KNNclust

spectral analysis smoothing filter

数字基带系统将数字信号从时域上看时数字滚降，需要画出滚降前后的波形展示出来。频域上带宽变化了。输入滤波器之前的波形与采样判决之后的波形。采样判决前的频谱。 采样判决后的码型。 2、眼图（采样判决之前的眼图）（信噪比大眼图清晰） 3、误码曲线，（横坐标时信噪比，纵坐标时误码率） 4、Arfa变化对误码特性的影响，变好还是变差(变好)，眼图清晰度变化（清晰），传递函数的带宽的变化。（带宽越大）(1.Digital baseband system point of view the digital signal from the time domain when the number of roll-off, you need to draw the waveform displayed before and after the roll-out. The frequency domain, the bandwidth change. Input filter and sample ruling before the wave after wave. Sample pre-judgment spectrum. Sampling pattern after the verdict. 2, the eye diagram (eye before sampling decision) (SNR big eye clear) 3, the error curve (abscissa when the signal to noise ratio, bit error rate when the vertical axis) 4, Arfa impact of change on BER performance, get better or worse (getting better), change of eye-definition (clarity), the transfer function of the bandwidth changes. (The greater the bandwidth))

雷达在单部大功率干扰、多部分布式干扰情况下探测距离和暴露区的仿真(Radar simulation distance and exposed areas in a single portion of power interference, multiple distributed interference)

基于matlab软件的伦琴衰落信道模块代码 输入打开即可使用(Based on MATLAB software Roentgen fading channel input module code can use to open)

对偶单纯形法matlab程序，可以显示每步计算步骤，方便初学者理解单纯形法。(Dual simplex method matlab, can display every step calculation steps for beginners to understand the simplex method. )

说明：  动态目标检测的matlab程序仿真使用线性调频信号(Dynamic target detection matlab simulation procedure using a linear FM signal)

ISO-16609-- 银行业务.使用对称技术的消息鉴别要求(ISO-16609- banking business. Message Authentication using symmetric techniques required)

G729 Annex A MATLAB CODE

ds cdma block diagram on matlab

A cyclic redundancy check (CRC) is an error-detecting code designed to detect accidental changes to raw computer data, and is commonly used in digital networks and storage devices such as hard disk drives. Blocks of data entering these systems get a short check value attached, derived from the remainder of a polynomial division of their contents on retrieval the calculation is repeated, and corrective action can be taken against presumed data corruption if the check values do not match.