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Description: OFDM的仿真，这种技术wimax已经采用，未来的4G肯定也是基于这种技术。附件是源代码，仅供大家参考！ -OFDM simulation, WiMAX technology has been adopted as the future 4G is definitely based on the technology. The annex to the source code, only your reference!
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Author: 刘奕 |
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Description: 详细的介绍OFDM的中文书，内容简单易懂适合初学者-detailed introduction to the book OFDM, which is simple to understand for beginners
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Size: 4897792 |
Author: kai-sing |
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Description: 4G通信关键技术演进
随着世界范围内第三代移动通信系统逐步实施，移动通信未来的发展及演进问题成了研究热点。本文介绍了第四代移动通信及其性能和系统网络结构及OFDM、软件无线电、智能天线、IPv6等关键技术，并分析了4G移动通信系统与3G移动通信的关系，并对通信系统演进做了展望。 -Communication the key to the evolution of 4G technology around the world with the third-generation mobile communication system being implemented gradually and the future development of mobile communications and the evolution of research has become an issue of hot spots. This paper introduces the fourth generation mobile communication system network and its performance and structure and OFDM, software radio, smart antenna, IPv6 and other key technologies, and analyzes the 4G mobile communication system and the relationship between the 3G mobile communications and the evolution of communication systems to do the Prospect.
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Size: 67584 |
Author: exiaohu |
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Description: 4G无线通信系统中关键技术OFDM的系统仿真平台-4G wireless communication systems in key technology OFDM system simulation platform
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Size: 218112 |
Author: 杨阳 |
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Description: 4G无线移动通信中关键技术MIMO的信道模型源代码-4G wireless mobile communications in the key technologies of the MIMO channel model source code
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Size: 1024 |
Author: 杨阳 |
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Description: ofdm是今年来通信领域一种新兴的技术，正交频分复用同时也是4G的关键技术-OFDM is the beginning of this year, an emerging communications technology, orthogonal frequency division multiplexing is also a key technology 4G
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Size: 26624 |
Author: 张峻维 |
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Description: 在通信网络中，接入技术自始至终都是发展的热点。从时分、频分、码分到目前的空分，
从TDMA、CDMA到OFDMA，从单天线到智能天线，先进的技术日新月异，层出不穷。而随着这些新
技术的涌现，WiMAX网络也逐渐成为下一代通信系统的竞争者。很多人认为WiMAX即使无法最终
取代3G，也将是构建未来4G网络的基础，因此很多国际通信设备厂商对于正在兴起的WiMAX寄予
厚望，北电网络甚至放弃了传统3G的研发而专攻WiMAX。 -In the communications network, access technology throughout the development of hot spots. From midnight, frequency division, code assigned to the current air separation, from TDMA, CDMA to OFDMA, from a single antenna to the smart antennas, advanced technology with each passing day, one after another. With the emergence of these new technologies, WiMAX network is becoming the next generation of communication systems competitors. Many people think that WiMAX if not eventually replace 3G, will also be building a foundation for future 4G networks, so many international communications equipment manufacturers who are high hopes for the emergence of WiMAX, Nortel Networks or even to abandon the traditional 3G research and development and specializing in WiMAX.
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Size: 202752 |
Author: yangyin |
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Description: ofdm程序，在无线通信中，4G通信的完整仿真程序-ofdm
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Size: 515072 |
Author: GeneralLee |
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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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Size: 2048 |
Author: 赵琪 |
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Description: 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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Size: 9216 |
Author: 海之魂 |
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Description: 协作通信基础,包括协作编码，认知无线电相关内容，以及其在4G，ad-hoc网络、OFDM系统中的应用，可作为入门资料，英文版。-cooperativecommunication
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Author: emma |
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Description: Technical features of the wireless network generation antenna schemes and the modulation systems. A look on the specifications the MIMO-OFDM 4G communication system.
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Size: 406528 |
Author: jenna |
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Description: simulation code about 4G system in cellphone OFDM.
From transmitter ,channel ,receiver..etc.
-simulation code about 4G system in cellphone OFDM.
From transmitter ,channel ,receiver..etc.
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Size: 6144 |
Author: allen |
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Description: Beyond third generation (B3G) and fourth
generation (4G) communication systems require
bandwidth efficiency and low complexity receivers to
accommodate high data rate and large number of
users per cell. This paper provides the
recommendations for why Interleave Division Multiple
Access (IDMA) stands out among all the present day
multiple access systems. Even if IDMA is a special
case of Code Division Multiple Access (CDMA), it
simply trounces CDMA as far as the cell capacity is
concerned. In IDMA, interleavers are used as the only
means for user separation. Interleaver size can be
varied for a set of users but the recommended
interleaver size is 1024bits at which it provides better
efficiency and minimum processing delay.
Investigations carried throughout this paper are while
using 1024 bit interleavers. IDMA exhibits the
tendency to handle huge number of users.
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Size: 366592 |
Author: raghaw |
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Description: OFDM,实际上OFDM是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。在向B3G/4G演进的过程中，OFDM是关键的技术之一，可以结合分集，时空编码，干扰和信道间干扰抑制以及智能天线技术，最大限度的提高了系统性能。-OFDM
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Size: 6144 |
Author: 王龙 |
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Description: OF,实际上OF是MCM Multi-CarrierModulation，多载波调制的一种。其主要思想是：将信道分成若干正交子信道，将高速数据信号转换成并行的低速子数据流，调制到在每个子信道上进行传输。正交信号可以通过在接收端采用相关技术来分开，这样可以减少子信道之间的相互干扰 ICI 。每个子信道上的信号带宽小于信道的相关带宽，因此每个子信道上的可以看成平坦性衰落，从而可以消除符号间干扰。而且由于每个子信道的带宽仅仅是原信道带宽的一小部分，信道均衡变得相对容易。在向B3G/4G演进的过程中，OFDM是关键的技术之一，可以结合分集，时空编码，干扰和信道间干扰抑制以及智能天线技术，最大限度的提高了系统性能。-OF
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Size: 6144 |
Author: 王龙 |
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Description: 用matlab来仿真ofdm调制算法，ofdm技术用于4G无线通信系统。-Ofdm simulation using matlab to modulation algorithm, ofdm technology for 4G wireless communications systems.
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Size: 73728 |
Author: 高 峰 |
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Description: MIMO OFDM for 4G networks
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Size: 625664 |
Author: BADMAN |
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Description: 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 output (MIMO) with an orthogonal frequency division multiplexing (OFDM) system. Like other 4G systems long term evolution (LTE) also employs MIMO-OFDM physical layer. MIMO helps in increasing the throughput whereas OFDM converts a frequency selective fading channel to multiple flat fading sub-channels facilitating easy equalization. It is proposed that LTE system should mandatorily support 2Ã — 2 MIMO setup. Our paper focuses on the performance of such a LTE system with two transmit antennas and two receive antennas in a frequency selective fading environment.
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Author: Lakmali |
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Description: 该文档描述了关于4G和B3G的物理层传输关键技术的主要内容，包括MIMO、OFDM、OTDM、智能天线、接入技术以及SDR等知识-This document describes the 4G and B3G on the physical layer transmission main key technologies, including MIMO, OFDM, OTDM, smart antennas, access to technology and the knowledge of SDR
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Size: 1899520 |
Author: 郭悦 |
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