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Description: useful paper:介绍一种新的高精度OFDM系统高精度信道估计方法-useful paper : Introduction of a new system of high-precision high-precision OFDM channel estimation method
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Size: 247808 |
Author: ave |
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Description: 单载波调制和OFDM调制各自的优缺点分析及应用前景-Single-carrier modulation and OFDM modulation analysis of the respective advantages and disadvantages and application prospects
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Size: 8192 |
Author: dq |
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Description: It s a IEEE paper.In this paper,the author proposed two new frequency synchronization unsing PN sequences for OFDM system.-It sa IEEE paper.In this paper, the author proposed two new frequency synchronization unsing PN sequences for OFDM system.
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Size: 189440 |
Author: fisher |
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Description: 本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.
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Size: 268288 |
Author: dajinyu |
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Description: 摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波
调制方式—i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果.
-Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of the simulation results.
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Size: 36864 |
Author: ma ming |
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Description: 认知无线电能有效缓解无线电频谱资源匮乏问题，正交频分复用（OFDM）非常适合认知无线电系统。动态频谱资源分配是认知系统的一项重要功能。本文的目标就是最小化成本函数，这个函数考虑到主用户以及次用户的干扰功率。-Cognitive radio (CR) is a promising concept for improving the utilization of scarce radio spectrum resources. Orthogonal frequency division multiplexing (OFDM) is regarded as a technology which is well-matched for CR systems. Dynamic resource allocation is an important task in such systems. A novel resource allocation algorithm for multiuser OFDM cognitive radio system is presented in this paper. The objective is to minimize a cost function which takes into account the interference
power experienced by the primary user as well as the base station transmit power for secondary users given minimum bit rate requirements for each secondary user.
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Size: 201728 |
Author: 洪波 |
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Description: 本文介绍了OFDM的相关技术以及实现原理，还介绍了OFDM的发展前途-In this paper, OFDM technology, as well as the realization of the principle, also described the future development of OFDM
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Size: 258048 |
Author: zuofeng |
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Description: 本文介绍了OFDM的相关技术以及实现原理，还介绍了OFDM的发展前途-In this paper, OFDM technology, as well as the realization of the principle, also described the future development of OFDM
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Size: 389120 |
Author: zuofeng |
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Description: 本文介绍了OFDM的相关技术以及实现原理，还介绍了OFDM的发展前途-In this paper, OFDM technology, as well as the realization of the principle, also described the future development of OFDM
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Size: 288768 |
Author: zuofeng |
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Description: 多用户MIMO-OFOM系统中的资源分配研究。
本文主要提出了两种基于多用户MIMO一OFDM系统的优化算法
-Multi-user MIMO-OFOM systems research resource allocation. In this paper, we propose two multi-user MIMO-based OFDM system, a optimization algorithm
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Size: 3073024 |
Author: 彭伟 |
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Description: 正交频分复用技术是近年来发展起来的新技术,在高速无线数据传输领域有很大的应用前景。文章在分析和总结相关文献的基础上,介绍了正交频分复用(OFDM)技术的发展历史,讨论了正交频分复用技术的基本原理和实现方法。通过分析表明,在高速无线通信中OFDM对于消除符号间干扰(ISI),降低系统的复杂度等方面具有很大优势。正交频分复用(OFDM)是一种多载波宽带数字调制技术,它能有效地克服传输中的多径干扰和消除码间串扰,适合于高速率的地面信道视频传输。本文就OFDM技术进行了较为详尽的分析,并对OFDM的传输特性进行了基于FFT算法实现的MATLAB软件模拟及模拟结果分析。 -OFDM is a new technology developed in recent years, high-speed wireless data transmission in the field of great applications. This paper analyzes and summarizes the basis of relevant literature, describes orthogonal frequency division multiplexing (OFDM) technology, history, orthogonal frequency division multiplexing discussed the basic principles and implementation methods. The analysis shows that in the high-speed wireless communication in OFDM symbol for the elimination of interference (ISI), and so reduce the complexity of the system has great advantages. Orthogonal frequency division multiplexing (OFDM) is a multi-carrier wideband digital modulation techniques, can effectively overcome the transmission of multi-path interference and the elimination of intersymbol interference, the ground for high-speed video transmission channel. In this paper, OFDM technology, a more detailed analysis, and transmission characteristics of OFDM FFT algorithm based on the MATLAB software simulation
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Size: 71680 |
Author: 罗萍 |
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Description: 基于导频的OFDM信道估计算法及性能分析pdf论文-Pilot-based OFDM channel estimation algorithm and performance analysis pdf paper
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Size: 205824 |
Author: chenxi |
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Description: ofdm ber using matlab for qpsk
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Size: 123904 |
Author: suryakiran |
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Description: 基于OFDM无线信道特性建模与仿真,这是一篇很好的解释，OFDM信道模型建立的论文，对于这方面的仿真有很大的参考意义。-OFDM-based wireless channel modeling and simulation, this is a good explanation, OFDM channel model of the paper, the simulation for this great reference value.
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Size: 2907136 |
Author: yilingzhu |
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Description: OFDM系统仿真程序和论文，包括系统的构造，及各部分的仿真-OFDM system simulation program and papers, including the system' s structure, and the part of the simulation
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Size: 613376 |
Author: 方芳 |
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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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Size: 311296 |
Author: Lakmali |
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Description: this paper on ofdm. it tells about the modules for ofdm that are necessary and their interfacing as well as working-this is paper on ofdm. it tells about the modules for ofdm that are necessary and their interfacing as well as working
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Size: 423936 |
Author: bakhtawar |
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Description: paper OFDM with impairments
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Size: 848896 |
Author: mohammed |
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Description: FDM技术由MCM（Multi-Carrier Modulation，多载波调制）发展而来。OFDM技术是多载波传输方案的实现方式之一，它的调制和解调是分别基于IFFT和FFT来实现的，是实现复杂度最低、应用最广的一种多载波传输方案。(This paper deals with the technologies of channel estimation and equalization for OFDM system.)
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Size: 6254592 |
Author: 冷血
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Description: 写论文找的STBC-MIMO-OFDM系统仿真程序(STBC-MIMO-OFDM system simulation program for writing paper)
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Size: 3072 |
Author: didala |
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