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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)
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- 积分：1
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hurong
用巴特沃斯方法和切比雪夫方法做的数字带通滤波器(Bandpass filter using the method of Butterworth and cut the number of Chebyshev method
)
- 2012-03-21 14:59:22下载
- 积分：1
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liuyifa
模式识别留一法模式识别留一法模式识别留一法模式识别留一法模式识别留一法(Pattern Recognition Pattern Recognition leave-one-leave-one-leave-one pattern recognition pattern recognition pattern recognition leave-one-leave-one-)
- 2011-05-17 09:31:14下载
- 积分：1
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process_imgWIN.m
saving an image to a binary file.
- 2013-03-07 23:51:32下载
- 积分：1
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Projet_IHM
Réalisation d une interface homme-machine complexe (gestion de
plusieurs panels, groupes de boutons et une ScrollBar), implantation du modèle d architecture
Seeheim.
- 2014-12-25 16:58:28下载
- 积分：1
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LTE-SUI-CHANNEL
LTE with SUI channel
- 2013-12-11 18:57:21下载
- 积分：1
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fil
MATLAB code describing adaptive filter
- 2014-02-08 18:22:22下载
- 积分：1
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QCLDPC-encode
针对目前应用比较广泛的基于准循环矩阵构造的QC-LDPC(准循环LDPC)码的各种构造方法,分析比较了随机构造LDPC和各种准循环LDPC编码方法的优缺点,通过理论分析和MATLAB中的性能仿真,提出的相应的优化方案(Broader view of the present application of quasi-circulant matrices based QC-LDPC (quasi-cyclic LDPC) codes for the various construction methods, structural analysis and comparison of the random LDPC and various quasi-cyclic LDPC coding advantages and disadvantages, through theoretical analysis and MATLAB The performance simulation, optimization scheme proposed by the corresponding)
- 2010-08-31 10:02:27下载
- 积分：1
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100examplesofmatlab
MATLAB编程百例，一百个例子让您从入门到精通，强烈推荐！(MATLAB Programming 100 cases, 100 examples to let you from entry to proficient, highly recommended!)
- 2008-03-18 16:41:30下载
- 积分：1
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2
说明： filter line recognation iamge processing
- 2011-02-09 15:44:46下载
- 积分：1
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