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Description: uising different ICI self-cancellation scheme to see its performance-uising different ICI self-cancellation s cheme to see its performance
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Size: 60416 |
Author: 俞正元 |
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Description: 文中作者通过理论仿真详细分析了OFDM系统中子载波间干扰ICI对系统性能的影响-Author of the article through theoretical simulation of the OFDM system, a detailed analysis of neutron ICI ICI impact on system performance
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Size: 358400 |
Author: 王云峰 |
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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: ofdm ici self cancelation fah imp
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Size: 2048 |
Author: fahabb |
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Description: OFdm ici fah imp very good
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Size: 1025024 |
Author: fahabb |
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Description: ICI self cancelation mimo
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Size: 171008 |
Author: fahabb |
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Description: OFDM系统同步中的定时估计算法，主要使用了极大似然估计法。此程序实现极大似然估计法定时的程序。-OFDM system, synchronization of timing estimation algorithm, the main use of maximum likelihood estimation method. Realize this procedure maximum likelihood estimation when the statutory procedures.
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Size: 3072 |
Author: 张彩 |
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Description: 直接序列扩频的相关文章及matlab程序，以及ofdm中ici消除的论文。-Direct Sequence Spread Spectrum matlab relevant articles and procedures, as well as the elimination of ofdm thesis in ici.
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Size: 694272 |
Author: garfield |
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Description: OFDM(正交频分复用)技术实际上是MCM(Multi-Carrier Modulation，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-OFDM (Orthogonal Frequency Division Multiplexing) technology is MCM (Multi-Carrier Modulation, multi-carrier modulation) is. The main idea is to channel into a number of orthogonal sub-channel, high-speed data signals into sub-parallel low-speed data streams, modulation in the transmission on each channel. Orthogonal signal at the receiving end through the use of related technologies to separate, thus reducing the mutual interference between the channel (ICI). Each channel on the signal bandwidth is less than the relevant channel bandwidth on each channel of the decline can be seen as flat, make it possible to eliminate inter-symbol interference. And because of the bandwidth of each channel is the original channel only a small portion of bandwidth, channel capacity become relatively balanced
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Size: 87040 |
Author: siren |
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Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at moderate SNR
and is quite robust against possible model mismatch
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Size: 148480 |
Author: xiaobo |
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Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at
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Size: 84992 |
Author: xiaobo |
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Description: Phase noise resulting in Common Phase Error
(CPE) and Inter-Carrier Interference (ICI) is a critical challenge
to the implementation of OFDM systems. Modeling phase noise
as a stationary Gaussian random process with the specified
power spectrum density, different from conventional approaches
which mostly relay on pilots to provide CPE estimation, we
explore the statistical characteristics of the sufficient statistics
then propose a pilot-aided decision-directed approach according
to maximum-likelihood criterion. Numerical results demonstrate
that the proposed algorithm enjoys 2dB gain at moderate SNR
and is quite robust against possible model mismatch
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Size: 6144 |
Author: xiaobo |
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Description:
应用OFDM可以有效地对抗多径时延扩展。循环前缀不仅可以消除符号间干扰（ISI），还能消除子载波间干扰（ICI).本项目完整地仿真了OFDM系统。-Application of OFDM can effectively combat multipath delay spread. Cyclic prefix can not only eliminate inter-symbol interference (ISI), can eliminate Inter-carrier interference (ICI). This project a complete simulation of the OFDM system.
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Size: 41984 |
Author: 吏继斌 |
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Description: this about the ici cancellation technique for ofdm
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Size: 33792 |
Author: ashish |
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Description: 使用ICI自我相消的2種方法:分別是標準OFDM通訊系統下沒有使用ICI下，和使用ICI調變在OFDM通訊系統下 及指使用ICI解調變的ICI係數大小比較-The use of ICI self-phase elimination of two kinds of methods: namely the standard OFDM communication system is not used under the ICI, the modulation and the use of ICI in the OFDM communication system, and refers to the use of ICI under the demodulation of the ICI coefficient of more
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Size: 11264 |
Author: 鄭令儀 |
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Description: 正交频分复用其主要思想是：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 。-Orthogonal Frequency Division Multiplexing
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Size: 23552 |
Author: 江佩 |
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Description: 6. 在三条径的瑞利信道中，对于OFDM：
(1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。
-6. In the three path Rayleigh channel, for OFDM: (1) Please design a specific guide-assisted channel estimation method, the Simulink simulation, BPSK modulation measuring the bit error rate performance. Draw-bit signal to noise ratio and channel estimation mean square error of the curve, draw-bit signal to noise ratio and bit error rate curve.
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Size: 31744 |
Author: 曾茉 |
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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: contains the gui for ofdm frequency offset.
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Size: 404480 |
Author: abdullah |
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Description: Inter Carrier Interference (ICI) in OFDM due to frequency offset
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Size: 4096 |
Author: sun2012flower |
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