The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Coordinated multi-points (CoMP) transmission has been widely proved to be effective to combat inter-cell interference in 3GPP LTE-Advanced systems. However, implementation complexity of inter-site CoMP and relatively low capacity gain of intra-site CoMP motivate us propose a beam coordinated multipoints (Beam-CoMP) transmission scheme for 5G millimeter-wave cellular network. Considering the specific...
The speed of the target can be estimated by the sound pressure cross-correlation of the line spectrum of the moving target at different time intervals. However, a slight deviation of the line spectrum has a significant influence on the estimated result. In this paper this phenomenon is analyzed from the theory, then the speed of the target is estimated when the line spectrum is biased. Experimental...
In fractional Fourier domain (FrFD) hopping communication, a chirp signal distinguishes others only when their center frequency and/or frequency rate difference is significant, which is not easy to realize in the band-limited underwater acoustic (UWA) channels. Hence suppressing nonoptimal order chirps in FrFD is required to facilitate the detection of UWA FrFD hopping (FrFDH) communication. In the...
Reverberation is the main interference in active sonar detection, due to its special properties, reverberation suppression is a difficult problem in active sonar signal processing. In this paper, the method of reverberation suppression is studied, and a new method based on the normalization of the beam space data is proposed. The basic idea of this method is to normalize the time waveform of the beam...
Because of the effect of the space local scattering, when two non-coherent desired signals are incident in the mainlobe of the beampattern at the same time, the beampattern of the conventional adaptive beamformer can form a null in one of the desired signal directions, which will further destroy the integrity of the mainlobe and lead the output signal-to-interference-plus-noise ratio (SINR) to drop...
WLANs are susceptible to interference and not suitable for transmission of the integrated services of urban rail guided transportation. With the rapid deployment of 4G, it is highly concerned if the LTE can be used for urban rail transit. In this paper, we present the latest field test we made on the performance of Time Division Long Term Evolution(TD-LTE) to transmit the integrated services of urban...
While metric learning is important for Person reidentification (RE-ID), a significant problem in visual surveillance for cross-view pedestrian matching, existing metric models for RE-ID are mostly based on supervised learning that requires quantities of labeled samples in all pairs of camera views for training. However, this limits their scalabilities to realistic applications, in which a large amount...
A major drawback of orthogonal frequency division multiplexing (OFDM) is the frequency offset sensitivity. It mainly leads to inter-carrier interference, which can effectively be reduced by employing the pulse shaping filter method. In this manuscript, we present and then optimize the improved double-jump 1 (IDJ1) pulse for digital video broadcasting over cable 2 OFDM systems. Our function is finally...
This paper propose a method of suppressing inter-user interference in the in-band full duplex communication. In this method, an interference compress technique is used for eliminating the interference at the receiving terminal. Also, we evaluated the achievable transmission rate of the proposed method by using channel state information (CSI) measured by the outdoor field experiment.
In this paper, the power line interference removal in electrocardiogram (ECG) measurement signal is studied. First the FIR notch filter design based on Bernstein polynomial approximation is presented. The design method is simple and has an analytic solution. Then, a design example is illustrated to show the designed notch filter has exactly zero gain at notch frequency. Finally, an experiment of the...
One of the challenges in designing dual communication and radar systems employing multi-carrier waveforms is addressing the separate radar and communication objectives. This challenge becomes more difficult when one considers that such a system would be the target of malicious attacks, especially those involving interference. In this paper, to gain insight into the problem, a game-theoretical model...
Security threats such as jamming and route manipulation can have significant consequences on the performance of modern wireless networks. To increase the efficacy and stealthiness of such threats, a number of extremely challenging, next-generation cross-layer attacks have been recently unveiled. Although existing research has thoroughly addressed many single-layer attacks, the problem of detecting...
This paper investigates the nonlinear dynamical features such as the bifurcation route of chaos and fractional structure in Superconducting Quantum Interference Device (SQUID). The dynamical equation of a superconducting quantum interference device composed of two Josephson junctions and a bias current source is derived, based on which we plot the bifurcation diagram and power spectral diagram of...
In this paper, we propose PreDA-a preferencebased truthful double auction for dynamic spectrum access (DSA) networks where multiple heterogeneous spectrum bands are sold by the primary users and bought by the secondary users. We consider channels' heterogeneity and multi-bids from buyers, and also consider buyers' preferences for the channels. We use the signal to interference and noise ratio (SINR)...
Since radio links in wireless body area networks (WBANs) commonly experience highly time-varying attenuation due to topology instability, communication protocols with fixed transmission power cannot produce a very good performance in terms of energy consumption, interference range, and communication reliability. We explain that how channel behaviourcan be modelled using Markov Chain. Then, a power-adaptive...
The working environment of large electromechanical equipment is complex, the probability of failure is higher, in order to improve the ability of fault diagnosis of electromechanical equipment, the need for anti interference filtering processing for fault signal, so as to ensure the stable operation of electromechanical equipment systems, this paper presents a fault signal spectrum analysis and adaptive...
To be able to efficiently utilize high data rates of 100 Gbit/s and beyond, protocols must be carefully selected for specific communication parameters. At the same time, communication parameters, such as data rate/latency requirements and the channel quality, are not static. This contradiction can be solved by switching to the best suited protocol when communicationparameters change. However, replacing...
Investigations on antenna array for 5.8 GHz frequency band applications are presented in this paper. In order to enhance the characteristics of the dielectric resonator antenna elements, a pair of resonators with different sizes and dielectric constants is used. The antenna elements are connected to four daughter-boards of Universal Software Radio Peripherals, which perform the signal processing required...
Due to the ubiquitous presence of cellular networks and their exemplary success, they have been pushed forward to provide connectivity for Internet-of-things (IoT) applications with mass deployments of sensors and machines. Nevertheless, existing transmission protocols, e.g., orthogonal allocation or spectrum sharing, can be detrimental for both existing cellular users and IoT devices due to increased...
In this paper, we propose a novel mixed-signal cancellation circuit for LTE carrier aggregation receivers targeting modulated spur interference. This circuit senses interference via an auxiliary analog path, and generates a reference signal for the adaptive digital cancellation. To evaluate the performance of the proposed technique, a demonstrator, realized in 28 nm LP CMOS, is shown with a cancellation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.