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Target tracking in a network of wireless cameras may fail if data are captured or exchanged asynchronously. Unlike traditional sensor networks, video processing may generate significant delays that also vary from camera to camera. Moreover, the continuous and rapid change of the dynamics of the consensus variable (the target state) makes tracking even more challenging under these conditions. To address...
We report an investigation on the statistics of group delay for few-mode fibres operating in the weak and strong linear coupling regimes as well as in the intermediate coupling regime. A single expression linking the standard deviation of the group delay spread to the fibre linear mode coupling is validated for any coupling regime, considering up to six linearly polarized guided modes. Furthermore,...
We study the probability density function of the group-delay in few-mode fibres, validating for the first time an analytical estimation for the maximum group-delay spread as a function of linear mode coupling for fibres with more than three LP modes.
SNR estimation of LFM signal detection is often applied in radar, mobile communications, Radiolocation and seismic exploration with vibrator. The common method of LFM signal detection is correlation, which can not only be used to explain time delay in Multipath Propagation, but also to estimate SNR in detection of output signal. The records of signal plus noise before the signal detection are called...
Advancements in nano-scale Integrated Circuits manufacturing technology has resulted in variability of performance metrics. The performance parameters such as Power and Delay are no longer represented deterministically. As a result, circuit designers and manufacturers need to make use of statistical analysis to estimate performance of Integrated Circuits. In this paper we present a new methodology...
A novel time delay estimation (TDE) method is proposed based on the concept of mutual information (MI). The relative delay between two sensor output signals is estimated by maximizing the estimated MI of the two signals. In estimating the MI, it does not require any information about prior distribution of the source signal. Instead, the Parzen window estimator is used to estimate the density function...
The Smith predictor is a well-known method for designing controllers for plants with I/O delays. Assuming the time delay known, this control configuration compensates the delay within the loop making it possible to design the controller just considering the (rational) delay-free part of the plant. Since the original Smith predictor does not allow to deal with unstable plants, intensive research has...
The mobile position estimation using time-of-arrival (ToA) is considered for the wireless NLoS geolocation exploring a signal strength(SS) based on path loss. As exploited the path attenuation, a hybrid SS-ToA approach indicates a performance improvement compared with the usual ToA method. To realize this prospect, it calls for an estimator to determine the mobile position from the time delay. In...
This paper discusses the phase lag of tele-operation system when operator begins to perceive the system's motion lag. The reduction of time lag is very important for high operation performance in tele-operation system. However the threshold of time lag for development of high operability is unknown. Therefore, I obtain the time lag when the operator perceived the motion lag in tele-operation. The...
The true Cramer-Rao bound (CRB) for the variance of unbiased, data-aided symbol-timing estimate has been obtained from linearly modulated waveforms through an additive white Gaussian noise channel with random carrier phase already. However, in practice, it is unusual to perform carrier synchronization prior to timing recovery. In this paper, we deduce the true CRB for data-aided time delay and frequency...
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