qpsk_dsp_code

可以正确仿真出FBG布拉格光纤光栅的反射光谱(The reflection spectra of FBG Bragg gratings can be simulated correctly)

说明：  我在美国公司用的CA code GPS toolbox(this is matlab toolbox I write and use in my company for simulating a CA code in GPS)

在发射端发射大时宽、带宽信号，以提高信号的速度测量精度和速度分辨力，而在接收端，将宽脉冲信号压缩为窄脉冲，以提高雷达对目标的距离分辨精度和距离分辨力。(In order to improve the speed measurement accuracy and speed resolution of the signal at the transmitter, the wide pulse signal is compressed into a narrow pulse at the receiving end to improve the range resolution and range resolution of the radar.)

DVB-T simulink simulation

11.txt为产生信道冲激响应的源码， 22.txt为各种OFDM信道估计算法的源码(11.txt for producing channel impulse response of the source, 22.txt for a variety of OFDM channel estimation algorithm for the source)

伺服电机主控制模块输入输出特性的简单模拟实现，输入目标电压及反馈的当前电压，输出对电机的控制脉冲波形(The simple simulation of the input and output characteristics of servo motor main control module, the input is target voltage and feedback is the current voltage, the output is the motor control pulse waveform)

仿真了限幅方法减小PAPR，在MATLAB环境下实现仿真(Simulation of the limiter methods to reduce PAPR, in the MATLAB environment to achieve simulation)

用于仿真多普勒频移与每条反射波以及到达角之间的关系,可以自行修改参数得到更多仿真结果,MATLAB2009A上运行通过(For the simulation of Doppler frequency shift and arrival angle of each reflected wave, as well as the relationship between, you can modify the parameters of its own to get more simulation results, MATLAB2009A run through the)

SMS短消息传输系统的程序代码，应用高级语言编写(SMS transfer systems)

To understand the transmission scheme for QPSK modulation. To design a simple transceiver structure operating in a noisy channel.