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Description: OFDM：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-OFDM : Orthogonal Frequency Division Multiplexing (OFDM) is the fourth-generation mobile communication core technology. The article briefly introduces the basic principles of OFDM, focus on the ideal synchronous circumstances, Protection slot (counted ac cording) and different channel estimation method in Gaussian channel and multi-path Rayleigh fading channels of OFDM system performance. OFDM system is the model on the basis of MATLAB language of the entire system is computer simulation and reference design process
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Author: xoaxiao |
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Description: 该文件包括几篇比较关于LDPC编码核心的基础读物，还有关于LDPC开发的MATLAB仿真库和运用该库所进行的一些仿真源码-The documents include a few more LDPC coding on the basis of the core reading, also on the development of the LDPC MATLAB simulation library and use the library for the simulation source code
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Author: 刘泽凯 |
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Description: 一个通信系统的例程包,里面包括OFDM第四代移动通信核心等的仿真程序.用ELANIX公司的SYSTEMVIEW打开运行-a routine communication system kits includes OFDM fourth generation mobile communications core of the simulation program. ELANIX company with the SYSTEM VIEW open operation
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Author: a |
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Description: 基于第三代通讯wimax核心编码ofdm编码的matlab性能仿真-based on the third generation telecommunications wimax core coding ofdm coding Matlab Performance Simulation
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Author: james |
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Description: OFDM：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-OFDM : Orthogonal Frequency Division Multiplexing (OFDM) is the fourth-generation mobile communication core technology. The article briefly introduces the basic principles of OFDM, focus on the ideal synchronous circumstances, Protection slot (counted ac cording) and different channel estimation method in Gaussian channel and multi-path Rayleigh fading channels of OFDM system performance. OFDM system is the model on the basis of MATLAB language of the entire system is computer simulation and reference design process
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Author: xoaxiao |
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Description: 本代码是基于MIMO-OFDM系统下做的信道估计技术的研究。MIMO,OFDM是4G的核心技术，两者相结合的估计算法也是现在研究的热点。本代码包括几种核心的估计算法并可直接仿真出结果。-The code is based on MIMO-OFDM system channel estimation to do research. MIMO, OFDM is the core of 4G technology, a combination of both the estimation algorithm is now a hot research. The code includes several core estimation algorithm and simulation results directly.
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Author: 赵琪 |
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Description: gnuradio下ofdm系统的python实现。包括收发路径，fft变换，标准的ofdm程序。-ofdm system under gnuradio achieve python. Including the transceiver path, fft transform, ofdm standard procedures.
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Author: wujian |
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Description: Multi-Carrier Digital Communications Theory and Applications of OFDM
Second Edition
Multi-carrier modulation‚ Orthogonal Frequency Division Multiplexing
(OFDM) particularly‚ has been successfully applied to
a wide variety of digital communications applications over the past
several years. Although OFDM has been chosen as the physical layer
standard for a diversity of important systems‚ the theory‚ algorithms‚
and implementation techniques remain subjects of current interest.
This is clear from the high volume of papers appearing in technical
journals and conferences.
Multi-carrier modulation continues to evolve rapidly. It is hoped
that this book will remain a valuable summary of the technology‚ providing
an understanding of new advances as well as the present core
technology.-Multi-Carrier Digital Communications Theory and Applications of OFDM
Second Edition
Multi-carrier modulation‚ Orthogonal Frequency Division Multiplexing
(OFDM) particularly‚ has been successfully applied to
a wide variety of digital communications applications over the past
several years. Although OFDM has been chosen as the physical layer
standard for a diversity of important systems‚ the theory‚ algorithms‚
and implementation techniques remain subjects of current interest.
This is clear from the high volume of papers appearing in technical
journals and conferences.
Multi-carrier modulation continues to evolve rapidly. It is hoped
that this book will remain a valuable summary of the technology‚ providing
an understanding of new advances as well as the present core
technology.
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Author: ginobambino |
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Description: CFFT is a radix-4 fast Fourier transform (FFT) core with configurable data width and
a configurable number of sample points in the FFT.
Twiddle factors are implemented using the CORDIC algorithm, causing the gain of the
CFFT core to be different from the standard FFT algorithm. This variation in gain
is not important for orthogonal frequency division modulation (OFDM) and demodulation.
The gain can be corrected, to that of a conventional FFT, by applying a constant
multiplying factor.
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Author: Nagendran |
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Description: 码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统
（beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。-Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics.
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Author: w |
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Description: 正交频分复用(OFDM)是第四代移动通信的核心技术,它是实现多媒体业务发展的基础.讨论了如何利用Simulink进行OFDM系统仿真,并给出了具体的仿真模型.利用仿真模型得到OFDM差错性能分析结果,通过对结果的分析,提出了改善性能的方法.
-Orthogonal frequency division multiplexing (OFDM) is the core of the fourth generation mobile communication technology, it is the basis for the development of multimedia services. Discusses how to use Simulink for OFDM system simulation, and given the specific simulation model. Using the simulation model OFDM Error Performance Analysis of the results obtained through analysis of the results, proposed to improve performance.
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Author: w |
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Description: OFDM : Orthogonal Frequency Division Multiplexing (OFDM) is the fourth-generation mobile communication core technology. The article briefly introduces the basic principles of OFDM, focus on the ideal synchronous circumstances, Protection slot (counted ac cording) and different channel estimation method in Gaussian channel and multi-path Rayleigh fading channels of OFDM system performance
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Size: 1024 |
Author: kanniyappan/AIHT |
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Description: 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。-Orthogonal frequency division multiplexing (OFDM) is the fourth generation mobile communications core technology. This article first introduces the basic principles of OFDM, focus on the ideal synchronous case, protection time slot (CP) and different channel estimation in the Gaussian channel and multipath Rayleigh fading channel on the OFDM system performance. In the OFDM system model is given based on the MATLAB language with the computer simulation of the entire system and gives reference to the design process. Finally, in a different channel conditions, the protection time slot, channel estimation method for OFDM system, the comparison of bit error rate curves, obtained better results.
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Author: zhanpeng |
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Description: 3gpp-LTE是第三代移动通讯的过度，也称为3.9G,其中OFDM技术是其关键性核心，也是现在的研究热点。仿真了OFDMQPSK的经典编码-3gpp-LTE is the third generation mobile communication over, also known as 3.9G, which is the critical core of OFDM technology, is now the research focus. Simulation of the classic coding OFDMQPSK
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Author: liubinghong |
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Description: 正交频分复用(OFDM)是第四代移动通信的核心技术,它是实现宽带无线通信和多媒 体业务发展的基础。对OFDM 技术的基本原理，关键技术以及实现进行了研究，并且通过 matlab 中的通信仿真系统simulink 对OFDM 系统进行了模拟和分析，直观和形象地得到了 OFDM 系统在时域和频域的传输性能，得出的结果表明OFDM 系统可以明显地表现出抗多 径效应引起的频率选择性衰落和提高了频谱利用率，这一特性使得它能够在高数据传输速率 的无线信道中发挥优势。-Orthogonal Frequency Division Multiplexing (OFDM) is the fourth generation mobile communication core technology, which is broadband wireless communications and multimedia development. The basic principle of OFDM technology, key technology and implementation have been studied, and by matlab simulink simulation system in the OFDM communication system was simulated and analyzed, intuitive, and get the image of the OFDM system in time domain and frequency-domain transmission performance , the results show that OFDM system can be apparent in the anti-multipath effect caused by frequency selective fading and improve the spectrum efficiency, this allows it to transmit at high data rate wireless channel advantage.
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Author: foxlili |
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Description: 汪裕民《OFDM核心关键技术》书本后面的源程序代码，对初学OFDM系统的同学有很大的帮助，此程序完整的还原了正版书籍的参考程序。建议下载！-Wang Yumin OFDM core and key technologies of the books behind the source code, beginner students of the OFDM system of great help to complete this procedure to restore the genuine books of reference program. Recommended to download!
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Author: 何威 |
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Description: 这是用SIMULINK的S-FUNCTION方式编写的系统仿真代码，系统是基于4G网络的核心技术空时分组编码的MIMO-OFDM通信系统的，涉及到空间分集、时间分集和频率分集的有机结合，包括QPSK调制解调、IFFT调制、控制编解码、基于训练符号的信道估计等通信模块。包括main_STBC_MIMO_OFDM和training_symbol两个M文件和一个DOC文件，对各部分的都有详细的代码和注释。-It is used SIMULINK the S-FUNCTION approach to the preparation of the system simulation code, the system is based on the 4G network s core technology space-time block coded MIMO-OFDM communication system, involving spatial diversity, time diversity and frequency diversity of the organic combination, including QPSK modulation and demodulation, IFFT modulation, control of encoding and decoding, symbol-based channel estimation training and other communication module. Including main_STBC_MIMO_OFDM and training_symbol two M file and a DOC file, have detailed the various parts of the code and comments.
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Author: masong |
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Description: 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的发展状况及基本原理, 文章对OFDM 系统调制与解调技术进行了解析，得到了OFDM 符号的一般表达式，给出了OFDM 系统参数设计公式和加窗技术的原理及基于IFFT/FFT 实现的OFDM 系统模型。-Orthogonal frequency division multiplexing (OFDM) is the fourth generation mobile communication core technology. The article briefly describes the development of OFDM and the basic principles, the article OFDM system modulation and demodulation techniques are parsed to obtain a general expression of OFDM symbols, OFDM system design parameters are given formula and windowing technology works and based on the IFFT/FFT OFDM system model implemented.
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Author: 曾福来 |
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Description: MIMO-OFDM作为3G,4G的核心技术得到了广泛的关注-MIMO-OFDM as 3G, 4G core technology has been widespread concern
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Author: 流浪汉 |
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Description: 正交频分复用（OFDM）是一种通过快速傅里叶变换实现的多载波宽带数字调制技术。相比一般的数字通信系统。它具有频带利用率高和抗多径干扰能力强等优点，因而适合于高速率的无线通信系统。正交频分复用 OFDM 是第四代移动通信的核心技术。论文首先简要介绍了OFDM基本原理。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。-Orthogonal frequency division multiplexing (OFDM) is a fast Fourier transform of the multi-carrier wideband digital modulation through. Compared to the general digital communication system. It has high bandwidth efficiency and resistance to multipath interference ability, etc., which is suitable for high-speed wireless communications systems. Orthogonal frequency division multiplexing (OFDM) is a core technology of fourth generation mobile communication. Firstly, brief introduction to the basic principles of OFDM. On the basis of a given OFDM system model, using MATLAB language to achieve a computer simulation program and gives the reference design of the entire system.
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Author: 张生 |
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