HJQE2

信道估计的大量参考文献，尤其是对于水声信道的估计，便于下载(Channel estimation of a large number of references, especially for the estimate of the underwater acoustic channel, easy to download)

观察者模式实现各模块之间的异步通讯。模拟MFC消息(message router)

This toolbox is used to develop software defined radio for GPS receiver

时频域联合反射法（TFDR）故障测距原理及相关论文 (Joint time-frequency domain reflectometry (TFDR) fault location principle and related papers)

恒模算法(CMA)是实际中应用最广的一种盲均衡算法,这里主要时提出了改进的lc-cma算法的源程序代码(Constant modulus algorithm (CMA) is one of the most widely used blind equalization algorithms in practice. In this paper, the source code of the improved lc-cma algorithm is proposed.)

说明：  基于matlab产生光正交码，里面有几种码，象光正交码等。(Based on MATLAB to generate optical orthogonal code, there are several codes, such as optical orthogonal code.)

说明：  空间平滑music处理相干信号，相干信号的常用处理方法(Spatial smooth music processing coherent signal, coherent signal processing method)

用于can通讯的 can 总线协议iso 15765的中文翻译，虽然有些地方不大准确，但可以对照英文一起看，方便英文不大好的同学(Communication can be used can bus protocol iso 15765 Chinese translation, although in some places is not accurate, but can be controlled in conjunction with the English, to facilitate the students English is not good)

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.)

技术文档：OFDM联合极大似然法，符号和载波频偏估计，利用循环前缀的冗余信息实现ML估计，不需额外插入导频，其频率估计用于跟踪模式，时间估计用于捕获模式。(OFDM ML estimator for time and frequency)