sd模型

Radio Resource Management and Interference Analysis

实现完整的4CPM(h=1/2)调制解调程序，包括消息序列生成，串并转换，升抽样成形滤波，数字上变频，多项式非线性效应，AWGN信道，到接收端数字下变频，降采样，匹配滤波，接收端基带信号星座图。(Message sequence generation, serial-parallel conversion, up sampling shaping filter, digital upconversion, polynomial nonlinear effects, AWGN channel, to the receiver digital down-conversion, down-sampling, the matched filter, the receiving end the baseband signal constellation.)

说明：  根据卫星EIRP值、接收系统G/T值等参数仿真了卫星通信的上下行及总链路预算的matlab程序 及论文《卫星传输链路的计算与应用》(uplink and downlink margin budget)

说明：  对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)

说明：  基于均匀线阵的强干扰条件下弱信号的DOA估计，采用MUSIC算法(Based on the DOA estimation of weak signal under strong interference of uniform linear array, music algorithm is adopted)

说明：  5G PDSCH信道吞吐量matlab仿真，包括PDSCH信道产生及解调(NewRadioPDSCHThroughputExample)

BPSK信号调制过程以及误码率的计算，最后结果可以用曲线图形输出(sfazvassfasczxcasafavasvasvxzxv)

说明：  MSK信号的调制与解调，根据书上的代码进行了修改，非常详细(Modulation and demodulation of MSK signal)

说明：  生成2KHz和8KHz的混合信号,使该信号通过上述滤波器,观察滤波前后的波形变化和频谱分布情况, 在改信号中加入高斯白噪声,(The mixed signal of 2KHz and 8KHz is generated so that the signal passes the above filter, the waveform change and spectrum distribution before and after filtering are observed, and Gao Si white noise is added to the modified signal.)

把从光谱仪串口传输过来的数据分解为各自的成分数据(Decomposition of the data over the serial transmission from the spectrometer data for each ingredient)