Description: OFDM的基本原理和信道均衡以及峰值功率的控制-OFDM and the fundamental principles channel equalization and peak power control Platform: |
Size: 193536 |
Author:Heaton |
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Description: OFDM程序示例：采用64子信道，应用16QAM传输，每个子载波均传输相同的比特数4，不使用信道编码；使用迫零均衡和MMSE均衡，比较两者性能。-OFDM procedures Example: a 64-channel, application 16QAM transmission, each transmission subcarriers are the same number of bits 4, do not use channel coding the use of force balance and MMSE zero balance, compare the performance. Platform: |
Size: 2048 |
Author:穆佳 |
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Description: 这是关于OFDM无线宽带移动通信系统中信道估计与均衡技术研究方面的一篇好文章-This is on the OFDM wireless broadband system for mobile communications channel estimation and equalization of a good research article Platform: |
Size: 2198528 |
Author:yufe |
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Description: OFDM简单链路，包含信道估计和信道均衡，算法包括LS和MMSE-OFDM simple links, including channel estimation and channel equalization, algorithms, including the LS and MMSE Platform: |
Size: 2048 |
Author:赵晴 |
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Description: 信道均衡技术是移动通信中抗衰落的三大技术之一。均衡是用来解决由于信道的非线性和时变性引起的码间干扰的有效技术。如何有效解决码间干扰问题，具有重要的理论意义。 本文在介绍自适应均衡技术的基本原理和均衡研究现状的基础上，阐述了目前几种典型的自适应均衡算法及其它们存在的一些问题。文章在传统自适应算法的基础上，提出了两种改进算法：基于RLS的自适应MIMO-DFE算法和基于分数间隔的改进CMA+SDD算法。计算机仿真结果表明，两种算法的收敛速度快，稳态误差小，均衡效果与传统算法相比都取得了明显提高。-Channel equalization in mobile communications technology is the anti-fading of the three technologies. Balance is used to solve due to channel non-linear and time-varying inter-symbol interference caused by effective techniques. How to effectively solve the inter-symbol interference problem, has important theoretical significance. This paper introduces the basic principle of adaptive equalization and balanced study of the status quo, based on the current set of several typical adaptive equalization algorithm and some of the problems of their existence. Article in the traditional adaptive algorithm based on the proposed two improved algorithms: RLS-based adaptive MIMO-DFE algorithms and interval-based scores improved CMA+ SDD algorithm. Computer simulation results show that the two kinds of convergence of the algorithm fast, steady-state error is small, compared to equilibrium results with the traditional algorithms have achieved significantly improved. Platform: |
Size: 43012096 |
Author:阿郎 |
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Description: 主要是Peter Zillmann, Wolfgang Rave, and Gerhard Fettweis编写的turbo码在ofdm中信道均衡的文章。-Mainly Peter Zillmann, Wolfgang Rave, and Gerhard Fettweis prepared turbo codes for channel equalization in ofdm article. Platform: |
Size: 197632 |
Author:xjn |
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Description: 传统均衡器无法有效地同时对抗这两种信道衰落，而Turbo均衡技术作为一种联合信道均衡和信道译码的方法，能有效地对抗符号间干扰（ISI），提供迭代增益，提高接收机的整体性能。因此，本文根据下一代无线通信系统的设计要求，分别对单载波和OFDM系统的Turbo均衡算法进行了研究。
-Conventional equalizer can not effectively fight both at the same time fading, while the Turbo equalization as a joint channel equalization and channel decoding method is robust against inter-symbol interference (ISI), provides iteration gain, improved receiver overall performance. Therefore, this next-generation wireless communication system according to the design requirements, namely, the single carrier and OFDM systems Turbo equalization algorithm is studied. Platform: |
Size: 703488 |
Author:w |
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Description: OFDM系统中时域均衡的仿真和结果分析，先对搭建的最基本的OFDM系统性能进行仿真分析，然后对在多径信道下的OFDM系统性能进行仿真分析，最后对MMSE算法进行仿真分析。-OFDM system, time domain equalization and results of the simulation analysis, the first of the basic structures of the simulated OFDM system performance analysis, and multi-path channel in the OFDM system performance under simulated and analyzed, the final simulation of the MMSE algorithm. Platform: |
Size: 180224 |
Author:郑永钊 |
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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. Platform: |
Size: 311296 |
Author:Lakmali |
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Description: 一个包含信道估计和均衡的ofdm系统的matlab程序 实用易懂-Includes a channel estimation and equalization of ofdm matlab program practical and easy to understand system Platform: |
Size: 8192 |
Author:段一 |
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Description: 给出了OFDM在卫星通信中的系统框图并
在Simulink中仿真实现，利用改进的CMA恒模算法进行盲均衡处理，来去除时变卫星信道对信号的影响,基于4阶累积量的方法
将OFDM信号与其他调制类型信号区分开来-OFDM is given in the satellite communication system block diagram and Simulation in Simulink using the modified constant modulus algorithm CMA for blind equalization, to remove the time-varying satellite channel on the signals, based on 4-order cumulant method OFDM signals and other types of signal modulation to distinguish Platform: |
Size: 3167232 |
Author:赵亮 |
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Description: OFDM中的信道均衡技术对于研究如何消除噪声干扰以及去除相位偏移的有着重要的作用-OFDM channel equalization techniques in the study of how to eliminate noise and to remove the phase offset has an important role in Platform: |
Size: 1368064 |
Author:闫城 |
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Description: main函数调用的子函数均可以随意修改,使用方便
模块包括：流程控制模块、卷积编译码模块、交织解交织模块、调制解调模块、OFDM调制解调模块、信道模块(为多径rayleigh信道)、均衡模块
可以正常运行,绝对适合做OFDM研究使用,有详细的注释,我自己写的,很容易理解.
经典收藏!!
-The main function calls the subfunctions are free to modify, easy to use modules including: flow control module, convolution encoding and decoding module, interleaving solution intertwined module modem modules, the OFDM modem module, channel module (multipath rayleigh channel ), equalization module can operate normally, absolutely suitable for OFDM study used detailed notes, I wrote it myself, it is easy to understand. classic collection! Platform: |
Size: 139264 |
Author:刘强 |
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Description: 无线信道估计：基于mimo和ofdm信道估计理论，算法。包括
MIMO衰落信道的测量和建模方法；
MIMO信道容量的分析；
基于MIMO的空时编/解码方法；
基于MIMO的接收机关键技术，如信道估计、均衡、多用户检测等。
-Radio channel estimation: theory, algorithms based mimo ofdm channel estimation. Include
MIMO fading channel measurement and modeling
MIMO channel capacity analysis
Encoding/decoding method based on MIMO empty
Based on the the MIMO receiver key technologies, such as channel estimation, equalization, multiuser detection. Platform: |
Size: 1314816 |
Author:龙川 |
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Description: OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，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，从而可以消除码间串扰。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。-OFDM (Orthogonal Frequency Division Multiplexing) that is orthogonal frequency division multiplexing, OFDM is actually MCM Multi-CarrierModulation, a multi-carrier modulation. The main idea is: The channel is divided into a number of orthogonal sub-channel, high-speed data signal into parallel low-speed data streams, modulated to be transmitted on each subchannel. Quadrature signal at the receiving end can be separated using technologies, which can reduce the mutual interference between ICI subchannels. Signal is less than the bandwidth of each sub-channel coherence bandwidth of the channel, each subchannel can be regarded as flat fading, which can eliminate inter-symbol interference. And because the bandwidth of each subchannel is only a small part of the original channel bandwidth, channel equalization becomes relatively easy. Platform: |
Size: 321536 |
Author:mixa |
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Description: OFDM(Orthogonal Frequency Division Multiplexing)即正交频分复用技术，实际上OFDM是多载波调制的一种。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。-OFDM (Orthogonal Frequency Division Multiplexing) that is orthogonal frequency division multiplexing, in fact, is a multi-carrier OFDM modulation. The main idea is: The channel is divided into a number of orthogonal sub-channel, high-speed data signal into parallel low-speed data streams, modulated to be transmitted on each subchannel. Quadrature signal at the receiving end can be separated using technologies, which can reduce the mutual interference between ICI subchannels. The signal bandwidth of each subchannel is less than the channel coherence bandwidth, and therefore can be regarded as flat fading on each sub-channel, thereby eliminating inter-symbol interference. And because the bandwidth of each subchannel is only a small part of the original channel bandwidth, channel equalization becomes relatively easy. Platform: |
Size: 2048 |
Author:刘金星 |
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Search - ofdm channel equalization