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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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Lecture8_exc_1
electric motor with torque speed control
- 2012-03-23 02:54:17下载
- 积分:1
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ar_g
PURPOSE: MCMC estimates Bayesian heteroscedastic AR(k) model
imposing stability restrictions using Gibbs sampling
y = b0 + y(t-1) b1 + y(t-2) b2 +,...,y(t-k) bk + E,
E = N(0,sige*V), sige = gamma(nu,d0), b = N(c,T),
V = diag(v1,v2,...vn), r/vi = ID chi(r)/r, r = Gamma(m,k)( PURPOSE: MCMC estimates Bayesian heteroscedastic AR(k) model
imposing stability restrictions using Gibbs sampling
y = b0+ y(t-1) b1+ y(t-2) b2+,...,y(t-k) bk+ E,
E = N(0,sige*V), sige = gamma(nu,d0), b = N(c,T),
V = diag(v1,v2,...vn), r/vi = ID chi(r)/r, r = Gamma(m,k))
- 2012-04-28 03:36:11下载
- 积分:1
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SPLL
对三相电网输出相电压相位频率的锁相环技术simulink(Phase-locked loop SIMULINK for three-phase power grid)
- 2019-01-26 14:19:19下载
- 积分:1
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2DPOCHA
日本教授Ozaki所编写的二维相关光谱的计算可执行程序,国际上比较流行适用。(2dcos software to implement the nir spectroscopy analysis.)
- 2013-12-15 20:08:58下载
- 积分:1
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if-eng=case
说明: 条件语句是编程中最常用的结构,这里作一个演示结果的文件(conditional statement is the most commonly used programming structure here for a demonstration of the results of the document)
- 2005-12-06 11:36:12下载
- 积分:1
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suojian
matlab实现的点云精简算法,亲测可用,效果不错(cloud jingjian)
- 2020-12-28 15:29:02下载
- 积分:1
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jienan
基于K均值的PSO聚类算法,使用matlab实现智能预测控制算法,数据模型归一化,模态振动。( K-means clustering algorithm based on the PSO, Use matlab intelligent predictive control algorithm, Normalized data model, modal vibration.)
- 2020-11-10 09:59:46下载
- 积分:1
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Copula_model
copula实现多维相关分析,采用高斯分析多维的关系(Copula implements multidimensional correlation analysis)
- 2018-11-27 12:59:50下载
- 积分:1
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Perceptron
Neural network Perceptron algorithm Matlab实现(Neural network Perceptron algorithm )
- 2009-10-27 23:20:46下载
- 积分:1