hfssapi

cohen类信号的双线性信号时频分析，page分布，该函数用于计算离散时间信号X的page分布，或良信号的互page表示。(cohen category signals bilinear time-frequency analysis, page distribution, the function used to calculate the discrete-time signal X s page distribution, or good signal that each page.)

说明：  CDMA的matlab实现，程序中介绍了CDMA实现的算法以及实现的结果(CDMA, matlab implementation, the program introduces CDMA implementation algorithm and the results achieved)

matlab编程Newmark-β单自由度体系动力响应(Matlab programming Newmark- beta single degree of freedom system dynamic response)

license plate recognition

说明：  有限元Matlab程序，两网格并行程序，Morley程序(Finite Element Matlab program, the two grid parallel program, Morley program)

正弦波脉宽调制技术（SPWM）三项pwm逆变器双极性SPWM波形的产生(Sinusoidal pulse width modulation (SPWM) three pwm inverter bipolar SPWM waveform generation)

逆变器具有灵活、高效的特点，是新能源并网的主要接口。当多个逆变器连接到电网的同一个公共连接点时，逆变器非理想的电源特性，使得逆变器之间、逆变器与电网之间存在的谐波交互作用可能引发谐振， 使系统出现过电压、 过电流现象影响电网的电能质量，甚至威胁系统的安全稳定运行(Inverter is flexible and efficient, and it is the main interface of new energy integration. When multiple inverters are connected to the same common connection point of the power grid, the inverter is not ideal. The harmonic interaction between the inverters, the inverter and the grid may cause resonance, which causes the overvoltage and overcurrent to affect the power quality of the power grid and even threatens the safety of the system. stable operation)

Tracking control of a mobile robot with kinematic and dynamic constraints

RAKE接收机，一种能分离多径信号并有效合并多径信号能量的最终接收机。(RAKE receiver, a multipath signals are separated and eventually the receiver effectively combined multipath signal energy.)

reduction to papr in ofdm with Peak Windowing: The basic idea of peak windowing is to multiply the envelope of OFDM signal with a weighting function . Therefore, ~xE (t)= xE (t) f (t) where XE(t) =[x(t)] The weighting function given by: f (t)= 1-Σ α .w(t- t ) t-t w(t) : is the window function. t : denotes the position of a local maximum of the envelop xE(t) . α : attenuation constant . When the amplitude of envelop amplitude of the OFDM signal exceeds a threshold, a window function is applied to the envelop of the OFDM signal to eliminate the peak amplitude. windowing results in a smooth signal. Hanning window function will be used for w(t) As a matter of fact , other windows such as cosine, hamming and Kaiser may be employed.