BLDC

OFDM系统包括OFDM系统的调制解调，IFFT及FFT变换，保护间隔的加入对系统性能的改善，以及多径干扰、高速移动对系统误码率的影响。(The OFDM system includes modulation and demodulation of the OFDM system, IFFT and FFT transformation, the improvement of the protection interval to the system performance, and the influence of multipath interference and high-speed mobile on the system BER.)

说明：  运输问题的解,解决的双层规划的问题,up是上层文件(Transport of the solution, to resolve the issue of bi-level programming, up the upper paper)

进行D2D小区模型建立，并进行D2D链路，蜂窝链路的选择(D2D cell model establishment, and D2D links, cellular link selection)

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

一个dsp的实用程序 非常好 大家快来下啊(Dsp utility of a very good under all ah Come)

说明：  通过蒙特卡洛模拟电动汽车（EV）出行行为，有参数(Through Monte Carlo simulation of electric vehicle (EV) travel behavior, there are parameters)

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.)

这是一个利用dsp的gpio口实现不同的功能模块和数字口功能，程序完整可运行(This is a use of the GPIO DSP port to achieve different functions and functions of the function module, the program can run )

演示采样定理，时域采样，频谱周期延拓同时演示采样频率小于2*fc时，产生的混叠效应。可作函数应用(Demonstration sampling theorem, time-domain sampling, the spectrum at the same time cycle extension demonstration sampling frequency is less than 2* fc, the resulting aliasing effect. Function can be used for applications)

polyadd 代码 可以进行多项式的求值及求根的运算，主要进行多项式加法的运算(polyadd 代码)