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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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NHT1d
采用以下四种格式:中心差分、一阶迎风、混合格式和QUICK格式对一维稳态无源项的对流-扩散方程进行求解(The following four formats: central difference, the first order upwind, QUICK format mixed formats and one-dimensional steady-state passive entry of convection- diffusion equations were solved)
- 2010-11-11 15:13:40下载
- 积分:1
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Matlab-codes
This file contains two ways for generating two independent random Gaussian variables with Matlab.it is so useful in simulation of communication channels.
- 2011-01-28 06:02:33下载
- 积分:1
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horner2
horner2.PDF CE COURS VOUS PERMETTRA D APPRENDRE D AVANTAGE SUR LA MÉ THODE DE HORNER PROGRAMMATION MATLAB
- 2013-09-13 07:15:43下载
- 积分:1
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syncronization
Symbol synchronization
- 2017-06-22 11:27:52下载
- 积分:1
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KNN_Classifier
一个matlab环境下的k近邻分类器,代码中有详细的注释说明,使用方便.(K-Nearest-Neighbor-Classifier MatLab Code)
- 2009-11-22 11:18:55下载
- 积分:1
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SAPSO_SecPSO_SecVibratPSO
用MATLAB实现SAPSO、SecPSO、SecVibratPSO算法,程序没错误,可以直接运行,非常适合刚学PSO者(Implementation of SAPSO, SecPSO, SecVibratPSO algorithm with MATLAB, the program no error, can be directly run, very suitable for just learning PSO
)
- 2013-08-04 12:16:41下载
- 积分:1
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IIR_Chebyshev2_LP
自己编写的ChebyshevII型滤波器的源程序.对于毕业设计的同学,很有参考价值.它是ChebyshevII型低通滤波器(their ChebyshevII prepared by the filter type of the source. Design for graduate students, great reference value. It is ChebyshevII-type low-pass filter)
- 2007-04-25 18:31:04下载
- 积分:1
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Memory_2005
介绍了关于memory的相关函数,对于大多数程序员有很大帮助,希望大家多多使用(the information about memory)
- 2013-10-11 11:26:50下载
- 积分:1
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arotineoffft
从网上下载的一个和matlab实现快速傅立叶变换相关的程序,希望能够给大家一点帮助(Downloaded from the Internet and matlab realize a Fast Fourier Transform related procedures, hoping to give us some help)
- 2007-09-20 10:56:17下载
- 积分:1