• Introduce the Wiener filter algorithm base on MMSE, and time domain channel estimation algorithms.

    介绍了基于MMSE维纳滤波算法,变换域信道估计算法,以及判决反馈信道估计算法。

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  • On the base of analysis of power line channel and OFDM system, research is focused on the channel estimation algorithm.

    在对电力线和OFDM系统分析的基础上,重点研究了信道估计算法。

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  • A channel estimation algorithm is proposed for OFDM wireless communication system under time-varying multipath channel.

    提出了一种OFDM系统在时变多径信道中的信道估计算法。

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  • The carrier frequency offset estimation algorithm and channel estimation algorithm are studied and implemented in this paper.

    本文对自组织网物理层的载频估计算法和信道估计算法进行了研究和实现。

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  • Modified MIMO channel estimation algorithm based on superimposed training sequence was proposed for the frequency selective channel.

    针对提高无线信道的传输性能,提出了改进的基于叠加训练序列的MIMO信道估计算法。

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  • A non blind channel estimation algorithm for orthogonal frequency division multiplexing (OFDM) systems in multipath channels was proposed.

    提出了一种适用于正交频分复用通信系统的非盲信道估计算法。

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  • On the basis of the features of the Fast Fourier Transform (FFT) and digitally modulated signals, this paper proposes a blind channel estimation algorithm.

    根据快速傅里叶变换(FFT)和数字信号调制解调的特点,给出了一种盲信道质量估计算法。

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  • In chapter five, performances of the channel estimation algorithm mentioned before is compared, and the advantages and disadvantages of these algorithms are analyzed.

    第五章:比较前述的几种主要的信道估计算法的性能,分析这些算法的主要特点。

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  • We use a modified subspace tracking channel estimation algorithm and simulate the system BER performance under different channel estimation approaches and combining methods.

    文中使用了改进的子空间跟踪信道估计算法,并仿真了不同信道估计方法、合并方法下系统的误比特率性能。

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  • Based on the detailed analysis of the channel impulse response (CIR) leakage in the practical OFDM systems, a sub-optimal time domain channel estimation algorithm is proposed.

    基于对实际系统中信道冲激响应(CIR)泄漏问题的详细分析,提出了一种次优的时域信道估计算法。

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  • In Chapter Four, the common OFDM channel Estimation algorithm, including LS and MMSE method is studied and its corresponding performance is simulated and analyzed in UWB channel.

    第四章主要研究了OFDM系统常见的信道估计方法,包括LS、MMSE等算法,并且在UWB信道条件下进行了相应的性能仿真和分析。

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  • Finally, an improved channel estimation algorithm based on LS algorithm is presented. Considering the infection of the noise, the new algorithm has better performance under low SNR.

    最后作者提出一种改进型LS信道估计算法,该算法考虑了LS算法中噪声的影响,从而提高了低信噪比下信道估计的精度。

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  • The channel estimation algorithm based on training-sequence method firstly introduces the definition of the training sequence and discusses the optimum training-sequence in MIMO-OFDM system.

    根据最优化训练序列的设计方法分别讨论了两种最优化训练序列的导频格式:对角正交导频和相移正交导频,分析了在两种不同导频格式下的信道估计算法。

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  • Especially in the transmitting antenna correlated parameter unknown circumstances, an innovational channel estimation algorithm which takes use of the long & shot training sequence is proposed.

    尤其在发射天线相关参数未知情况下,本文创新性地提出了一种利用长训练序列和短训练序列进行联合信道估计的算法。

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  • The frame structure in Chinese DTTB standard is introduced, and a channel estimation algorithm with a better performance is given according to the cycle characteristics of the signal frame head.

    分析了中国数字电视地面广播标准中的系统帧结构,并根据信号帧头的循环特性,提出了一种性能较好的信道估计算法;

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  • The result shows that, compared with the existing channel estimation algorithms for OFDM system under time-vary multipath channel, the proposed algorithm can effectively reduce estimation errors.

    分析结果表明,与已有的OFDM系统在时变多径信道中的信道估计技术相比,所建议的算法可以有效地减小信道估计的误差。

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  • To reduce this error, a recursive channel estimation algorithm was proposed to compensate the channel estimation of data field to increase the precision of the channel estimation of single timeslot.

    为了降低这种误差,提出了循环迭代的算法,通过对数据域信道估计进行补偿,提高了单个时隙信道估计精度。

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  • This algorithm combines the block Pilot-aided LS channel estimation algorithm with a phase tracking algorithm, which can compensate the phase rotation caused by the residual carrier frequency offset.

    该算法在传统的基于块状导频的Ls信道估计算法的基础上,加入了相位跟踪算法,补偿了由残余频偏带来的相位旋转。

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  • The space-time channel estimation and multiuser detection algorithm for the uplink of multicarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel were investigated.

    研究了频率选择性瑞利衰落信道中的同步MC-CDMA系统上行链路空时信道估计及多用户检测算法。

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  • As a necessary input parameter for MAP decoding algorithm, SNR was normally obtained from the channel estimation unit.

    作为MAP译码算法的必要参数,信噪比通常通过信道估计单元得到。

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  • Echo channel estimation and the tracking of channel using the transform domain LMS algorithm are introduced in this article.

    提出了对回波信道的初估计并利用变换域LMS算法进行信道跟踪的一种方案。

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  • To improve the algorithm convergence, EM-based joint channel parameters estimation and data detection algorithm is proposed.

    为进一步提高算法的收敛速度,提出联合信道参数估计和数据检测算法。

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  • In this paper a fast algorithm for channel estimation in downlink TD-SCDMA systems has been proposed by analyzing the discrete-time base-band transmission model.

    本文在分析TD _SCDMA系统下行链路基带离散时间传输模型的基础上,提出了一种下行链路信道估计的快速算法,并结合终端联合检测算法进行了计算机仿真。

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  • In this paper, channel estimation and FDE algorithm in the SC-FDE system are mainly studied.

    本文重点对单载波频域均衡(SC -FDE)传输方案中的信道估计和频域均衡算法进行了研究。

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  • An improved algorithm is proposed based on the conventional channel blind estimation algorithm which USES the auto - correlation matrix of the vector of received signal in the OFDM systems.

    本文针对传统的OFDM系统中利用接收信号的自相关进行信道盲估计算法提出了一种改进算法。

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  • The optimal estimation algorithm of measurement noise and the optimal state fusion algorithm for multi-channel system with multiplicative noises are mainly researched in this dissertation.

    本文主要针对多通道带乘性噪声系统的观测噪声最优估计算法和状态最优融合估计算法展开进一步研究。

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  • Simulation results show that subcarrier grouping just has a little influence on system performance. Meanwhile the imperfect channel estimation has little effects on the present algorithm.

    模拟结果表明引入子载波分组后系统性能依然保持良好,并且信道估计偏差对本算法的影响较小。

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  • For integer frequency offset estimation, we analyze a sequence auto-correlation based algorithm, and extend the algorithm into frequency selective channel case.

    对于整数频偏估计,分析了一种基于序列自相关的算法,并将该算法推广应用到频率选择性信道中;

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  • For integer frequency offset estimation, we analyze a sequence auto-correlation based algorithm, and extend the algorithm into frequency selective channel case.

    对于整数频偏估计,分析了一种基于序列自相关的算法,并将该算法推广应用到频率选择性信道中;

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