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qpsk
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)
- 2009-04-12 15:45:03下载
- 积分：1
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main
[sigma,mu,A]=mygaussfit(x,y)
[sigma,mu,A]=mygaussfit(x,y,h)
this function is doing fit to the function
y=A * exp( -(x-mu)^2 / (2*sigma^2) )
- 2010-10-20 14:41:20下载
- 积分：1
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es_filtre
implimentation sous matlab
- 2010-03-13 23:42:39下载
- 积分：1
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PID-sturation
先进pid控制：抗积分饱和PID算法源程序(Advanced pid control: anti-integral saturation PID algorithm source)
- 2012-06-06 14:09:42下载
- 积分：1
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Series_Resonamce_exp_101a
Practical Matlab experiment for Series Resonamce
- 2013-10-04 15:00:10下载
- 积分：1
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KinematicSimulationofaRobotArm
利用Matlab仿真工具，结合机械臂运动学特性，实现了机械臂系统的运动学仿真。(Using Matlab simulation tools, combined with the robot arm kinematics characteristics, realize the manipulator kinematics simulation system.)
- 2008-03-23 12:02:12下载
- 积分：1
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MatImpDes
基于MATLAB 对数据进行处理 加密解密(MATLAB-based encryption and decryption of data processing)
- 2011-05-29 10:21:36下载
- 积分：1
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test2
指纹特征识别 提取出指纹分叉点和端点，作为后期特征提取的准备(fingerprint identification)
- 2014-08-07 17:27:49下载
- 积分：1
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gratDesent
用速降法解决凸函数优化的matlab程序，利用最大梯度的方向上的下降最快的原理求解凸函数的最优值。(Descent gradient menthod in matlab)
- 2011-09-16 23:34:07下载
- 积分：1
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SSIM
此程序为matlab函数，实现用结构相似性（SSIM）准则评价图像，与峰值性噪比的作用类似。(This program is a matlab function, and criteria for evaluation of structural similarity (SSIM) image acts like a peak-noise ratio.)
- 2012-07-28 13:02:53下载
- 积分：1
