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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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mypwe
2D PWM Photonic crystal source code
- 2013-12-03 17:34:30下载
- 积分:1
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10
说明: Converting an image into blocks of 8 x 8 and apply DCT on any one of the blocks
- 2014-01-22 13:28:41下载
- 积分:1
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fxqjigxa
用于文本分析和分类的pLSA(tHQQOWZ)的Matlab算法,含有测试数据及算法原理介绍。也可用于图像分析。相比原来的版本,增加了示例程序DIJOHfK,以实现可视化效果,用户更容易使用和理解pLSA算法。(For text analysis and classification of Matlab (Temp) pLSA algorithm, containing the test data and algorithm theory. Can also be used for image analysis. Compared to the original version, an increase of sample program DIJOHfK, in order to achieve the visual effect, the user is more easy to use and understand the pLSA algorithm.)
- 2016-02-18 22:14:57下载
- 积分:1
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ROC01
一个用于接收机工作特性仿真的MATLAB编制的ROC函数。(An ROC function for MATLAB programming for receiver job characteristics simulation.)
- 2017-04-03 00:47:18下载
- 积分:1
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signal preprocessing
信号预处理程序,包括最小二乘法,滑动平均法,五点三次法以及五点滑动法(Signal preprocessing programs, including least square, sliding average,five point three average and five-point sliding)
- 2020-11-23 15:19:34下载
- 积分:1
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pca_regression
基于主元分析的多元线性回归程序,输出回归系数,主元贡献率和拟合误差(multiple linear regression using pca)
- 2009-03-31 21:34:36下载
- 积分:1
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capacity
MIMO系统容量仿真的MATLAB程序,注解详细(capacity of MIMO system using MATLAB)
- 2014-11-28 16:49:36下载
- 积分:1
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SOC
说明: 采用开路电压法和安时积分法相结合的算法,对soc进行估计(open voltage circuit combined with columb counting method)
- 2020-03-06 16:25:46下载
- 积分:1
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100examples
matlab程序百例。常用程序都可在上面查到。(100 cases of matlab procedures. Commonly used procedures can be found above.)
- 2008-02-20 16:18:21下载
- 积分:1