In this paper, a method is presented that employs portable cellular devices to perform three-dimensional localization of metallic objects from a set of time-delayed signals. These signals are observed by an array of receiving elements having arbitrary and a priori known distributions in space. Widely used solutions for direction finding are based on Time of Arrival (TOA) measurements. The measu...

*1 IMT-Advanced: A standard positioned as the successor to IMT-2000 at International Telecommunication Union Radiocommunication sector (ITU-R). It calls for data rates of about 100 Mbit/s for high mobility and 1 Gbit/s for low mobility. *2 ad hoc network: A network in which several mobile terminals communicate without any dedicated infrastructures such as base stations or access points. *3 UWB:...

Several power control methods in cellular radio systems are reviewed. An adaptive power control scheme based on the adaptive optimization of transmitter power and receiver filter coefficients is analyzed. We implement the power control algorithm, adaptive RAKE receiver and analog RF power amplifier in HP Advanced Design System. We perform the co-simulation in HP Advanced Design System to prove ...

In recent years there have been rapid advances in the techniques to generate and transport radio signals over optical fibre, however very little has been done to date to develop the concept of a full duplex, multi-wavelength, radio -over-fibre network architecture that intrinsically supports and facilitates the dynamic reconfiguration of the wireless network. Recently the development of suitabl...

As the cellular industry has evolved from first-generation to third-generation cellular systems, system architects have refined the role of nodes in the network. In hindsight, one can say that the architects of firstgeneration cellular systems, such as AMPS and NMT, had quite modest expectations regarding the scope of future traffic volumes. Accordingly, a simple architecture could meet these m...

The proliferation of sophisticated applications and services comes with diverse performance requirements. 5G cellular network is advocated to support this diversity through an end-to-end slicing. Even-though the slicing not a novel concept, its implementation in RAN still remains challenging. In article, we aim enforce real time from radio resources perspective multi-cell system. For that, exac...

This work describes a novel tool, called ICPT (inversion-based coverage prediction tool), for predicting coverage field strength in outdoor cellular network by means of the inversion method. Instead of using the highprecision geometric modeling of wireless environments, the problem of radio propagation prediction is solved by using an inversion of the measured data (under all priori constraints...

In this paper a framework is presented based on 4G Cognitive Radio (CR) network capable of communicating with high numbers of geographically dispersed smart meters for command and control feature concurrently with private cellular network. Our approach uses pervasive smart grid systems (i.e. cloud data centers) as the central communication and optimization infrastructure supporting metropolitan...

We briefly explain the concept of cyclic delay diversity (CDD) as a variant of standard conformable delay diversity techniques. Usually being implemented at the transmitter side of an OFDM based system, the application of CDD is recognized at the receiver side only by observing modified channel propagation conditions. Therefore, we analyze the effect of CDD on the channel fading properties obse...

Transmitter diversity at the base station of a cellular mobile radio system provides a means to achieve performance gains similar to those obtained with mobilestation receiver diversity, but without the complexity of a mobile-station receiver antenna array. We investigate Selective Transmit Diversity (STD) in the downlink of the Wideband Code Division Multiple Access (WCDMA) mobile radio channe...