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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.
)
- 2009-06-01 16:10:00下载
- 积分：1
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KNN-complexity-reduced-method
基于LANDMARC的定位系统上进行的算法复杂度的减小的优化，包括了具体的优化后系统的实现，误差前后对比，改文章还提出了一种adaptive的定位算法，更利于外部变化环境下(In wireless networks, a client’s locations can be estimated using signal strength received from signal transmitters. Static
fingerprint-based techniques are commonly used for location estimation, in which a radio map is built by calibrating signal-strength
values in the offline phase. These values, compiled into deterministic or probabilistic models, are used for online localization. However,
the radio map can be outdated when signal-strength values change over time due to environmental dynamics, and repeated data
calibration is infeasible or expensive. In this paper, we present a novel algorithm, known as Location Estimation using Model Trees
(LEMT), to reconstruct a radio map by using real-time signal-strength readings received at the reference points. This algorithm can
take real-time signal-strength values at each time point into account and make use of the dependency between the estimated locations
and reference points. We show that this technique can effectively accommodat)
- 2011-02-11 22:16:05下载
- 积分：1
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Monte-Carlo-algorithm
说明： 蒙特卡洛算法一些matlaB程序，可以直接使用(Monte Carlo algorithm)
- 2021-03-21 21:09:16下载
- 积分：1
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ga
说明： binary genetic algorithm
- 2011-07-07 13:05:40下载
- 积分：1
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linear_array_Wiener_Holf
该matlab程序仿真了旁瓣对消系统，旁瓣对消是自适应阵列处理的重要方面(The matlab simulation, the sidelobe cancellation system of sidelobe cancellation is an important aspect of adaptive array processing
)
- 2021-04-16 14:28:53下载
- 积分：1
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AHPmethod
层次分析法（Analytic Hierarchy Process简称AHP）是将与决策总是有关的元素分解成目标、准则、方案等层次，在此基础之上进行定性和定量分析的决策方法。这里提出层次分析法的matlab源程序(AHP (Analytic Hierarchy Process referred AHP) is always associated with the decision-making elements into goals, guidelines, programs and other levels, on this basis for qualitative and quantitative analysis of decision-making methods. AHP presented here matlab source)
- 2013-09-13 11:38:13下载
- 积分：1
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math
此文件包含了matlab中几种常见的算法，便于初学者参考学习。(Detailed introduces the mathematical modeling of several common mathematical model and modeling method. Convenient first contacts the mathematical model of the people learn.
)
- 2012-05-07 11:01:01下载
- 积分：1
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braking-of-induction-motor
braking of induction motor.
- 2014-10-16 17:46:14下载
- 积分：1
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MT1D_FWD
大地电磁一维层状介质电磁响应程序，希望能对初学者有用(Magnetotelluric one-dimensional electromagnetic response program of layered media, the hope can be useful for beginners)
- 2015-04-16 15:37:03下载
- 积分：1
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Untitled
说明： 人脸识别算法PCA的可执行程序，识别率为88.5％，为matlab平台程序，大家共享吧(PCA Face Recognition Algorithm for the executable program, identification rate of 88.5 for matlab platform procedure, let everyone share)
- 2008-08-30 11:07:41下载
- 积分：1
