In this paper, we investigate a new method for extracting useful information from the group delay spectrum of speech. The group delay spectrum is often poorly behaved and noisy. In the literature, various methods have been proposed to address this problem. However, to make the group delay a more tractable function, these methods have typically relied upon some modification of the underlying spe...

Abstract In this paper, a zero-delay channel estimation scheme based on both pilot and traffic channels is proposed for next generation direct sequence codedivision multiple-access (DS/CDMA) systems. This scheme has no channel estimation delay, and is found to perform significantly better than a zero-delay channel estimation scheme based on only pilot channel. The elimination of channel estimat...

| In an asynchronous direct-sequence code-division multiple access (DS-CDMA) communication system the parameter estimation problem, i.e., estimating the propagation delay, attenuation and phase shift of each users' transmitted signal, may be complicated by the so-called near-far problem. The near-far problem occurs when the amplitudes of the users' received signals are very dissimilar, as the c...

Evaluation of the adverse impacts of traffic incidents on a highway network is a critical issue for an incident management program. In this paper, we present a delay estimation method to estimate delays caused by traffic incidents using a recently developed queueing based approach. We validate this method by comparing its results with a simulation model.

This paper studies orthogonal frequency-division multiplexing (OFDM) system channel estimation problem in the interference environment and the channel delay estimation algorithm is proposed. The algorithm consists of the narrowband interference detection and suppression and channel time delay estimation. First of all, this paper studied the statistical characteristics of channel frequency domai...

Nonlinear dynamic processes with time-varying time delays can often be encountered in industry. Time-delay estimation for nonlinear dynamic systems with time-varying time delays is an important issue for system identification. In order to estimate the dynamics of a process, a dynamic neural network with an external recurrent structure is applied in the modeling procedure. In the case where a de...