multipath delay
英 [ˌmʌltɪˈpɑːθ dɪˈleɪ]
美 [ˌmʌltiˈpæθ dɪˈleɪ]
重复信号延迟
双语例句
- 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。 - 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。 - Multipath Time delay estimation
同步辐射时间分辨荧光光谱技术多途时延估计 - Distribution of Multipath Time Delay and Doppler Shift for HF Communication on Ionospheric Channels
高频电离层通信中多径时延与多普勒频移分布 - To further improve the estimation performance, the multipath delay was estimated by FFT, and then a more accurate channel response signal space was obtained, so the performance of subspace projecting was also improved.
为进一步提高性能，最后提出了一种基于FFT的多径时延估计方法，使用该方法可以得到更精确的信道响应信号子空间，从而提高投影估计的性能。 - Reasoning more than one multipath delay formulas simulate them repeated calculation contrast the numerical value, gained two modified mathematic models which are more approach the experiment result.
对已有的多径时间延迟模型进行仿真分析，重新推导、反复计算、多个公式对比，得到了两个跟实验结果更加接近的修正数学模型。 - The precision of multipath time delay estimation using auto correlation is analysed and compared to the performance of the maximum likelihood estimator ( MLE).
讨论自相关多途时延估计方法.分析了自相关多途时延估计方法的估计精度，并将其与MLE估计器进行了比较； - A New Algorithm for Multipath Time Delay Estimation of Unknown Signal
未知波形信号的多径时延估计新方法 - 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。 - Multipath Time Delay Estimation Based Adaptive Parameters Approach
自适应参数型多径时延估计方法的研究 - 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。 - 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。 - Experimental Study on Multipath Delay Spread in Building
室内多径时延扩展的实验研究 - Study on Multipath Time Delay Estimation Algorithms under Alpha-stable Noises
Alpha稳定分布噪声下多径时间延迟估计算法研究 - The formula of the error bit rate of the system is proved when the multipath delay is less than half of the signal period.
论证结果表明，FM-DCSK系统对于延迟小于码元周期一半的多径干扰能很好的抑制，并推导了多径延迟小于码元周期一半的多径信道下该系统接收端的误码率公式。 - High Resolution Method for Underwater Multipath Time Delay Estimation
水声信道多径时延估计的高分辨方法研究 - Timing and Multipath Delay Estimation for a MIMO-OFDM System
MIMO-OFDM系统定时与多径时延估计 - Because the scheme of space-time block decoding is correlated with channel parameters, channel estimation with multipath delay is also discussed, and the deterioration of the BER ( Bit Error Ratio), caused by the tolerance of channel estimation deviation, is analyzed as well.
由于空时分组码译码与信道估计紧密相关，本文亦讨论了多径信道估计以及信道估计误差对本方法的影响。 - Multipath Delay Estimation in Frequency Domain for Aperiodic Spreading Systems
非周期扩频系统中频率域多径时延估计 - 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。 - Design of robust controller for disturbance systems with multipath delay
具有扰动的多时滞线性系统的鲁棒控制器 - Simulation results for MIMO-OFDM ( Multiple Input Multiple Output OFDM) systems demonstrate that the proposed method can track the multipath time delay information more quickly.
针对MIMO-OFDM（MultipleInputMultipleOutputOFDM）系统的仿真结果表明：在多天线系统中，此方法可以在更短的时间内捕获到比较准确的多径时延信息。 - 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。 - Due to the multipath effect, multipath delay, multipath fading and some other reasons, the mobile communication has the characteristics that its bandwidth is undulate and high bit error rate, so some continuous and gusty error of transmission usually appears.
由于多径、衰落、时延扩展、噪声影响和信道干扰等原因，无线移动通信不仅具有带宽波动的特点，而且信道误码率高，经常会出现连续的、突发性的传输错误。 - Firstly, we introduce the characteristic of UWB signal and channel propagation model, and analyze the path loss, multipath delay and other effects on ranging accuracy which provide the mathematical model for the discussion of TOA estimation in the following chapters.
首先，从超宽带特有的信号及信道传播特性入手分析了路径损耗、多径延时等对测距精度的影响，并为后续的TOA估计方法研究提供了数学模型。 - This paper analysis wireless channel model and the channel parameters based on the wireless communication propagation characteristics, especially analysis the physical characteristics of small-scale fading channel and the mathematical models of multipath propagation, Doppler frequency shift and multipath delay.
本文首先根据无线传播的特性分析了无线传播模型和信道描述的参数，重点分析了对小尺度衰落信道的物理特性以及小尺度衰落信道中的多径传播、多普勒频移以及多径延时的数学模型。 - In wireless communications, when the symbol period is smaller than the signal multipath delay spread, in the other words, when a frequency selective fading channel is existed, the received signal will suffer a serious inter-symbol interference ( ISI).
无线通信中，当符号周期小于信道的多径时延扩展，即出现信道的频率选择性衰落时，接收信号会受到严重的码间干扰（ISI）。 - On the basis of maximum likelihood estimate of the multipath time delay, the multipath time delay EM estimation algorithm is studied.
在对多径时延最大似然估计的研究基础上，分析研究了基于EM算法结构的多径时延参数估计问题。 - But in the case of long multipath spread, the guard interval must be longer than multipath delay, resulting in significant reduction in the transmission efficiency of OFDM.
但是在信道时延扩展超长的水声信道中，由于保护间隔必须大于多径时延，因此OFDM的传输效率显著降低。 - The first arriving path can be effectively estimated by detecting the maximum value of the gradient of the correlation value, when the correlation length exceeds the largest multipath delay.
研究表明，当相关窗长度大于信道最大多径迟延时，采用检测相关值斜率最大值的方法理论上能够有效地估计出接收端第一径的位置。