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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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viterbi
matlab的维特比译码程序，加入汉明距离的提取(matlab Viterbi decoding process, from extraction Jiaruhanming)
- 2011-01-23 12:47:15下载
- 积分：1
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jnkkfdfq
包含优化类的几个简单示例程序，合成孔径雷达（SAR)目标成像仿真，主要是基于mtlab的程序，计算加权加速度,包括面积、周长、矩形度、伸长度，D-S证据理论数据融合。( Optimization class contains several simple sample programs, Synthetic Aperture Radar (SAR) imaging simulation target, Mainly based on the mtlab procedures, Weighted acceleration, Including the area, perimeter, rectangular, elongation, D-S evidence theory data fusion.)
- 2016-03-03 19:42:34下载
- 积分：1
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matlab球谐函数工具箱
说明： 将全球采样值通过球谐分析转化为球谐模型，可设置输出的球谐模型阶次。(The global sampling values are transformed into spherical harmonic model by spherical harmonic analysis, and the order of output spherical harmonic model can be set.)
- 2020-12-28 22:39:01下载
- 积分：1
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完整的粒子追踪测速迭代松弛算法完整程序
电力系统暂态稳定程序，可以进行暂态稳定计算,AHP层次分析法计算判断矩阵的最大特征值,实现了对10个数字音的识别，ICA（主分量分析）算法和程序，基于chebyshev的水声信号分析，通过虚拟阵元进行DOA估计。
- 2022-01-26 06:24:33下载
- 积分：1
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好用的模糊神经网络算法源程序
包括脚本文件和函数文件形式，现代信号处理中谱估计在matlab中的使用，数学方法是部分子空间法，相参脉冲串复调制信号，实现了对10个数字音的识别程序与理论分析结果相比。
- 2022-01-30 23:19:42下载
- 积分：1
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dianliceng
这是一个matlab编写的电离层误差图的程序。里边分别利用广播星历和模型修正进行了编程。(It is written in a matlab program ionospheric error plots. Inside were using broadcast ephemeris and model updating for the programming.)
- 2011-01-22 12:32:46下载
- 积分：1
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MATLABManual(2)
说明： 介绍MATLAB使用的相关知识和技巧，对入门者比较有用。(MATLAB introduce the use of relevant knowledge and skills useful for beginners comparison.)
- 2008-09-04 17:44:59下载
- 积分：1
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NSGAII
通过Matlab，实现NEGAⅡ，对于多目标优化，并对研究问题SCH，进行了相关实验，效果不错，可以通过增加种群数、个体长度、以及迭代次数，来提高解的质量(The Matlab, the NEGA II, for the multi-objective optimization, and research questions SCH, the relevant experiments, good results, by increasing the number of population, individual length, and number of iterations to improve the quality of the solution)
- 2012-05-27 15:14:02下载
- 积分：1
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Final-project
利用matlab 制作GUI系统 模拟并分析LTE 基站的功效与多种调制方式之间的配合 从而得出最优化方案。 (Produced using matlab GUI system simulation and analysis of the effectiveness of LTE base station with a variety of co-ordination between the modulation and thus finding the most optimal solution.
discription:
1.At the beginning ,the Base Station covers 20 UEs ,each uses 5 RBs
2.the new UE inserts to the system would also use 5RB
3.the total resource for the system : 100 RBs)
- 2011-10-07 00:07:27下载
- 积分：1
