niudunfachaoliu

位同步例程源代码，gardener算法的(Bit synchronization routines source code, gardener algorithm)

Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a

利用遗传算法训练神经网络的matlab程序，可避免神经网络训练的局部最优问题。(The use of genetic algorithm matlab neural network training procedure can avoid the neural network training problem of local optimum.)

说明：  modeling of induction motor

matlab仿真工具（simulink）的命令集(the command ofmatlab simulink)

合成孔径雷达SaR仿真--RD,CS(SaR synthetic aperture radar simulation-- RD, CS )

This model demonstrates a DC-AC converter. 3 leg Mosfet operated inverter is constructed . Can be used to demonstrate the relationship of input DC, output voltage, modulation index , filter selection and switching frequency. 3rd harmonic injection features

一种实现TDOA定位的算法源代码，chan算法。matlab程序，希望采纳。(An implementation TDOA location algorithm source code, chan algorithm. matlab program, hope to adopt.)

此函数用于产生脉冲超宽带系统的训练序列的波形。输出参数有三个：bits--发送的数据,stx--发送的信号,ref--参考信号 发送端调制方式为TH-PAM(The emerging ultra-wideband (UWB) system offers a great potential for high data rate wireless multimedia applications of the home entertainment and industry, as well as for low data rate sensor networks involving low power devices~cite{paragraph1}. One of the most acute challenges in realizing these potentials of the UWB systems is the timing acquisition. Timing errors as small as fractions of a nanosecond could seriously degrade the system performance~cite{paragraph21}. The difficulty in UWB synchronization arises from UWB signals being the ultrashort low-duty-cycle pulses operating at very low power density.)

Step-function非自治系统周期系统的数值模拟的解曲线和相空间轨线(Step-function)