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.
Low voltage, in-home power-line communications (PLC) networks allow direct communication between smart meters (SM) and in-home devices (IHD). In order to minimize security issues, in many deployment scenarios transmission takes place only towards the IHD to display consumption data, with no backwards channel. As a result, channel estimation is difficult and it is necessary to use robust transmission...
Internet of Things (IoT) is a topic of growing interest and intensive research in industry, technological centers and academy, where data communication is one of its most relevant aspects. Since IoT is an open field for new applications, it does not have yet a standard communication protocol. This paper presents the system level design of a WiFi receiver supporting the novel low power standard IEEE...
Non-malleable commitments, introduced by Dolev, Dwork and Naor (STOC 1991), are a fundamental cryptographic primitive, and their round complexity has been a subject of great interest. And yet, the goal of achieving non-malleable commitments with only one or two rounds} has been elusive. Pass (TCC 2013) captured this difficulty by proving important impossibility results regarding two-round non-malleable...
Line impedance stabilization network (LISN) is an important tool to provide noiseless power supply in electromagnetic compatibility (EMC) testing. There are several brands of LISN that are recognized in the market. However, the quality of measurement provided by the LISN is not dependent upon the quality of the product, but also its application scheme. This paper investigates the effect of grounding...
ZigBee is a widely used wireless technology in low-power and short-range scenarios such as Internet of Things (IoT), sensor networks, and industrial wireless networks. However, the standard ZigBee supports only one data rate, 250Kbps, which thoroughly limits ZigBee's efficiency in dynamic wireless channels. In this paper, we propose Mrs.Z, a novel physical layer design to enable multi-rate selection...
Due to the interrelation of different stages within the handset receiver, it is often desired to have clear requirements for the RF receiver front-end. However, the LTE standard specifies only the system-level performance, and extracting the receiver's front-end requirements is not straightforward given the complexity of current standards. These front-end requirements are important to make the right...
The digitalization of modern television broadcasts makes it possible to provide interactive content to consumers over the air. But the hitherto unsecured nature of such broadcasts combined with the ever-increasing complexity of Smart TV software have created an opportunity for attackers to strike at consumers. DVB has updated the relevant standard to allow broadcasters to secure their services against...
We considered the range of PPP online services that solve the problem of high-precision coordinates and receiver time scale shift determination for the RINEX daily records. The comparative estimation of exact indicators of position determination for different geoids is given. The results contains the recommendations for use the online PPP services to solve the problem of time scales comparison.
This work presents a 180-nm CMOS bandpass ΣΔ Analog-to-Digital Converter (ADC) developed to fulfill the specifications of a fully-integrated receiver for Magnetic Resonance Imaging (MRI). CMOS integration of a multichannel digital receiver would increase the quality of the image without the need of using many coaxial cables to connect the RF coils (located close to the patient) with the digitizing...
An ongoing commitment to reducing undesired physical phenomena, typical of radiated emission tests at frequencies lower than 30 MHz, has led to several revisions of the standards and to different approaches for civil, military and aeronautical applications and devices with internal combustion engines. This made it impossible to compare results from different sectors and across different versions of...
The long-distance ultraviolet communication has to take the influence of atmosphere turbulence into consideration. This paper proposed a new turbulent channel combined with single scattering model for ultraviolet communication, where the variation of refractive-index structure parameter is introduced. The calculating results of new model is closer to the experimental results compared to that of the...
Among the filter bank multicarrier techniques for efficient transmission in communication systems, the recently proposed FBMC-PAM transceiver exhibits many advantages in comparison with the OFDM system; in particular, it does not require a cyclic prefix and, in the asynchronous multi-user context, it provides a high level of spectral separation among users. However, a performance loss is encountered...
This paper introduces the design of a near realtime BDS/GPS time transfer method. A Beidou data communication module is assembled into a time transfer receiver. The clock difference computation procedure is modified and a customized protocol is designed for comparison data exchange. The time difference of zero-baseline common-clock by GPS and BDS is compared. The performance of this method is almost...
A new digital modulation technique, named Sigma Shift Keying (SSK), is introduced with minimal transmitter power output (TPO) and very low probability of intercept (POI). Standard deviations (or variances, respectively) of zero mean Gaussian noise signals are being digitally modulated instead of shift keying of sinusoidal carrier signals. Following a theoretical analysis of achievable bit error rate...
High quality of the provided communication services can be reached by package networks by the organization of network synchronization of the time scales (TS). The report summarizes the experience of comparing the TS of the leading watches of the corporate telecommunication network with the state time scale - UTC (SU). The methods of realization of checking of a time scale and methods of distribution...
We use a system level simulation to study the transmission penalty for extended SR4 systems with 300 m OM3 MMF under two types of launch conditions and we show an impact of the fiber bandwidth on the equalized 25.78 Gbps VCSEL-based NRZ link at 850 nm.
Communication security is one of the most significant issues to draw people's attention in vehicular ad-hoc networks (VANETs). To prevent from malicious nodes and ensure the confidence and integrity of the messages, vehicles have to authenticate each other and support message signature and encryption. As the most prospective approaches, though the generally accepted wireless access for vehicular environment...
Ultra-wide band (UWB) communication is a viable solution for Wireless Sensor Network (WSN) and Internet of Things (IoT) due to low cost and low power requirement. However, UWB transceiver design is more complex due to large bandwidth and precise synchronization requirement. In this paper, we propose a simple peak detection based non-coherent UWB receiver, suitable for low data rate WSN and IoT based...
Today's data centers networks are commonly featured with the richness paths. This aim to improve the network performance with multipath connections and increases reliable system connection for the cables get cut, the failures of switches or routers. However, the common problem of multipath connection is suffered from the difference path conditions in term of speed and delay. In this paper based on...
The Authorities that are responsible for the design and management of infrastructures have an increasing need of information and support in order to optimize their work, save money, time, and, sometimes (e.g., in case of disastrous events), lives. Technological development is leading to new possibilities, in terms of new technologies increasingly available, widespread, reliable and inexpensive and...
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.