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yubianma
BD预编码 基于完整信道信息的MIMO预编码仿真(failed to translate)
- 2013-05-02 16:03:02下载
- 积分：1
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123
针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)
- 2011-09-05 15:20:54下载
- 积分：1
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12-李洁-517021910066
说明： 仿真相干光通信系统，包含各种损伤和均衡算法(the model of coherent optical fiber channel)
- 2020-06-07 08:25:15下载
- 积分：1
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network
接入网是电信网的重要组成部分。接入网技术的发展，应用和普及令人瞩目，深受世界各国的广泛重视。本书全面介绍了各种接入网技术。全书共分七章，分别介绍了：接入网基本知识、铜线接入技术，电缆调制解调器接入技术，光接入技术，无线接入技术、接入网接口及其协议、接入网网管技术。
在本书的编写过程中，力求做到内容新颖、知识全面、由浅入深、通俗易懂，注重基本概念和基本原理。本书适用于通信工程专业的本科学生和从事相关专业的技术人员使用。(Access Network is a telecommunications network, an important part of. Access network technology development, application and popularization of eye-catching, by the extensive attention of the world. This book gave a comprehensive account of the various access network technologies. Book is divided into seven chapters, namely the introduction: basic knowledge of Access Network, copper access technologies, cable modem access technology, optical access technologies, wireless access technology, access network interface and its agreements, access network management technology. In the book)
- 2007-10-08 18:57:13下载
- 积分：1
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ANFISCLUST_10SLOT
working of the fifth generation intelligent radio that is Cognitive Radio (CR) system which works on predictive data rate and propose ANFIS based learning scheme to introduce intelligence in it. The testing data set is taken from training set. Validation data set is unseen data. RMSE and prediction accuracy are used as performance index. Two gaussian membership functions are taken for each input. Error goal was set for .001.Training was for 300 epochs. It is seen prediction accuracy was 91 percentages in testing case and 89 in validation. RMSE difference between validation and testing case very small.
- 2011-11-29 23:02:21下载
- 积分：1
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LDPC
说明： 详述LDPC码，有DVB_S2中LDPC编解码分析等以及KDH文档。(LDPC code in detail, there are DVB_S2 in the analysis of LDPC codec and KDH document.)
- 2009-08-09 20:38:45下载
- 积分：1
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viterbi_decoder_acs217
2,1,7卷积码译码s-function(2,1,7 Convolutional Decoding s-function)
- 2007-04-05 23:01:50下载
- 积分：1
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Nashgame
认知无线电分布式功率控制非合作博弈NASH均衡的实现基于价格函数以及DPC功率控制比较(Distributed cognitive radio power control non-cooperative game NASH equilibrium price function and the DPC-based power control more)
- 2011-11-26 10:52:38下载
- 积分：1
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通过matlab实现车联网下的资源分配
通过matlab实现车联网下的资源分配，包括用户、路边单元和基站，相关毕设可以使用(Matlab is used to realize the resource allocation under the vehicle network, including users, roadside units and base stations, which can be used in relevant settings.)
- 2020-10-15 18:37:29下载
- 积分：1
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IQerror
说明： 本程序研究IQ误差对线性调频信号匹配滤波的影响，仿真匹配滤波后信号幅相误差特性，仿真主瓣宽度、旁瓣电平的变化(This program studies the influence of IQ error on matched filtering of chirp signal, simulates the characteristics of signal amplitude and phase error after matched filtering, and simulates the change of main lobe width and side lobe level)
- 2020-05-17 22:41:22下载
- 积分：1
