PMSM_DTC_SVPWM

1. 关于无线信道的多普勒谱，请回答以下问题： (1) 在某些无线信道中，多普勒频移会引起无线信道输出信号的混叠。请清楚的描述产生混叠的各种原因； (2) 无线信道中的多普勒谱有一种经典谱(classic spectrum)，请解释产生这种谱形状的机理； (3) 请用S-function产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。并请回答：证明自己用计算机产生的经典谱是正确的可能方法。 (Doppler spectrum of radio channel 1, please answer the following questions (1) In some wireless channel, radio channel Doppler shift will cause the output signal aliasing. Please clearly describe aliasing for various reasons )

This code about how to draw hexagonal cell with base station and user.

自适应滤波器原理一书第五章的程序,希望对大家有所帮组,()

红外控制 51单片机开发 红外解码 以及红外控制电机的正反转(hongwai stc89c52)

说明：  无线衰落信道下的通信仿真，可以更换几种常见的衰落模型，如莱斯衰落，瑞利衰落等(Several common fading models, such as rice fading and Rayleigh fading, can be replaced in the communication simulation of wireless fading channel.)

中继系统中DF和AF两种不同中继方式下性能的比较，对于学习中继的人很好！(Comparison of DF and AF are two different relay mode performance in the relay system for the study of relay good! )

这是一个模拟枝晶生长的程序，能正常运行，实时更新图片(This is a program for simulating the growth of dendrites. It can run normally and update pictures in real time.)

用matlab开发的GPS基线解算程序学习GPS软件开发必备(The development of GPS baseline with matlab solver GPS software developers to learn essential)

对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)

基于matlab的直流斩波电路（buck电路）仿真(buck circuit simulation)