Search - ofdm pilots

Search - ofdm pilots - List

[Other resource] OFDMChannelEstimationBasedonCombPilot DL : 0: 基于梳状导频的ofdm信道估计matlab程序仿真源代码-comb-based pilots ofdm channel estimation procedures Matlab simulation source code
Update : 2008-10-13 Size : 2.86kb Publisher : wangfuli
[Web Server] uwb_sim DL : 0: 这是一个定点的多带OFDM物理层发射机/接收机模型,共122个子载波，22个导频，采用QPSK调制,5/8前向纠错码(删余卷积码.)-This is a sentinel of the multi-band OFDM physical layer transmitter / receiver model, a total of 122 sub-carrier. 22 pilots, using QPSK modulation, 5 / 8 prior to the error-correcting code (I delete convolutional codes.)
Update : 2008-10-13 Size : 113.64kb Publisher : ltj1974
[matlab] OFDMChannelEstimationBasedonCombPilot DL : 1: 基于梳状导频的ofdm信道估计matlab程序仿真源代码-comb-based pilots ofdm channel estimation procedures Matlab simulation source code
Update : 2025-02-17 Size : 3kb Publisher : wangfuli
[Communication-Mobile] uwb_sim DL : 0: 这是一个定点的多带OFDM物理层发射机/接收机模型,共122个子载波，22个导频，采用QPSK调制,5/8前向纠错码(删余卷积码.)-This is a sentinel of the multi-band OFDM physical layer transmitter/receiver model, a total of 122 sub-carrier. 22 pilots, using QPSK modulation, 5/8 prior to the error-correcting code (I delete convolutional codes.)
Update : 2025-02-17 Size : 113kb Publisher : ltj1974
[Communication] R1-091695 DL : 0: 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
Update : 2025-02-17 Size : 145kb Publisher : xiaobo
[Communication] R1-091775 DL : 0: 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
Update : 2025-02-17 Size : 83kb Publisher : xiaobo
[Communication] R1-092264 DL : 0: 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
Update : 2025-02-17 Size : 6kb Publisher : xiaobo
[Communication-Mobile] OFDM_with_pilot DL : 0: In this Mfile, I want to investigate the performance of LSE algorithm in OFDM channel estimation with methods of equalizations like MRC and ZF. For further information see the "Xiaodong Cai and Georgios B. Giannakis, Error Probability Minimizing Pilots for OFDM with M-PSK Modulation over Rayliegh-Fading Channels,” IEEE Transactions on Vehicular technology, vol. 53, No. 1, pp 146-155, Jan. 2004.
Update : 2025-02-17 Size : 28kb Publisher : Ardalan
[matlab] OFDM DL : 0: 本文在分析移动无线信道衰落特性的基础上,阐述了OFDM系统的基本原理,主要研究了OFDM通信系统中的基于导频符号的信道估计问题,分析了几种经典的信道估计算法以及相关的关键技术环节。在此基础上介绍了OFDM技术在现实中的一个应用——WLAN IEEE802.11a系统模型,利用Matlab仿真软件完成OFDM系统信号生成、噪声生成、导频插入、循环前缀、调制、解调等部分的设计,最后结合计算机仿真对系统关键技术(导频、循环前缀、估计算法)的有效性和可行性进行了全面的分析与比较。适合matlab研究-Based on the analysis of mobile channel fading characteristics based on the OFDM system on the basic principles of research in the OFDM communication system of the pilot symbols based on channel estimation problem, an analysis of several classical channel estimation algorithm and the associated key technical links. On this basis, introduced OFDM technology in a practical application- WLAN IEEE802.11a system model, using Matlab simulation software to complete OFDM signal generation, noise generation, pilot insertion, cyclic prefix, modulation, demodulation and other parts of the design, the final combination of computer simulation of the system of key technologies (pilots, cyclic prefix, it is estimated that algorithm) the effectiveness and feasibility of a comprehensive analysis and comparison. Suitable for research matlab
Update : 2025-02-17 Size : 1.28mb Publisher : 赵洪森
[matlab] QPSK_CE_block DL : 0: 该程序实现OFDM系统中块状导频的信道估计，块状导频用于时变较慢的多径信道，可以估计出每个载波上的信道传输情况。-The programme realizes channel estimation with block pilots.
Update : 2025-02-17 Size : 252kb Publisher : 唐鹤群
[Communication-Mobile] OFDM DL : 0: 该模型实现了一个通用的OFDM TX和RX，这是不依赖于任何特定的行业标准。该模型的目标是开发和研究不断（不是“突发”）载波同步和定时跟踪方案。该技术纳入然后可以扩展和修改，以标准的具体通讯套件。该模型采用了“收购”技术，它利用了循环前缀相关属性，以赶在试图完成罚款跟踪算法一帧的边界粗略的估计。该模型实现了一个16点64循环前缀的OFDM载波波形。在OFDM符号有16个飞行员，3后卫音（0，带边幅），并使用45 QAM的剩余数据流4。这包括最新型的衰落信道，误码率计算，并改善控制回路动态。-This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop and explore a continuous (not “bursty”) carrier and timing tracking synchronization scheme. The techniques incorporated can then be extended and modified to suite specific communications standards. The model uses an “acquisition” technique that exploits the correlation properties of the cyclic prefix to get a rough estimate of the frame boundary before attempting to accomplish the fine tracking algorithms. The model implements a 64 carrier OFDM waveform with a 16 point cyclic prefix. The OFDM symbol has 16 pilots, 3 guard tones (0 amplitude at band edge) and uses 4 QAM for the 45 remaining data streams. This latest model includes a fading channel, BER computation, and improved control loop dynamics.
Update : 2025-02-17 Size : 287kb Publisher : zaaa
[matlab] 10[1].1.1.66.2227 DL : 0: In this paper, we present a novel data-based method for simultaneous Maximum Likelihood (ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision multiplexing (OFDM) systems. Statistical properties introduced by the cyclic pre痻, a guard space between OFDM symbols, provide su眂ient information about the unknown parameters. It is shown that the redundancy introduced by this cyclic pre痻 allows the estimation to be performed without additional pilots. Simulations show that the performance of the frequency estimator is applicable in a tracking mode while the timing estimation can be used in an acquisition mode.
Update : 2025-02-17 Size : 500kb Publisher : ashish
[Program doc] A-Channel-Estimation-Technique-in-OFDM-Systems--U DL : 0: A Channel Estimation Technique in OFDM Systems Using No Pilots-A Channel Estimation Technique in OFDM Systems Using No Pilots
Update : 2025-02-17 Size : 210kb Publisher : sayed
[Other] Rayleigh_ofdm DL : 0: OFDM通过瑞丽信道的仿真,在载波数为200，驯良符号数为5，调制方式为QAM-Simulations about OFDM pilots go through the rayleigh channel，that is subcarriers:200,training blocks:5,modulation:QAM,channel delay:5s,simulation condition:synchronise strictly
Update : 2025-02-17 Size : 3kb Publisher : 张权辉
[3G develop] SYSTEM-OF-OFDM-AND-MATLAB-SIMULATOR DL : 0: 这是OFDM系统中基于导频的信道估计及其MATLAB仿真，详细描述了OFDM的信道估计和matlab仿真。有益于研究OFDM系统的资料-This is the pilots to estimate the channel response and its MATLAB simulation based on OFDM system, a detailed description of the channel estimation and MATLAB OFDM simulation. Beneficial to the research of OFDM system data
Update : 2025-02-17 Size : 291kb Publisher : 黄佳吉
[3G develop] Untitled3 DL : 0: ofdm symbol generation and pilots
Update : 2025-02-17 Size : 1kb Publisher : waqas
[Mathimatics-Numerical algorithms] Continuous-Synchronization-of-OFDM DL : 0: 该模型实现一个不依赖于任何特定的行业标准通用的连续同步OFDMOFDM模型TX和RX。这个模型的目的是开发和探索出一条连续的（而不是“突发”）的载波和定时同步跟踪计划。然后使用该技术可以扩展和修改特定通信标准。-This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop and explore a continuous (not “bursty”) carrier and timing tracking synchronization scheme. The techniques incorporated can then be extended and modified to suite specific communications standards. The model uses an “acquisition” technique that exploits the correlation properties of the cyclic prefix to get a rough estimate of the frame boundary before attempting to accomplish the fine tracking algorithms. The model implements a 64 carrier OFDM waveform with a 16 point cyclic prefix. The OFDM symbol has 16 pilots, 3 guard tones (0 amplitude at band edge) and uses 4 QAM for the 45 remaining data streams.
Update : 2025-02-17 Size : 323kb Publisher : 林真天
[matlab] SCDofOFDM DL : 0: this matlab code treats the ofdm signal in WIFI standard and calculates its SCD(spectral correlation density) ,the generation of pilots , guard time cyclic prefix -this matlab code treats the ofdm signal in WIFI standard and calculates its SCD(spectral correlation density) ,the generation of pilots , guard time cyclic prefix ...
Update : 2025-02-17 Size : 21kb Publisher : nesrine
[matlab] program15_ofdm_pilot_estimation DL : 0: channel estimation for ofdm using pilots
Update : 2025-02-17 Size : 1kb Publisher : sudip
[3G develop] OFDM DL : 0: Channel estimation techniques for OFDM systems based on a pilot arrangement are investigated. Channel estimation based on a comb type pilot arrangement is studied through different algorithms for both estimating the channel at pilot frequencies and interpolating the channel. Channel estimation at pilot frequencies is based on LS and LMS methods while channel interpolation is done using linear interpolation, second order interpolation, low-pass interpolation, spline cubic interpolation, and time domain interpolation. Time-domain interpolation is obtained by passing to the time domain by means of IDFT (inverse discrete Fourier transform), zero padding and going back to the frequency domain by DFT (discrete Fourier transform). In addition, channel estimation based on a block type pilot arrangement is performed by sending pilots in every sub-channel and using this estimation for a
Update : 2025-02-17 Size : 3kb Publisher : MUHAMMAD SHAKIL

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