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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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I_14
基于Matlab的指纹识别代码，有兴趣可以看看(Fingerprint identification code)
- 2012-03-23 21:13:06下载
- 积分：1
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CH5
这是一个基于GUI系统。 GUI是在命令行调用通过键入“ui_start”。 GUI是自我解释性。(This is a GUI-based system. GUI is invoked on the command line by typing " ui_start" . GUI is self explanatory.)
- 2010-05-17 20:20:12下载
- 积分：1
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GSM-CHANNEL-CODING
MATLBA 信道仿真,完成信道卷积码循环码的编译码(MATLBA channel simulation complete Channel Convolutional Codes cycle code encryption)
- 2007-04-15 12:49:26下载
- 积分：1
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curve-fitting
用于曲线拟合的matlab程序 属于基本的内容 但是很好用(curve fitting with matlab)
- 2011-07-30 05:08:40下载
- 积分：1
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ldpcdecoderandencoder
这是国标数字电视地面传输标准里信道编解码器的MATLAB程序，用的是LLR-BP的解码算法，请大家指正。另有根据国标生成的生成矩阵和校验矩阵稍后传上来(This is the national standard of digital TV terrestrial transmission standard in channel codec MATLAB program, using the LLR-BP decoding algorithm, please correct me. Otherwise in accordance with GB-generated matrix and calibration matrix generation later Chuan-up)
- 2021-02-25 18:59:38下载
- 积分：1
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finiteelement
用于求解声场在波导中的分布,并研究入射声波在非均匀介质中的传播情况(get the distribution of the pressure)
- 2009-12-15 10:48:25下载
- 积分：1
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matlab21
这是一个MATLAB的学习课件,里面有许多MATLAB实用的好例子,有兴趣的朋友可以(This is a MATLAB-learning courseware, there are many good examples of MATLAB practical, interested friends can)
- 2007-09-23 16:39:21下载
- 积分：1
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chopper
Two quardrand chooper, four quardrant chopper it is simulikn models
- 2013-03-31 22:23:07下载
- 积分：1
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GRM
palmer s method gor calculatin near surfave velocity by "generalized reciprocal method"
- 2010-12-01 21:10:25下载
- 积分：1
