2018

说明：  Log4net.dll是著名的Apache软件为.net framework 2框架准备的支持库，方便在不同的平台上得到功能支持。(Log4net. DLL is a support library prepared by Apache software for.NET Framework 2. It is convenient to get functional support on different platforms.)

这是外汇活动中的一种 可以从多种货币的汇率差异中,获得利润(This is one of the foreign exchange activities that can be profited from the exchange rate differences of multiple currencies.)

说明：  详解莱斯信道与瑞利衰落信道，并将其对比，画出图形，便于理解(Rician channel and Rayleigh fading channel are explained in detail and compared Draw a figure, easy to understand)

6e协议中移动WiMAX的AMC方案，仿真UGS业务在不同到达率下的吞吐率，丢包率、仿真时间内总能耗、千比特能量消耗(6e protocol in mobile WiMAX AMC scheme)

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.)

mini2440上qtopia应用程序开发步骤(arm-qtopia版本)(mini2440 steps on the qtopia application development (arm-qtopia version))

说明：  C++开发104协议，支持主从站。支持多客户端连接(C++ develops 104 protocol to support master and slave stations. Support multi-client connection)

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.)

重点研究了全数字QAM接收机中的两个关键技术——符号同步和信道盲均衡。研究Gardner定时误差检测算法，盲均衡方面，重点研究了CMA及其改进算法，采用MMA算法和DD-LMS算法联合均衡 (Focuses on the all-digital QAM receiver in the two key technologies- the symbol synchronization and channel blind equalization. Research Gardner timing error detection algorithm, blind equalization, the focus of the CMA and its improved algorithm, using the MMA algorithm and the DD-LMS algorithm for joint equalization)

simulink file for FSK Modulation and Demodulation