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利用matlab 和 差分方法求解非线性方程(Difference Methods Partial Differential Equations)

dw to xls 这个是用于pb9下的,已经修改过，不会弹出demo。 pb8的。 pb8设置有点麻烦，因为pb9是可以直接把(dw to xls)

对图像进行JPEG压缩编码和解码，用matlab实现(JPEG compression of image encoding and decoding, using matlab implementation)

Single Carrier FDMA的matlab仿真程序。程序清晰明了，解释详尽。(Single Carrier FDMA the matlab simulation program. Procedures clear, detailed explanation.)

用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。 ( When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate the unilateral spectral density. In matlab in Note FFt divided by sampling points should be noted when calculating the bilateral spectrum divided by the frequency resolution.)

数字信号处理中的程序，采用music编写程序，进行谐波恢复试验(Digital signal processing procedures, the use of music programming, for harmonic retrieval test)

rayleigh fading topology_space_time_code

说明：  MATLAB编写的经典粒子群程序，实现最基本的函数优化功能。(MATLAB program written in the classical PSO, to achieve the most basic function optimization.)

直接序列扩频系统（DS，Direct Sequence）又称为直接序列调制系统或伪噪声系统（PN 系统），简称为直扩系统，是目前应用较为广泛的一种扩展频谱系统。要传送的信息经伪随机序列编码后对载波进行调制。在发信端越冬用扩频序列去扩展信号的频谱，在收信端，用相同的扩频友序列进行解扩，将展宽的频谱扩展信号还原成原始信号。因为伪随机序列的速率远大于要传送信息的速率，所以受调信号的频谱宽度将远大于要传送信息的频谱宽度，帮称之为扩频(Direct sequence spread spectrum (DS, Direct Sequence) modulation system, also known as direct sequence or pseudo-noise system (PN system), referred to as direct expansion systems, is currently the more widely used as a spread spectrum system. To send the information encoded by the pseudo-random sequence of carrier modulation. End of winter in the letter to extend the signal with the spreading sequence of spectrum, in the end prepared to receive and use the same sequence spread spectrum despreading friends, broadening the spectrum to restore the original signal expansion signals. Because the rate of pseudo-random sequence is much larger than the rate of information to be sent, so the frequency spectrum by adjusting the width of the spectrum is much larger than the width of the information to be sent to help is called spread spectrum)

直线一级倒立摆稳摆控制的MATLAB仿真图(Linear stability of inverted pendulum chart pendulum control of the MATLAB simulation)