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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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cpfg
车牌分割技术,主要应用于对车牌的识别,使用matlab编写。(car discrete)
- 2012-06-02 20:01:20下载
- 积分:1
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BrillouinZoneSamplingOfAPeriodicChainWithNSites-a
mathematica 包,非周期链的布里渊区选样
- 2015-01-17 20:54:59下载
- 积分:1
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knn
K-nn implemention has written with matlab.
- 2015-02-17 02:39:10下载
- 积分:1
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EELM
增量式极限学习机的matlab源码,很不错,本科毕设用到的(Incremental extreme learning machine matlab source code, very good, complete set used in undergraduate)
- 2020-12-06 10:29:22下载
- 积分:1
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MATLAB7hybridprogramming
MATLAB+7_0混合编程,和C及C++等的共同开发(MATLAB+7 _0 hybrid programming, and C and C++, etc. to develop)
- 2010-12-27 10:48:58下载
- 积分:1
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monocycle_doublet_orig
UWB-Run from editor debug(F5)-PPM(pulse position modulation) of
UWB monocycle and doublet waveforms.
This m file plots the time and frequency waveforms for PPM 1st and 2nd derivative
equations used in UWB system analysis. Fudge factors are required to
correct for inaccuracies in the 1st and 2nd derivative equations.
Tail to tail on the time wave forms must be considered as the actual pulse width.
- 2012-10-02 22:33:48下载
- 积分:1
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Engineering-Optics-Simulation
本程序基于Matlab,可以对特定波长光线在透镜系统中进行光线追迹。可以生成任意方向平行光,点光源任意角度光线,并对全反射,光线射出系统等特殊情况用红色标出。透镜数任意,透镜参数可设。(The program is based on Matlab, with a specific wavelength of light in the lens system for ray tracing. Parallel light can be generated in any direction, at any angle point source of light, and the reflection of light injection system and other special circumstances marked in red. Any number of lenses, lens parameters can be set.)
- 2021-04-02 19:29:08下载
- 积分:1
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2 DVR
说明: Simulation for comparison of DVR and Other compensating devices
- 2021-02-13 13:34:32下载
- 积分:1
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multiprocessor
multi processor scheduling with genetic algorithm
- 2009-09-07 20:20:36下载
- 积分:1