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通信无线信道仿真-阴影衰落,对数正态分布-Communication radio channel emulation- the shadow fading, lognormal
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Ajey, S., B. Srivalli, et al. (2010). On performance of MIMO-OFDM based LTE systems. Wireless Communication and Sensor Computing, 2010. ICWCSC 2010. International Conference on.
4G wireless systems predominately employ multiple input multiple outp
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In wireless communications, fading is deviation of the attenuation that a carrier-modulated telecommunication signal experiences over certain propagation media. The fading may vary with time, geographical position and/or radio frequency, and is often
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该文件是包含通信系统仿真的诸多程序,包括衰落信道模型等,希望对大家有帮助。-The document includes a number of communication system simulation procedures, including fading channel model, we would like to help.
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本程序是移动通信中多径衰落信道的Matlab仿真,对移动通信中的瑞利信道、高斯白噪声信道、伦琴信道给出了simulink的系统模型,并在MATLAB中编写程序仿真。-This program is used for simulating the multi-path fading channel in mobile communication. The simulation tool is matlab. Rayleigh fading model,AWGN model and Rician f
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多径衰落信道下的通信系统建模仿真多径衰落信道下的通信系统建模仿真-Multipath fading channel modeling and simulation of communication systems
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内容包括MIMO通信系统简介,MIMO无线信道、信道传播衰落、空时块编码、空时格码、OFDM等。-About MIMO communication systems including, MIMO wireless channel, channel propagation fading, space-time block coding, space-time trellis codes, OFDM, etc.
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。研究了瑞利衰落信道下两跳放大前传协作中继系统的最优化功率分配问题。推导了高信噪比条件下的协作中继系统的中断概率的理论公式.
协作中继 放大前传 最优化功率分配 误符号率 中断概率-Optimal power allocation for two hops amplify- and- forward cooperative relaying communication systems in Rayleigh fading channel was studied.
cooperative
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浅海远程水声通信由于水声信道带来的严重多径干扰和衰落, 导致通信速率低、误码率高
以及接收端信噪比低等缺点。针对这一问题, 提出了一种比较有效的M 元线性调频(L FM ) 水声通
信技术。-Remote shallow water acoustic underwater communication channel because of the serious multi-path interference and fading, resulting in lower communica
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中文摘要
正交频分复用( OFDM , Orthogonal Frequency Division
Multiplexing)是当前一种非常热门的通信技术。它即可以被看作是一种
调制技术,也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱
利用率高的特点,因此被广泛应用于高速数字通信领域,比如应用于IEEE
802.11a无线局域网(WLAN)的物理层等等。
我的毕业设计的核心任务是:采用 FPGA 来实现一个基于OFDM 技术
的通信系统中的基带数据处
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mavin k. simon著,非常棒的一本数字通信方面的专著,很多内容是其它同类书上找不到的,本人费了好大劲找到的!-The mavin k. simon, a great digital communication monographs, many can not be found in other similar books, I take a great efforts to find!
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无线信道条件较为复杂,本程序提供的是瑞丽衰落信道模型下的无线通信仿真-Short wave communication channel conditions is complex, the program provides is Ruili fading channel model
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这篇文章主要讲述了等离子鞘套的信道特征,包括电子密度的分布还有以此关于天线位置的安装等问题,得出结论可以建模为快衰落的莱斯信道,对于临近空间飞行器的通信问题提供了理论依据,但鞘套内部通信特征还是一大问题-This article describes the plasma sheath channel characteristics, including the distribution of electron density and thus the installation of the an
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OFDM通信系统抗多径衰落性能仿真,最后给出不同信道下,循环前缀、均衡技术对系统误码率影响的比较曲线,并得出结论。-OFDM communication system simulation of multipath fading Finally, under different channel, cyclic prefix, equalization impact on the system bit error rate comparison curve, and draw conclusion
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本文在介绍MIMO无线通信系统模型的基础上,通过对比分析几种常用空时编码方法,选定空时分组码对信号进行编码并建立瑞利衰落信道模型,通过对两发一收及两发两收系统的仿真,研究接收天线数对系统接收信号可靠性的影响。之后进一步扩展到不同发射矩阵条件下研究多发一收系统的频谱利用率及误符号率,分析不同天线数目,不同发射矩阵条件下空时正交分组码检测算法的性能。-This paper introduced the MIMO wireless communication system model, through
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根据接收到的随机多径信号的不同幅度和到达时间,通过多径环境下的信道传输函数,仿真无线多径信道特性。深入理解多径衰落对移动通信传输技术的选择和数字接收机的设计-According to the different amplitude random of the received multipath signals and the arrival time, the channel transfer function in multipath environment, simulation of w
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OFDM is a multi-carrier transmission technique. It converts the frequency selective fading channel into a collection of parallel flat fading sub-channels which simplifies the structure of a receiver. OFDM has been widely used in communication system
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水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外,水声通信试验的成本高,难度大,也为水声通信研究带来挑战。
本软件对水声信道的仿真研究很有帮助,可以产生声线图,冲激响应,声速图等仿真文件,结合Matlab画图工具绘制图像,对水声信道的模拟仿真很有帮助。-The most difficult problem fac
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