pso-fd

Quadrature amplitude modulation (QAM) is a modulation scheme in which two sinusoidal carriers, one exactly 90 degrees out of phase with respect to the other, are used to transmit data over a given physical channel. One signal is called the I signal, and the other is called the Q signal. Because the orthogonal carriers occupy the same frequency band and differ by a 90 degree phase shift, each can be modulated independently, transmitted over the same frequency band, and separated by demodulation at the receiver. For a given available bandwidth, QAM enables data transmission at twice the rate of standard pulse amplitude modulation (PAM) without any degradation in the bit error ratio (BER).

为了了解系统某一状态时所处的时间，用积分方法从相平面获得时间信息。(In order to understand the time in which a state of the system from the phase plane using the following methods to obtain time information.)

采用程序的方法介绍捷联惯性导航系统进行导航的方法，并将载体的导航信息输出以检验捷联惯性导航系统的导航效果。(Strapdown inertial navigation systems is a kind of common navigation systems in land vehicles.)

录制一段自己的语音信号，并对录制的信号进行采样；画出采样后语音信号的时域波形和频谱图；给定滤波器的性能指标，采用窗函数法和双线性变换设计滤波器，并画出滤波器的频率响应；然后用自己设计的滤波器对采集的信号进行滤波，画出滤波后信号的时域波形和频谱，并对滤波前后的信号进行对比，分析信号的变化；回放语音信号；最后，设计一个信号处理系统界面。(Section of their own voice recording signal, and recording the signal sampling draw sample after the speech signal time-domain waveform and frequency spectrum given filter performance indicators, using a window function method and bilinear transformation design of filters, and draw the frequency response filter then use the filter of their own design for the signal acquisition filtering, after filtering the signal to draw the time-domain waveform and spectrum, and filtering of signals before and after contrast, analysis of signal changes playback voice signal Finally, the design of a signal processing system interface.)

cdma code for wireless communication

传号反转码CMI的simulink模拟产生程序(Simulink simulation CMI mark inversion code generation program)

FIR滤波器的频率抽样法,对照胡广书教师的教材例子进行了实现(FIR filter frequency sampling method,according to the example of Hu Guangshu s book《Digital Signal Processing》)

温度场的数值模拟程序，主要是应用matlab编程实现(temperature field of numerical simulation program, is the application of Matlab programming)

16 qam modulation that apply on sequential with viterbi uncoded

光学组件的工具包，模拟光线的反射、折射、以及绘制各种像差曲线例如球差、色差(A matlab toolkit for optical components that simulates light reflection, refraction, and drawing various aberration curves such as spherical aberration and chromatic aberration)