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MATLAB 直接序列扩频

于 2023-03-14 发布 文件大小:481.26 kB
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代码说明:

此代码是仿真的在 AWGN 信道中直接序列扩频通信系统。

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    Matlab程序,实现了一种新的色彩白平衡算法。 针对物体在有色光源照射下呈现偏色的现象,提出一种改进的LoG边缘自动白平衡算法。该算法在YCbCr空间的Cb和Cr分量上同时利用LoG算子提取边缘,利用LoG边缘具有零交叉特性直接得到边缘两侧的像素。为了避免占主导的彩色纹理造成干扰,利用白色区域的偏色信息进行边缘抑制。利用得到彩色边缘对原图的偏色进行有效的估计,最后计算三颜色通道的增益并进行白平衡。对大量图片进行了实验,结果表明该算法对不同色光照射下的图像均能很好地进行白平衡,同时与多种白平衡算法的对比实验表明该算法适应面广,性能良好。 (Matlab program implements a new color white balance algorithms.)
    2009-10-21 16:33:34下载
    积分:1
  • sed6120
    整有效。中间四个字节分别代表设备的地址、指令类型、指令参数1(OPT1)和指令参数2(OPT2)。设备在对这四个字节的内容进行译码后执行相应的操作
    2009-12-25 09:29:17下载
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  • ML
    说明:  Maximum likelihood Identification system
    2013-02-21 04:50:27下载
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    采用自适应波束形成技术,获得想得到的方向图。(Adaptive beamforming technology, access to the desired pattern.)
    2011-10-12 20:26:40下载
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    该程序基于MATLAB平台编写,实现了GPS/INS基于位置松组合的卡拉曼滤波算法,分为两部分,GPS_INS.m为组合算法主文件,输入捷联惯导平台实测数据,设置各量测噪声参数,在调用卡尔曼滤波函数进行数据融合校正,最后实现绘图功能;kalman_GPS_INS.m 为卡拉曼滤波程序,输入量测误差以及各噪声参数可得位置和速度估计值。(The program is based on MATLAB platform, and realizes the Kalman filtering algorithm of GPS/INS based on position loosening combination. It is divided into two parts. GPS_INS.m is the main file of the combined algorithm, inputs the measured data of the strapdown inertial navigation platform, sets the measurement noise parameters, and carries out data fusion correction by calling the Kalman filter function, and finally realizes the drawing. Function; kalman_GPS_INS.m is Kalman filter program, input measurement error and noise parameters can be estimated position and velocity.)
    2018-09-19 20:01:05下载
    积分:1
  • twoto11
    ldpc码在在twoto矩阵,即时间控制,频率两个参数变量的系统内仿真,matlab7.0编译通过。(LDPC code in twoto matrix, namely the time control, the frequency of the two parameters of the system simulation variables, matlab7.0 compiled through.)
    2007-10-05 12:52:02下载
    积分:1
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    说明:  Parzen窗法,由样本求概密估计,例为一维正态分布和双峰均匀分布,内附随机数生成的原理说明。( window method, by the sample density estimate for estimated Example for one-dimensional normal distribution and bimodal uniform distribution, random number generator containing a description of the principle.)
    2010-04-09 14:08:57下载
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    黄锷院士的EMD/EEMD程序,可实现EMD/EEMD 计算(Wong Ngok academicians EMD/EEMD procedure can achieve EMD/EEMD calculation)
    2021-04-06 22:19:02下载
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  • xunlian
    对于OFDM系统,对信道进行估计,编写信道训练序列来进行估计(For the OFDM system, we estimate the channel and compile the channel training sequence to estimate it.)
    2021-04-12 09:28:57下载
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  • aaaa
    把地理区域分成一个个小区,蜂窝系统在该区域内提供无线覆盖。把可用的频谱分成很多信道,每个小区分配一组信道。使用频分双工(FDD)。在小区间进行频率利用,N个小区构成一个簇,簇间进行频率复用。定义了传播特性(信道参数)以及同频小区的位置。信道的参数包括:小区半径,路径损耗指数,以分贝为单位的对数正态阴影的标准差,基站发射功率级,移动台发射功率级,每个小区的扇区数,扇区化天线的正反向比,要仿真的瞬时位置的组数,同频干扰阈值。(To a geographical area is divided into small areas, cellular systems in the region to provide wireless coverage. The available spectrum is divided into multi-channel, each plot the distribution of a group of channels. The use of frequency division duplex (FDD). In the district between the frequency of use, N plots constitute a cluster, cluster between frequency reuse. The definition of the propagation characteristics (channel parameters), as well as with the frequency of residential location. Channel parameters include: cell radius, path loss index to decibels for units Lognormal shadow of the standard deviation, the base station transmitter power level, mobile station transmitting power level, the number of sectors in each district, sector of the antenna the pros and cons to the ratio, to the transient simulation of the group a few positions, the same frequency interference threshold.)
    2009-01-08 19:02:48下载
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