PWM 常规算法和快速算法进行分析, 并证明了二者的等效性. 同时, 利用MA TLABö Sim u link 对在不同输入电压参考信号和不同零矢 量分配方式下的调制信号和逆变器输出
1100
- MSK调制，可以修改模块的信道、无线速率和功率，修改参数协议见易达讯无线模块参数设定协议。默认空中速率38.4K、信道为0信道、信道间隔为200KHz、载波基频434MHz、滤波带宽203KHz、CC1100模块发送以后进入接收模式。-MSK modulation, you can modify the module channel wireless speed and power, modify the parameters and protocols See Estar wireless m
soqpsk
- SOQPSK调制，根升余弦滤波器源代码，用于初学者的使用和学习-SOQPSK modulation,root-raise cosine filter to use and study for a new user
file
- 升余弦滤波器设计，产生眼图，输入调制方式为2PAM和4PAM，符号率为1Hz，等效信道滤波器为升余弦滚降成形滤波器(缺省滚降系数为0.5)-Raised cosine filter design, resulting in eye diagrams, input modulation for 2PAM and 4PAM, symbol rate of 1Hz, the equivalent channel filter for shaping raised cosine filter (defa
Design-And-Simulation-Of-Qpsk-Modulator-For-Optic
- We have proposed a digitally implemented QPSK system for Free-Space Optics (FSO) systems for future satellite missions. We have used a Laser source of 1550nm wavelength and data rate of 2.5Gbps.The system consists of a modulating and a demodulating b
An-Efficient-Method-for-Prefilter-Computation-for
- In advanced TDMA mobile communications systems, reduced-state equalization algorithms have to be employed because high-level modulation is used in order to improve spectral efficiency. Such equalizers have only high performance, if the overal
256-Shunt-Active-Power-Filter-under-unbalanced-ne
- This paper, focus on the study and design of a shunt active power (APF) filter for the compensation of harmonic currents and reactive power in polluted environment and under unbalanced network voltage. In APF design and control, p-q theory was often