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Track-before-detect (TBD) is effective on weak target detection in passive bistatic radar (PBR). The probability of false alarm (PFA) and the probability of detection (PD) in TBD based on dynamic programming algorithm (DPA) are determined by threshold. The extreme value theory and generalized Pareto distribution are usually used to obtain the relationship between PD, PFA and threshold. However, DPA...
The paper aims to review and deepen the effects of the modal density in the dynamical identification with the Complex Plane Representation (CPR) method that is based on the Hilbert transform of the motion response of mechanical systems. It is demonstrated that the strong accuracy in the identification of the modal parameters with the CPR method can be somewhat corrupted for high modal densities. Theoretical...
One of the main goals of process mining is to automatically discover meaningful process models from event logs. Since these logs are the essential source of information for discovery algorithms, their quality is of high importance. In recent years, many studies on the quality of resulting process models have been conducted. However, the analysis of event log quality prior to the generation of models...
The design of efficient receivers for orthogonal frequency division multiplexing I space division multiple access (OFDM/SDMA) channels remain a challenging task especially when the number of mobile stations (MSs) transmitting exceed base station (BS) antennas. The benchmark performance is achieved by Maximum Likelihood (ML) detector at the cost of computational complexity that exponentially increases...
It is very difficult to get absolutely accurate estimation models for practical filtering and target tracking systems. Accordingly, adaptive filtering technology has been presented to deal with state estimation with inaccurate models and some typical adaptive methods have been established. These adaptive methods have also used to design various filtering or fusion algorithms most of which have applied...
We propose computationally efficient MIMO detection scheme which can provide accurate soft decision information to the decoder. The detection process has two stages. The proposed scheme first detects MIMO symbols using MMSE method, and calculates noise variances of each detected symbol. Next, the detected symbols are demodulated in bits by maximum likelihood method respectively. The proposed scheme...
The paper presents a computational procedure of a multichannel Fast Affine Projection algorithm. The procedure also includes Sliding Window linear prediction, Gradient Adaptive Step-Size and fast computation of adaptive filter output signal. An example of the algorithm application in a combined Feed-Forward and Feed Backward Active Noise Control system, which can be viewed as a two-channel adaptive...
This paper addresses the problem that how to estimate the channel practically for the large-scale multiple antenna systems. Based on the uniform linear array, we reformulate the signal model for channel estimation into a transform-domain (TD) representation. Then the TD filtering schemes are investigated. In particular, we propose a sequence-based filtering scheme, which is asymptotically optimal...
This study assesses the complexity of heart period (HP) and QT variability series through sample entropy (SampEn) in long QT syndrome type 1 individuals. In order to improve signal-to-noise ratio SampEn was evaluated over the original series (SampEn0) and over the residual computed by subtracting the first oscillatory mode identified by empirical mode decomposition (SampEnEMD1R). HP and QT interval...
Relaxed synchronization is considered essential for future generations of wireless networks in order to reduce signaling overhead. Filterbank Multicarrier (FBMC) modulation receivers may be implemented in the frequency domain as synchronization and equalization may be performed jointly. Furthermore it is demonstrated that FBMC exhibits better capacity than OFDM when frequency division multiple access...
In the LTE, OFDM is the multicarrier technology used for the downlink data transmission of the multicarrier signal. OFDM (orthogonal frequency division multiplexing) the main well known drawback is peak average power ratio (PAPR). Due to the increase in the PAPR the power amplifier of the transmission must be operated in high back-off region in order to be in the linear region. The system efficiency...
This paper studies fundamentals of classical, classical-quantum and quantum information technologies to advance sensing, data acquisition and computing. The overall goal is to define, analyze and evaluate classical and quantum-mechanical information measures pertained to data processing by low-power nanoelectronic devices, nanoICs, nano-waveguides, CMOS nanophotonics, etc. Electronic, optoelectronic...
A number of data-driven fuzzy measure (FM) learning techniques have been put forth for the fuzzy integral (FI). Examples include quadratic programming, Gibbs sampling, gradient descent, reward and punishment and evolutionary optimization. However, most approaches focus solely on the minimization of the sum of squared error (SSE). Limited attention has been placed on characterizing and subsequently...
A simplified version of a recently developed structure is derived for all-pass filters. The proposed structure possesses 4N non-trivial multipliers and 2N adders used for computing one output sample of an Nth order all-pass filter. It is shown that such a structure yields a roundoff noise gain of 4N, compared with that of (N +1)2 for the classical minimum roundoff noise realizations that have in general...
This paper proposes a new visual object tracking algorithm using a novel Bayesian Kalman filter (BKF) with simplified Gaussian mixture (BKF-SGM). The new BKF-SGM employs a GM representation of the state and noise densities and a novel direct density simplifying algorithm for avoiding the exponential complexity growth of conventional KFs using GM. Together with an improved mean shift (MS) algorithm,...
Depth-image-based rendering (DIBR) technique is widely used to synthesize virtual views in many applications including multiview and free viewpoint video systems. An inherent problem of DIBR oriented view synthesis is that holes may appear in the synthesized view. Hole filling techniques generally extrapolates/interpolates the hole regions with the neighboring information based on an assumption that...
As CMOS devices scaling down according to the Moore' law, the reliability and stability of circuit become the main challenge for the chip designs in low supply voltage. Markov Random field (MRF) based design methodology presents a new approach to establish high noise-immune structure for low-power circuit design from the viewpoint of energy. We use global mapping to synthesize all two-input functions...
Successive interference cancellation (SIC) has been extensively applied to estimate transmit signals in communication systems. When the channel state information (CSI) and noise statistics are imperfectly estimated, the standard SIC estimators that ignore the model mismatch may perform poorly. This paper introduces regularized SIC estimation to provide robustness against the model mismatch. Suboptimal,...
Random projection is a tried-and-true technique in signal processing for reducing sensing complexity while maintaining acceptable performance of downstream processing tasks. In this paper, we investigate random linear projection of point clouds followed by topo-logical data analysis for computing persistence diagrams and Betti numbers. In this first empirical study of its kind in the literature, we...
The market trends towards the use of smaller dish antennas for TV satellite receivers, as well as the growing density of broadcasting satellites in orbit require the application of robust adjacent satellite interference (ASI) cancellation algorithms at the receivers. The wider beamwidth of a small size dish and the growing number of satellites in orbit impose an overloaded scenario, i.e., a scenario...
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