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BPSK Transmitter
- The basic parts of the BFSK transmitter are the preamble and the data input circuit. The preamble sequence is positioned in front of each packet of 122 bits for a total of 128 bits packet. The main purpose of the preamble is to facilitate the recepti
IS-95/CDMA2000基带成形滤波器的实现
- IS-95/CDMA2000基带成形滤波器的实现 IS-95滤波器的实现： 本次设计采用转置型结构，并用展开技术将字串行架构转换成字并行处理架构，从而提高运行的速度。本次设计中采用展开因子J=4的展开转换技术。设输入数据为filter_in，输出数据为filter_out，则其展开因子J=4的并行处理系统如下图所示 ,IS-95/CDMA2000 base-band filter shaping to achieve IS-95 filter to achieve: the desig
my_2bpsk
- my_2bpsk.rar文件包含了一个m文件和一个低通滤波器数据文件，实现的数字通信系统的升余弦基带成型，bpsk数字调制，以及高斯白噪声、接收端相干解调系统处理的各个阶段，并用plot语句画出了相关波形,对于理解数字通信系统有很大的好处。-my_2bpsk.rar file contains an m file and a low-pass filter data file, to achieve the digital communication system raised cosine b
psf_3gpp
- Pulse shaping filters are used at the heart of many modern data transmission systems (e.g. mobile phones, HDTV) to keep a signal in an allotted bandwidth, maximize its data transmission rate and minimize transmission errors. Raised cosine filters for
onec
- 单信道的发射接收机 包含匹配滤波 脉冲成型 误码率和理论值-The emission of the single-channel receiver includes a matched filter pulse shaping BER and the theoretical value
comm_eg_const
- Plotting Gray-coded Signal Constellations and Pulse Shaping Using a Raised Cosine Filter-Plotting Gray-coded Signal Constellations and Pulse Shaping Using a Raised Cosine Filter
Nuclear-pulse-shaped-circuit-
- Sallen-Key filter was used in shaping of nuclear pulses and, with few stages of filters it was possible to reach the Gaussian waveform output. The characteristics of the shaped circuit base in Sallen-Key low pass filter were simulated and the opt
sqrt_rcosine
- 对原始码元序列进行基带成型，采用的是根升余弦滚降滤波器，可以更改参数变成升余弦滚降滤波器-Baseband shaping the source sequence, using root raised cosine roll-off filter, you can change the parameters into a raised cosine roll-off filter
cdma_fir
- 模拟了高斯白噪声通过IS-95基带脉冲成形FIR滤波器的过程。绘制了FIR滤波器的频响曲线，噪声输入前与输出后的波形与功率谱-Simulated Gaussian white noise through the IS-95 baseband pulse shaping FIR filter. Drawn FIR filter frequency response curve, noise input and output waveform and power spectrum
maichong
- 脉冲成形，信号通过升余弦滤波器将信号变换成脉冲波-Pulse shaping, the signal passes through the filter cosine wave signal is converted into a pulse
Ber-with-matched-filtering
- 用匹配滤波实现误比特率曲线。在发射端使用脉冲成型，在接收端使用匹配滤波所构成的最佳接收机。-optimal receiver structure when pulse shaping is used at the transmitter，The receiver structure is also called as matched filter.
FIR_lowpass
- 一个FIR低通滤波器的fpga源码，可以应用于通信调制成型滤波器参考代码-A FIR low-pass filter in the fpga source code, can be used in the communication reference code modulation shaping filter
interpolate4
- 调制信号后4倍内插的verilog代码，用于基带成型滤波器输入数据-4 times after modulation signal interpolation verilog code, used to baseband shaping filter input data
iterajowwaverfallend
- 用MATLAB语言根据成形滤波器法实现通信环境中的瑞利信道的仿真-MATLAB language according to the shaping filter method to realize the communication environment in the Rayleigh channel simulation
73908968
- 用MATLAB语言根据成形滤波器法实现通信环境中的瑞利信道的仿真-MATLAB language according to the shaping filter method to realize the communication environment in the Rayleigh channel simulation
Epsk
- 完整8psk调制，成型滤波，加噪匹配滤波，解调映射(Complete 8PSK modulation, shaping filter, add noise, matched filter, demodulation mapping)
Baseband Pulse-shaping Digital Filter
- 介绍了采用matlab设计基带脉冲成形数字滤波器的基本原理和设计方法，以及在定点DSP上的实现。(The basic principle and design method of baseband pulse shaping digital filter based on MATLAB and the implementation on fixed-point DSP are introduced.)
NO3ASK4
- 分别产生符合下列要求的眼图，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)： 1) 无噪声和信噪比为20dB的加性高斯白噪声 2) 升余弦滚降系数分别为0.5和1 3) 受到码间串扰影响，信道参数可设为：ch=[0.9806; -0.1961]；(In accordance with the following requirements of eye respectively, the input modulation mod
7
- 利用 LABVIEW 和 NI USRP 数字通信实验平台，实践 4-QAM 数字调制器和脉冲成型滤波器的原型设计和性能评测。 USRP需自己提供。(The prototype design and performance evaluation of 4-QAM digital modulator and pulse shaping filter are implemented on the experimental platform of LABVIEW and NI USRP digital
16QAM调制解调
- % QAMModem.m程序清单 % 仿真4比特原始数据与星座图的编码映射过程； % 完成16QAM信号的调制解调； % 基带信号符号速率 ps ＝1Mbps； % 成形滤波器的滚降因子 a=0.8； % 载波信号频率fc=2MHz ； % 采样频率 Fs=8MHz ； % 绘制16QAM信号的频谱及时域波形； % 采用相干解调法仿真其解调过程； % 绘制解调前后的基带信号时域波形； % 将原始基带数据、QAM已调数据、滤波器系数写入相应的文本文件中。 clc;(%Qamm