lssvmTest

This document shows how to simulate point to point fiber optics link using matlab s simulink.

编程产生一组随机的0、1二进制比特序列，分别用2ASK, 2FSK, 2PSK和2DPSK四种调制方式把它们调制到一个较高的载频上，调制参数自定，请给出前8个比特所对应的时域波形。 画出上述四种信号通过高斯白噪声信道后的相干解调器和非相干解调器的原理框图，并给出判决前的观测值的数学表达式。注: 如果某些调制方式无法进行非相干解调，请给出原因。 根据题2中的观测值的数学表达式，分别编程实现判决过程，将判决结果与原数据作比较，统计出各自在不同比特信噪比 值下的误比特率 ，然后画出 与 (dB)的曲线。建议 的范围为 0dB 到10dB, 以1dB为间隔。 将上述仿真得到的误比特率曲线与各自的理论值画在同一张图上进行比较并讨论。同时， 比较和讨论不同调制与解调方式的差错性能区别。(emulate 2ASK, 2FSK, 2PSK and 2DPSK using matlab)

The remarkable advance in hydraulic and electrohydraulic power systems resulted in producing control valves of very short settling time. The rapid closure of hydraulic transmission lines leads to severe pressure surge. Thattached Simulink file is developed to evaluate the applicability of oleo-pneumatic accumulators for the protection against this phenomenon. A lumped parameter model was developed for the transmission line, assuming four lumps, considering the effect of line resistance, inertia and capacitance.

说明：  对一幅图像的进行小波包分解，然后提取每一层的系数(image of a pair of wavelet packet decomposition, and then extract the coefficient of each layer)

说明：  啁啾光纤光栅的程序，反射谱情形，很不错。(Chirped fiber grating process, reflection spectra of the situation, very good.)

利用追赶法求解三对角线性方程组，matlab程序代码(chasing method)

小车位移的模拟仿真实验.其中pidoff.mdl 为无pid的时候小车的位移仿真曲线 pidon.mdl 为有pid的时候小车的位移仿真曲线(Trolley displacement simulation experiment)

this code is for speech recognition

Rayleigh 信道仿真模型 参考"Autoregressive modeling for fading channel simulation", IEEE Transaction on Wireless Communications, July 2005. (Rayleigh channel simulation model reference Autoregressive modeling for fading channel simulation , IEEE Transaction on Wireless Communications, July 2005.)

说明：  用Matlab实现主成分分析（PCA)算法.(Principal component analysis using Matlab implementation (PCA) algorithm.)