网站首页

登录

qpsk

于 2009-04-12 发布文件大小:568KB

 0  266

下载积分: 1 下载次数: 21

我要下载

代码说明：

摘　要:根据HFC网络上行信道的特性,建立了信道模型分析了上行信道中存在的各种噪声对QPSK 调制技术的影响。结果表明在C /N (传输信道载噪比)较低的情况下,采用QPSK调制方式,可以提高系统的抗干扰能力。关键词: QPSK 光纤同轴电缆混合网上行信道噪声(Abstract: HFC network in accordance with the characteristics of the uplink channel, the establishment of a channel model an analysis of the various uplink channel noise on the impact of QPSK modulation. The results show that the C/N (transmission channel carrier-to-noise ratio) lower, the use of QPSK modulation, can improve the system of anti-interference ability. Keywords: QPSK hybrid fiber coaxial cable network uplink channel noise)

文件列表：

上行信道中QPSK调制技术的研究[1].pdf

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

a1
说明： matlab codes for calculate the control action of the ststems and that shown in the systems.

2013-03-13 00:53:51下载

积分：1
matlab---soso
利用matlab實作facedection偵測效果良好準確率高(Detect the use of matlab implementation facedection good results with high accuracy,)

2009-12-29 12:42:03下载

积分：1
communication-system-MATLAB_SIMULINK
基于MATLAB_SIMULINK的模拟通信系统仿真(Simulation-based communication system simulation MATLAB_SIMULINK)

2011-02-15 10:13:40下载

积分：1
3db
使用matlab通过微弯波导和直波导耦合设计一个3db耦合器(Through the use of matlab Microbend waveguide and the straight waveguide coupled design a 3db coupler)

2020-06-29 16:20:02下载

积分：1
mds
本代码是关于Multi-Dimensional Scaling（MDS）的代码，可以用于特征提取、特征选择，或是矩阵降维。(This file is part of the Matlab Toolbox for Dimensionality Reduction v0.4b. You are free to use, change, or However, )

2021-03-16 20:19:21下载

积分：1
1
说明： Calling a non-local algorithm for image denoising.

2010-05-06 17:13:44下载

积分：1
id3
id3 in machin learning

2011-06-18 14:14:13下载

积分：1
基于GA的WSN路由协议
基于遗传算法的WSN通信路由协议matlab仿真代码,讲解清楚适合实用(WSN routing protocol based on genetic algorithm matlab simulation code, to explain clearly, suitable for practical)

2020-07-22 17:18:44下载

积分：1
resize
图像的缩放，采用两种方法，可以直接运行。向后映射，1.最近领域法，2.双线性插值法(Image scaling, two methods can be run directly. Backward mapping, a recent field of law, (2) bilinear interpolation)

2014-11-26 00:38:59下载

积分：1
susan
自己写的两种susan边缘检测算子。能够较好的实现弱边缘的精确检测。(Susan wrote their own edge detection operator. Better able to accurately detect the weak edge.)

2010-09-28 14:47:40下载

积分：1

696516资源总数
106914会员总数
0今日下载