• Multipath time delay estimation is constrained by the width of the signal correlation function when using correlation method.

    当采用相关法估计时间延迟时,多径时延的分辨率受到相关函数主(?)宽度的限制。

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  • Based on the idea of frequency domain subspace, a multipath delay estimating method for aperiodic spreading system is proposed.

    基于频域子空间思想,给出了一种适用于非周期扩频系统的多径时延估计方法。

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  • Multipath routing protocols can improve the robustness of routing, provide load balancing and perform better bandwidth and delay of data transmission.

    多径路由协议能够有效提高路由的健壮性、进行负载均衡,提高数据传输的带宽,降低数据传输延迟。

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  • We investigate the channel estimation algorithms based on tracking multipath time delay, a low complexity multipath time delay estimation method is proposed.

    论文研究了基于多径时延跟踪的信道估计方法,并提出了一种低复杂度的多径时延跟踪方法。

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  • The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.

    空地通信信道的主要统计特性包括多径衰落特性、多普勒功率谱和时延功率谱。

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  • To this end the current multipath estimation delay locked loop(MEDLL) was investigated and improvements were proposed based on the zero-point fixed principle.

    为了消除扩频系统中的多径干扰,文章基于稳态零点不变的原则对多径估计延迟锁相环(MEDLL)进行研究及改进。

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  • Based on the analysis of multipath delay, combine the experiment experience of foreign research with domestic practical circs, this paper brings up assumption of experiment.

    在对多径时间延迟分析的基础上,结合国外研究多径效应的实验经验和国内的实际条件,提出了研究多径效应实验的设想。

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  • This multipath time delay estimation approach based on adaptive parameters approach can be used to location targets in sonar and radar system.

    该时间延时估计方法可用于声纳及雷达系统的目标定位。

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  • Following, code tracking confirm the PN code phase precisely and track every multipath component's delay drifting due to Doppler effect.

    同步跟踪则由多径跟踪的结果精确估计PN序列码相位,并实时跟踪信道各径成分由于多普勒效应产生的时延漂移。

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  • Probability statistics for multipath delay of multi-frame was introduced to improve the performance of multipath estimation.

    引入多帧联合统计,以提高多径时延估计精度。

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  • In this paper, with Rayleigh fading the random characteristics of multipath time delay and Doppler shift in HF ionospheric channels is discussed.

    本文在瑞利衰落模型下,研究了高频电离层信道中多径时延与多普勒频移的随机特性。

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  • Channel delay estimation via pilot sub-carriers is used to provide accurate frame synchronization in multipath channels.

    利用有限的导频信号进行信道延迟估计从而获得准确的符号同步。

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  • Taking into account the noises correlated with signals, multipath time delay estimation based on adaptive parametric approach using third-order cumulants is proposed in this paper.

    在存在背景噪声干扰的情况下,本文提出了一种基于三阶累积量的自适应参数型多径时延估计方法。

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  • Accurate time delay estimation of overlapping fading multipath components is vital for many systems, particularly for positioning technologies.

    多径分量重叠衰落下的精确时延估计对很多系统而言都非常重要,对于定位技术更是如此。

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  • This paper introduces briefly the frequency response, damage parameter of two-ray multipath model and the relationship between multipath time delay, antenna height and communication distance.

    在微波视距通信中通常采用二径模型来描述信道,简要介绍了二径模型的频率响应、损伤参数以及多径时延与天线高度、通信距离的关系。

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  • In multipath propagation model, arrival Angle, delay and strength received by an antenna array for same signal source are estimated.

    利用天线阵列对同一信源信号经过多径传输到达终端的时间时延、角度和强度进行了联合估计。

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  • Then, based on the multipath model, this thesis analysed and researched the time delay algorithm based on the weigthed fractional lower order covariance and the weigthed non-linear transformation.

    其次,在多径时延的模型基础上,本文分析研究了加权分数低阶协方差时延估计方法和基于加权非线性变换的时延估计方法。

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  • Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.

    TTIB(透明带内导音)及FFSR(前馈信号再生)技术是一种可抗无线信道中多径时延及多谱勒频移引起的信号衰落的技术。

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  • Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.

    TTIB(透明带内导音)及FFSR(前馈信号再生)技术是一种可抗无线信道中多径时延及多谱勒频移引起的信号衰落的技术。

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