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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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pcapro
基于主成分分析的PCA算法,利用进行各类图像降维,达到精简计算过程的目的。(PCA based on principal component analysis algorithm for various images using dimensionality reduction to achieve the purpose of streamlining the calculation.)
- 2011-05-03 21:39:51下载
- 积分:1
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BCH_Sim_Main
BCH编译码程序,对误码性能仿真,获得实际的误码曲线。(BCH Codec error performance simulation, the actual error curve.)
- 2012-11-22 22:57:02下载
- 积分:1
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code2
machine data processing part2
- 2010-08-02 23:51:40下载
- 积分:1
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auti
PID regulators in diferent form
- 2010-01-07 06:33:33下载
- 积分:1
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Russiansquare
说明: 基于matlabGUI的俄罗斯方块,可实现与一般俄罗斯方块相同的功能(Russian square based on matlab)
- 2010-04-01 11:00:31下载
- 积分:1
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Set-invariance-in-control
positively invariant
sets and their application to the analysis and synthesis of control systems.
- 2013-10-23 20:05:59下载
- 积分:1
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waver
通过matlab编写代码演奏的卡农,用的基准音,没有加入波形修饰所以音色比较单一(matlab matlab playing playing Khanom Khanom Khanom matlab played)
- 2013-11-03 20:55:00下载
- 积分:1
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zernike
zernike与patran得借口程序,编制机械软件patran的节点与matlab实现对口互接,用matlab复原分析元件,从而适合下一步数据处理即zernike波面拟合与数据分析(gram-schmidt and hosehouder algorithms, stability test procedures for the adoption of gram-schmidt algorithm hosehouder correctness of the algorithm is suitable for engineering complex operator)
- 2009-12-02 14:23:14下载
- 积分:1
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ModelsPforPaPStand-AlonePPVPSystem
说明: matlab实现光伏阵列的仿真和最大功率点跟踪(matlab simulation and realization of photovoltaic array maximum power point tracking)
- 2011-03-17 00:31:19下载
- 积分:1