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12下载:
本程序用于完成BPSK、QPSK、pi/4QPSK、OQPSK、8PSK、16QAM、32QAM、64QAM和128QAM的调制仿真。并可任意扩展到MPSK和MQAM。程序分成四个部分,fir.m对基带码元序列进行脉冲成型,可选矩形脉冲,升余弦脉冲和平方根升余弦脉冲; modal.m 为主程序,完成岁各种信号的基带星座图映射、脉冲成型和调制;pi4QPSK.m 为pi/4QPSK信号的星座图映射程序;test1.m给出一个简单的频谱显示测试。,This procedure for the com
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平方根升余弦滚降数字滤波器的设计 很不错的文章-Square root raised cosine roll-off digital filter design
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Modify the Gray-coded modulation example (COMMDOC_GRAY)
so that it uses a pair of square root raised cosine filters
to perform pulse shaping and matched filtering at the
transmitter and receiver, respectively.-Modify the Gray-coded modulation e
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有关MPSK调制,传输模型。成型脉冲分为矩形,升余弦脉冲,平方根升余弦脉冲。M的值为2,4和8.所加噪声是高斯白噪声。-Of the MPSK modulation, transmission model. Pulse shape is divided into rectangular, raised cosine pulse, the square root raised cosine pulse. The value of M for 2,4 and 8. The increase in n
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本程序用于完成BPSK、QPSK、8PSK的调制仿真。并可任意扩展到MPSK和MQAM。程序分成三个部分:phase.m对基带码元序列进行脉冲成型,可选矩形脉冲,升余弦脉冲和平方根升余弦脉冲; model.m 为主程序,完成各种信号的基带星座图映射、脉冲成型和调制; command.m给出一个简单的频谱显示测试。-This procedure for the completion of BPSK, QPSK, 8PSK modulation simulation. Arbitrary and m
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ADI中平方根升余弦滤波器的DSP实现
2中方法-ADI in the square root raised cosine filter of the DSP method to achieve 2
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平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲-Square Root Raised Cosine Square Root Raised Cosine pulse Pulse Pulse square root raised cosine square root raised cosine square root raised cosine pulse Pulse Pulse square root raised cosine square root raised cos
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In this simulink model , 16-QAM modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is m
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In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal
is demodulated and given to the detector where it is mat
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仿真滚降系数为0.22的平方根升余弦滤波器.m-Simulation of roll-off factor of 0.22 square root raised cosine filter. M
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平方根升余弦脉冲实例。两个SQRC滤波器的级联组合就成为一个零ISI的滤波器。此程序用于获得平方根升余弦脉冲。-Square root raised cosine pulse instance. Cascade combination of the two SQRC filters to filter a zero ISI. This procedure used to obtain the square root raised cosine pulse.
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数字通信系统中, 基带信号的频谱一般较宽, 因此
传递前需对信号进行成形处理, 以改善其频谱特性,使
得在消除码间干扰与达到最佳检测接收的前提下,提高信道的频带利用率。目前,数字系统中常使用的波形成形滤波器有平方根升余弦滤波器、 高斯滤波器等。设计方法有卷积法或查表法, 其中: 卷积法的实现,需要消耗大量的乘法器与加法器,以构成具有一定延时的流水线结构。为降低硬件消耗,文献提出了一种分-FPGA Implementation of Square Root Raised Cosine Pu
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根升余弦基带成形滤波器的设计及其DSP实现.最后利用系数对称特性,在某软件无线电电台系统的DSP 芯片中编程,
实现均方根升余弦滤波器的成形滤波算法-First this essay introduces baseband shaped filter theory and
requirements of an SDR system on shaped filtering. And, the author
introduces various realization methods
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采用MATLAB编程,产生一个16QAM基带信号,并进行实数倍插值计算。要求符号率为1 MSymbol/s,采用均方根升余弦滤波成形,滚降系数=0.5。产生{…1,0,1,1,…}的伪随机序列,经过映射、4倍成形滤波、FIR半带滤波、实数倍内插滤波,最后输出4.315倍时域/频域响应。给出信号序列经过各级滤波的时域、频域结果-Using MATLAB programming, resulting in a 16QAM baseband signal, and the real multiples
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用matlab编写了一个,信源产生经过BPSK调制以及根号升余弦滤波器后再加上载波最后将波形图输出的程序-Using matlab prepared a source after BPSK modulation, as well as the square root raised cosine filter and then with the carrier waveform graph output of the program
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仿真练习(第六次刘课件中有关于噪声的添加方法)
? 编写一个含QAM传输的发送和接收模块
? 分别采用复基带仿真和实带通仿真两种形式
? 复基带仿真时过采样率为4倍,实带通仿真时过采样率为20倍, 实带通仿真时, 载波频率为符号率的4倍
? 发端采用滚降系数0.5的根号升余弦滤波器
? 画出Eb/N0=15dB时的接收波形(收滤波前),取100个采样
? 画出发端输出的眼图和收端过匹配滤波后的眼图(画眼图时不加噪声)
? 统计
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Analysis and evaluation of square root raised cosine
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对双极性随机序列二进制数字基带信号,采用开方升余弦滚降波形、矩形脉冲、半波正弦在白噪声条件下的最优(匹配滤波器)接收程序。考察码间串扰和白噪声共同作用引发的误码,画出误码率曲线;设计均衡器画出误码率曲线。-Bipolar random sequence of binary digital baseband signal, using the square root raised cosine wave, rectangular pulse, half sine wave white noise
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主要包括升余弦脉冲滤波器、平方根升余弦滤波器、 高斯滤波器(It mainly consists of raised cosine pulse filter, square root raised cosine filter and Gauss filter)
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