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QPSK信号的加噪声信号调制和星座图绘制-QPSK signal plus noise signal modulation and constellation mapping
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16QAM调制解调原码,包括星座图映射,信道噪声,及解码-16QAM modulation source, including the mapping constellation diagram, channel noise, and decoding
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QAM是一种矢量调制,将输入比特先映射(一般采用格雷码)到一个复平面(星座)上,形成复数调制符号,然后将符号的I、Q分量(对应复平面的实部和虚部,也就是水平和垂直方向)采用幅度调制,分别对应调制在相互正交(时域正交)的两个载波(cos wt和sin wt)上-QAM is a modulation vector, the first mapping the input bits (Gray code commonly used) to a complex plane (constellation
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一个非常完整的数字基带传输系统实现,包括信源产生,信道编码,交织,星座映射和基带成型,包括了完整的接收机设计,能够在此基础上做各种仿真,注释丰富,接口完善,极易扩展。-A very complete digital baseband transmission system implementation, including source generation, channel coding, interleaving, constellation mapping and baseband sha
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这个程序是有关通信系统的仿真,调制、解调、加噪、滤波以及统计误码率,和星座图的绘制,包含很多个独立的小函数以及一个主函数!-This program is a simulation of the communication system , modulation, demodulation , adding noise, filtering and statistical BER, and constellation mapping, contains many independent func
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LTE上行链路使用的DFT-S-OFDM系统的仿真,其中包括QPSK星座映射、串并转换、N点DFT、子载波映射等。-LTE uplink using the DFT-S-OFDM system simulation, including QPSK constellation mapping, string and conversion, N-point DFT, subcarrier mapping, etc..
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实现16QAM完整的调制解调系统,包括基带信号串并转换,星座图映射,升抽样成形滤波,升采样半带滤波,数字上变频,功放的多项式非线性效应,加性高斯白噪声信道,接收端下变频,降采样,匹配滤波,绘制接收端星座图。-16QAM modulation and demodulation realize the complete system, including the baseband signal string and conversion, constellation mapping, samplin
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实现完整的通信链路仿真,包含星座图、符号映射、ofdm、信道衰落、调制解调-Achieve complete communication link simulation, including constellation, symbol mapping, ofdm, channel fading, modulation and demodulation
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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;
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。-Simulation of 4-bit coded mapping process raw data constellation complete 16QAM modulation and demodulation signal
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qpsk信号二进制编码,星座图,散点图绘制及解调-QPSK signal coding, constellation mapping and demodulation
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(1)产生N个服从随机分布的随机数,重复M次运算,总计算量为M*N个点 (2)选定生成矩阵,进行信道编码 (3)进行双极性映射,根据不同信噪比加入高斯噪声(4)判决统计误码率(5)使用最小汉明距离译码并统计误码率(6)绘制星座图和误码率曲线图((1) N random number random distribution, repeated M times of operation, the total amount of computation for M*N points (2) selec
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Inter modulation (SM), as a novel multi antenna transmission scheme, creates a mapping relationship between input bits and transmit antenna ordinal numbers, which is used to carry certain transmission information. However, the scheme maps the sending
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