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ofdm
摘要:正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理,重点研究了理想同步情
况下,保护时隙(CP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系
统模型的基础上,用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序。最后给出在不同的信道条件下,保
护时隙、信道估计方法对OFDM系统误码率影响的比较曲线,得出了较理想的结论。
(O FDM is the key techno logy of 4G in the field of mobile comm unication.In this article O FDM
ba sic p rinc ip le is briefly in troduced.Then,the influence of CP and d iffe rent channe l e stim a tion on the system
pe rfo rm ance is emp ha tica lly analyzed respectively in Gauss and R ayle igh fading channe ls in the cond ition of ideal
synchronization.B e sides,based on the given system mode l O FDM system is compu te r sim u la ted w ith MA TLAB
language and the refe rentia l design p rocedure is given.Fina lly,the B ER cu rves of CP and channe l e stim ation a re
given and comp ared.The conclusion is sa tisfac to ry.
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- 2009-06-01 16:10:00下载
- 积分：1
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N-sparse
创建一个n维的稀疏数组对象，n是任意值。 定义N可能是大于2的一类n维稀疏阵列。然而，它应该被认为是一种起动方式与普通的MATLAB稀疏矩阵和重塑它有N维度。换句话说，稀疏的数据，首先必须能够作为一个普通的2D MATLAB稀疏矩阵被前n维。事实上，如果目标数组的尺寸mxnxp……yxz，然后将它存储在内部类是一个普通的二维稀疏阵列的尺寸（M×N×P×……×Y）XZ。这导致了某些内存株时使用大量的尺寸。我发现有用的类主要用于中等尺寸像三维图像边缘检测，你经常要举行一个稀疏的3D的边缘地图。(Creates an N-dimensional sparse array object, for arbitrary N.This submission defines a class of N-dimensional sparse arrays for N possibly greater than 2. However, it should really be thought of as a way of starting with an ordinary MATLAB sparse matrix and reshaping it to have N dimensions. In other words, the sparse data must first be able to exist as an ordinary 2D MATLAB sparse matrix before being made N-dimensional. In fact, if the intended array has dimensions MxNxP...YxZ, then the class will store it internally as an ordinary 2D sparse array of dimensions (M*N*P*...*Y)xZ. This leads to certain memory strains when using large numbers of dimensions. I find the class useful mainly for moderate dimensional things like edge detection in 3D imaging, where you often want to hold a sparse 3D edge map.
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- 2013-10-21 20:43:18下载
- 积分：1
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r_xy280059
毕设的题目，LTE无线信道建模，通过MATLAB仿真了包括多径信道，考虑了多普勒频移以及瑞利信道，考虑了 bkNLca参数以及 vTZKGVG衰落的多参数信道模型，调试正常。?(Complete set of topics, LTE channel modeling, simulation by MATLAB, including multipath channel, taking into account the Doppler shift and Rayleigh channel, considering the bkNLca parameter and multi-parameter vTZKGVG fading channel model, debugging normal.)
- 2016-01-17 11:56:18下载
- 积分：1
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MTI_radar
MTI雷达（动目标检测雷达）能够抑制杂波保留目标信号，本人提供了单延迟线MTI对消器频响，双延迟线MTI对消器频响，利用参差重频消除盲速影响，讨论MTI雷达参差比取不同的值对盲速的影响的matlab仿真源代码。(err)
- 2007-12-27 22:42:34下载
- 积分：1
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SVD_TLS
说明： 使用自编函数基于奇异值分解总体最小二乘法（svd-tls）实现AR模型谱估计
(The use of self-functions in general based on singular value decomposition least square method (svd-tls) to achieve AR model spectrum estimation)
- 2008-11-03 23:51:22下载
- 积分：1
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sfunctions
S-function is a powerful customized function that fits into the matlab environment.(This pdf contains instructions for build your own s-function.)
- 2012-07-20 01:39:04下载
- 积分：1
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2028022KL
上传的资料是有关模式识别中进行分类的KL变换，对原始图像进行KL变换并显示。(Upload information is related to pattern recognition classification KL transform, KL transform the original image and display.)
- 2014-12-04 19:18:15下载
- 积分：1
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nn
说明： Matlab写得神经网络的训练实例，包括BP，RBF，SOFM等多种网络，适合初学者(err)
- 2008-06-17 22:24:05下载
- 积分：1
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Matrix
自己编写的matlab简单计算，用于计算矩阵的加减乘与求逆，特征行列式等(I have written matlab simple calculation used to calculate the matrix addition and subtraction, multiplication and inversion, characteristic determinant, etc.)
- 2013-05-23 10:33:48下载
- 积分：1
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CMA-ES
CMAES算法matlab编程学习文件夹，希望对大家有所帮助！(
CMAES learning algorithm matlab program folder, we want to help!)
- 2014-04-10 19:55:54下载
- 积分：1
