radar_matlab2018

天线组阵中基于循环相关的BPSK信号合成方法研究(Antenna array study group cycle related BPSK signal synthesis method based on)

信道估计，有mmse 和ls估计，并有解释(Channel estimation, there are MMSE and LS estimates, and there are explanations)

OQAM per processing ..........

用于信捷PLC与Labview之间的通信，可以作为学习的初版(Used for the communication between Sinjie PLC and Labview, it can be used as the first edition of learning.)

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.)

A Comparison Between the Centralized and Distributed Approaches for Spectrum Management

This document describes about the digital modulation techniques especially about spread spectrum.

有关4QAM，16QAM，64QAM，DQPSK的调制解调的(The 4QAM, 16QAM, 64QAM, DQPSK modulation and Demodulation)

关于移动通信的跳频，直接扩频和CDMA的matlab算法(Matlab algorithm for frequency hopping, direct spread spectrum and CDMA in mobile communication)

正弦调频信号的时域 频域 模糊度函数的设计(Time domain sinusoidal FM signal frequency-domain ambiguity function design)