网站首页

登录

2177e8d3adb15fabed33322ffd32afc8394a

于 2019-03-13 发布文件大小:497KB

 0  203

下载积分: 1 下载次数: 0

我要下载

代码说明：

an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA has been used widely. These systems suffers from multiple access interference because of other users transmitting in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security. This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system. These sequences by chaotic maps are generated.

下载说明：请别用迅雷下载，失败请重下，重下不扣分！

发表评论

0 个回复

matlabfindpeak
定位曲线峰值大小及峰值点横坐标,并对结果进行图形化标示。(localization of the peak horizontal ordinate and amplitude for a curve)

2011-06-12 05:18:26下载

积分：1
music8
MUSIC算法DO模拟2个独立窄带信号入射到均匀线阵上，信号间互不相关，与噪声相互独立，噪声为理想高斯白噪声，阵列的阵元数为10，快拍数为200。阵元间距为入射信号波长的1／2，信噪比为20dB，信号入射角度差分别为5°，10°，20°。(DO MUSIC algorithm simulate two independent narrowband signals incident on the ULA, among signal unrelated, independent noise, the noise is ideal Gaussian white noise, the number of array elements of the array is 10, the number of snapshots to 200. Element spacing is 1/2 of the wavelength of the incident signal, SNR is 20dB, the signal difference between the angle of incidence was 5 °, 10 °, 20 °.)

2014-12-09 08:56:21下载

积分：1
npsmpuaq
本程序的性能已经超过其他算法，可实现对二维数据的聚类，是路径规划的实用方法，对HARQ系统的吞吐量分析，已调制信号计算其普相关密度，有CDF三角函数曲线/三维曲线图，采用波束成形技术的BER计算。(This program has exceeded the performance of other algorithms, Can realize the two-dimensional data clustering, Is a practical method of path planning, HARQ throughput analysis of the system, Modulated signals to calculate its density Pu-related, There CDF trigonometric curve/3D graphs, By applying the beam forming technology of BE.)

2016-03-27 13:57:35下载

积分：1
lsvmk
LSVMK Langrangian Support Vector Machine algorithm LSVMK solves a support vector machine problem using an iterative algorithm inspired by an augmented Lagrangian formulation.

2008-03-21 11:33:46下载

积分：1
ldpc_cdma
说明： ldpc码在cdma中应用，matlab实现(cdma ldpc code in the application and realization of Matlab)

2006-01-09 18:58:38下载

积分：1
segy
主要用于地震数据处理中读取segy文件数据，也可以自己合成的数据保存为segy文件。(Mainly used in seismic data processing to read segy file data, you can also save their synthetic data for segy file.)

2012-05-20 20:23:39下载

积分：1
imageica
一个数字图象ICA研究领域的比较专业的MATLAB包，包括了源代码(code),测试图像（data）,和结果数据（ esults）。可以进行ICA/ISR/TOPOICA的运算。(A digital image ICA research comparing professional MATLAB package, including the source code (code), test image (data), and the resulting data (esults). Can ICA/ISR/TOPOICA arithmetic.)

2007-09-28 15:26:53下载

积分：1
SOMm1
This is SOM clustering source code

2011-11-15 14:15:02下载

积分：1
APClustering
APCLUSTER Affinity Propagation Clustering (easy to usemodify, but no sparse capability)

2010-09-06 11:02:53下载

积分：1
irglomo_v10
大范围由不同种类组成的通信系统的并行模拟计算(Parallel Simulation of Large-Scale Heterogeneous Communication Systems)

2010-09-23 08:37:59下载

积分：1

696516资源总数
106914会员总数
0今日下载