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信道估计算法     
相关语句
  channel estimation method
     Channel estimation method in MIMO-OFDM system
     MIMO-OFDM系统的信道估计算法
短句来源
     To simplify the complexity of channel estimation and data detection at the receiver,a simple channel estimation method for ZP-OFDM(zero padding orthogonal frequency division modulation) system is proposed.
     为简化接收端信道估计和数据检测的复杂度,对使用零保护间隔(zero padding,ZP)的正交频分复用(orthogonal frequency division modulation,OFDM)系统提出一种简单的数据处理和信道估计算法
短句来源
     Channel estimation method by using OFDM based orthogonal channels
     一种基于OFDM的正交通道信道估计算法
短句来源
     As for MIMO-OFDM channel estimation algorithms, the author not only improves and extend the existing time-domain channel estimation method based on MMSE principle, but also derives the optimal preamble design principle from the MMSE aspect.
     针对MIMO-OFDM信道估计算法,作者改进和推广了现有的基于MMSE准则的时域信道估计算法,并从理论上推导出最优的Preamble设计原理。
短句来源
     In connection with coded decision directed demodulation (CD3) channel estimation method for coherent demodulation of orthogonal frequency division multiplex (OFDM) presented by Mignone V. and Morello A. , two kinds of improved channel estimation approaches are introuced.
     针对 Mignone V.和 Morello A. 提出的正交频分复用 OFDM( orthogonal frequency division multi-plex)系统编码直接判决解调 CD3( coded decided directed demodulation)信道估计算法在频率选择性信道下估计性能稍差 ,且对多普勒频移敏感的缺点 ,提出了两种改进算法。
短句来源
更多       
  channel estimation algorithm
     2×1-D OFDM Channel Estimation Algorithm and Its Application to IEEE 802.16e Systems
     2×1-D OFDM信道估计算法及其在IEEE 802.16e系统中的应用
短句来源
     Adaptive Channel Estimation Algorithm for DVB-T/H Systems
     一种适用于DVB-T/H系统的自适应信道估计算法
短句来源
     Channel Estimation Algorithm for COFDM System
     COFDM系统的信道估计算法
短句来源
     Channel Estimation Algorithm for DRM Receiver
     用于DRM接收机的信道估计算法
短句来源
     An EM Channel Estimation Algorithm for Iterative Detection of MC-CDMA Systems
     MC-CDMA系统迭代检测中的一种基于EM的信道估计算法
短句来源
更多       
  channel estimation algorithms
     Review on the Channel Estimation Algorithms for MIMO-OFDM Systems
     MIMO-OFDM系统信道估计算法综述
短句来源
     Study on Channel Estimation Algorithms for Mimo-OFDM System in Wireless Fading Channels
     无线衰落信道下MIMO-OFDM系统的信道估计算法研究
短句来源
     Study on Channel Estimation Algorithms for OFDM Systems
     OFDM系统中的信道估计算法研究
短句来源
     Research on the Channel Estimation Algorithms in MIMO-OFDM System
     MIMO-OFDM系统的信道估计算法研究
短句来源
     Channel Estimation Algorithms for Broadband MIMO-OFDM Systems
     宽带MIMO-OFDM系统信道估计算法研究
短句来源
更多       
  channel estimate algorithm
     With the diversity gain, the principle and technique of simplifying the channel estimate algorithm, structure and decreasing the complexity are discussed in detail. The integrative efficiency of the system combining the array antenna with the joint detection is analyzed.
     详细讨论了阵列天线分集增益对简化信道估计算法、结构和降低计算复杂度的原理和方法,分析了将阵列天线和多用户联合检测结合在一起时系统所具有的综合效能。
短句来源
     The channel estimate algorithm of joint detection for CDMA system when the array antenna is employed is studied in this paper.
     本文研究了CDMA系统在采用阵列天线接收时进行多用户联合检测的信道估计算法
短句来源
     Due to the diversity gain, the principle and concrete technique of simplifying the channel estimate algorithm and structure and decrease the complexity are discussed in detail. The integrative efficiency of the system which combines the array antenna with the joint detection is analyzed.
     文中详细讨论了阵列天线分集增益对简化信道估计算法、结构和降低计算复杂度的原理和具体方法,分析了将阵列天线和多用户联合检测结合在一起时系统所具有的综合效能。
短句来源
     With the diversity gain,the principle and technique of simplifying the channel estimate algorithm and structure and how to reduce the complexity are discussed. The integrative efficiency of the system combining the array antenna with the joint detection is analyzed.
     文中详细讨论了阵列天线分集增益对简化信道估计算法、结构和降低计算复杂度的原理和方法 ,分析了将阵列天线和多用户联合检测结合在一起时系统所具有的综合效能 .
短句来源
     If the channel estimate algorithm is too complicated and inaccurate,it must be a bad influence to the later algorithms.
     如果信道估计算法太复杂和不够准确都将对后面的算法实现产生不利影响。
短句来源

 

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      channel estimation method
    In this paper, with the subspace method and the delay character of delay diversity, a channel estimation method is proposed, which does not use training symbols.
          
    Subspace-based blind channel estimation method for MIMO-OFDM systems
          
    This paper proposes an extended Kalman filtering-based (EKF-based) channel estimation method for space-time coded MIMO-OFDM systems.
          
    This paper deals with a blind channel estimation method for space-time coded block transmission system.
          
    Channel Estimation Method with Improved Performance for the UMTS-TDD Mode
          
    更多          
      channel estimation algorithm
    This letter presents a blind channel estimation algorithm based on noise subspace theory which can acquire channel information without any training symbols.
          
    A novel link adaptation scheme using linear Auto Regressive (AR) model channel estimation algorithm to enhance the performance of auto rate selection mechanism in IEEE 802.11g is proposed.
          
    Furthermore, a simple channel estimation algorithm is proposed which is appropriate for the SIMD DSP computation.
          
    And a channel estimation algorithm based on the average packet loss rate and the variance of packet loss rate is proposed also.
          
    Two-Stage Channel Estimation Algorithm for?TD-SCDMA System Employing Multi-Cell Joint Detection
          
    更多          
      channel estimation algorithms
    Based on the acquired timing information, channel estimation algorithms are also developed which are competitive with the previously proposed subspace based channel estimation algorithms.
          
    This must be ensured by appropriate channel estimation algorithms and/or by an additional pilot boost.
          
    These stored symbols are used to verify adaptive channel estimation algorithms offline.
          


    Channel vector estimation is a key to smart antenna. Recently some estimation and recursive tracking algorithms are produced, however, the algorithms are rather complex, unstable and are not easy to be realized by VLSI. The objective of this paper is to study the performance of a noniterative subspace tracking algorithm in mobile CDMA, including tracing's mismatch loss, convergence and system capacity. The array response vector of the uplink channel can be estimated by computing the principal eigenvector of...

    Channel vector estimation is a key to smart antenna. Recently some estimation and recursive tracking algorithms are produced, however, the algorithms are rather complex, unstable and are not easy to be realized by VLSI. The objective of this paper is to study the performance of a noniterative subspace tracking algorithm in mobile CDMA, including tracing's mismatch loss, convergence and system capacity. The array response vector of the uplink channel can be estimated by computing the principal eigenvector of data covariance matrix, which can be decomposed into an one\|dimension signal subspace and multiple\|dimension noise subspace. By averaging the noise subspace, we convert the principal eigenvector update into 2×2 eigen problem, which largely reduce the computation. Simulation result show that this method can track the mobile user real time and the SNR loss due to estimation error is less than 0.5dB.

    矢量信道估计是智能天线技术的一个关键之处.近来,已有人提出了CDMA上行信道的估计算法及递归跟踪算法,但算法仍很复杂、不稳定,且不易用VLSI实现.根据存在问题,我们研究一种非迭代子空间跟踪算法在CDMA移动环境中的性能,包括跟踪的匹配误差、收敛速度、系统容量.上行信道的阵列响应矢量可由接受数据的相关矩阵的主特征矢量来估计,我们将数据相关矩阵分解成一维信号子空间和多维的噪声子空间,并对噪声子空间采用平均的方法,使主特征矢量的更新变成了2×2的特征问题,大大地降低了计算复杂度.计算机仿真结果表明,该方法能实时地跟踪移动速度很快的用户,而由估计误差带来的信噪比损失小于0.5dB

    Updated Wideband CDMA (WCDMA) systems empoly coherent detection either by the ever existing Common Pilot Channel (CPICH),or by periodically inserting pilot symbols in the data stream.A RAKE receiver for WCDMA downlink physical channel with the channel estmation by the CPICH is presented.Analytic and simulation results show that the RAKE receiver proposed here performs better in the fast fading channels and has considerably less computational complexity than the receiver with pilot symbol aided channel estimation,especially...

    Updated Wideband CDMA (WCDMA) systems empoly coherent detection either by the ever existing Common Pilot Channel (CPICH),or by periodically inserting pilot symbols in the data stream.A RAKE receiver for WCDMA downlink physical channel with the channel estmation by the CPICH is presented.Analytic and simulation results show that the RAKE receiver proposed here performs better in the fast fading channels and has considerably less computational complexity than the receiver with pilot symbol aided channel estimation,especially in the high speed mobile enviornment.

    在第三代移动通信WCDMA的最新通信标准[1] 中 ,下行信道在保留时分复用导频符号的同时 ,新增了公共导频信道 .本文针对WCDMA这一最新改变 ,给出了利用公共导频信道进行信道估计 ,实现相干RAKE接收的模型算法、性能分析及仿真结果 .仿真表明 ,利用公共导频信道的RAKE接收机性能明显优于时分插入导频符号辅助的RAKE接收机的性能 ,尤其在高速及变速运动情况下 ,而且具有信道估计算法简单、信道跟踪实时性强的特点 .

    Based on the anslysis of dual path channel model and linear channel estimation algorithm,a new simple but effective algorithm named circle trace channel estimation is presented.Based on OFDM system,the new algorithm is applied to different channel models.The simulation results show the efficiency and higher performance of the new algorithm.

    在分析双径信道模型及线性信道估计算法的基础上提出了一种新颖的简单而有效的圆轨迹信道估计算法 ,并基于OFDM系统在不同的信道模型中分别对两种信道估计算法进行了计算模拟和比较 ,证实了圆轨迹信道估计算法的有效性

     
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