ML-From-Scratch

ofdm system 1. applyOFDMChannel 2. calculateOFDMBER 3. generateOFDMSignal 4. getOFDMPreambleAndPilot 5. OFDMReceiver 6. OFDMSynchronizationExample 7. OFDMTransmitter 8. processOFDMScopes 9. receiveOFDMSignal

对发射端功率进行分别配，使得系统吞吐量最大化(Distribute transmitter power to maximize system throughput)

本程序是自己编写关于MFSK的仿真例子，主要用于水声定位和雷达的通讯信号编码(This procedure is to write your own about MFSK simulation examples, mainly for acoustic positioning communication and radar signal encoding)

利用数据板卡进行数据采集，利用半满的方式将模拟量转换成数字量(Data card for data acquisition, the use of half-full way to convert analog into digital)

虚拟串口工具，可以在普通电脑上虚拟成对串口，方便进行串口编程的本地调试(Virtual Serial Port Tool, which can be virtual paired serial ports on ordinary computers, facilitates the local debugging of serial port programming.)

说明：  3. 瑞利信道中的调制解调、信道估计： (1) 请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。 (2) 在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与理论误码率曲线进行对比。(3. Modulation demodulation and channel estimation in Rayleigh channel: (1) deduce the theoretical bit error rate performance of BPSK coherent demodulation in single-path Rayleigh channel, and draw the relationship curve between bit signal-to-noise ratio and bit error rate. (2) in single-path Rayleigh channel, please design a time-division guidance assisted channel estimation method, Simulink simulation, measure the bit error rate performance of BPSK, draw the relationship curve between bit SNR and bit error rate, and compare with the theoretical bit error rate curve.)

说明：  OFDM计算，调制方式为64QAM，可以对信道的信息进行估计(OFDM calculation, modulation mode is 64QAM, can estimate the channel information)

说明：  采用Jakes模型的瑞利信道仿真matlab程序(Rayleigh Channel Simulation matlab Program Using Jakes Model)

频率估计，是一种比较简单的算法，很基础，有助于初学者应用(Frequency estimation, is a relatively simple algorithm, it is based applications to help beginners )

用c语言实现fft和iir滤波器的设计。可以和matlab中的函数fft,filter等效。(used language fft and IIR filter design. Matlab can and the function fft, filter equivalent.)