understanding-LTE-with-MATLAB

说明：  主控mcu与profinet进行SPI通讯的例子程序(An example program of SPI communication between master control MCU and PROFINET)

ofdm papr降低pts技术（三种分割法源代码）(ofdm papr)

wcdma里面扩频所需的0号扰码源文件,并产生S行曲线,实现超前滞后门位同步()

说明：  conversion of a matrix into lower triangular matrix

空间无线信道建模程序matlab，考虑了多径延迟，多普勒效应，信号的角度扩展（拉普拉斯分布），MIMO，可以产生MIMO信道矩阵。(Spatial channel modeling procedures matlab, taking into account multi-path delay, Doppler effect, the signal point of view the expansion of (Laplace distribution), MIMO, can generate MIMO channel matrix.)

说明：  在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)

频分复用信号的生成以及演示，与英文工具书匹配，很好用！(FDM signal generation)

说明：  mimo 多输入多输出 空时自适应处理 STAP 阵列信号处理 Array signal processing(Array signal processing,space time adaptive processing MIMO-STAP SIMULATION)

kd树，matlab源码 kd树，matlab源码(kdtree wiritten in matlab)

说明：  DS-CDMA的MMSE算法程序，给出了不同信噪比下的BER性能比仿真曲线。(DS-CDMA of the MMSE algorithm program are given under different signal to noise ratio curve of BER performance than emulation.)