This paper presents an overview of preliminary results of investigations within the WHERE2 Project [1] on identifying promising avenues for location aided enhancements to wireless communication systems. The wide ranging contributions are organized according to the following targeted systems: cellular networks, mobile ad hoc networks (MANETs) and cognitive radio. Location based approaches are fo...

As the name suggests, wireless systems operate by transmission through space rather than through wired connection. There are two major problems to be addressed in a wireless setting that do not arise in the wired case. The first is that the channel over which communication takes place is time varying. The second being interference between multiple users using a common communication medium. Ther...

This paper proposes a novel Adaptive Stochastic Radio Access Selection (ASRAS) scheme for mobile users in heterogeneous Cellular-WLAN systems. In this scheme, a mobile user located in dual coverage area randomly selects WLAN with probability of ω when there is a need for downloading a chunk of data. The value of ω is optimised according to the status of both networks in terms of network load an...

Power controlled RRC (Radio Resource Control) is becoming the most attractive paradigm to provide efficient and flexible access for future wireless communications, both in public cellular systems and in local area ones. We aim at investigating how the design of an interferencecontrolled RRC protocol leads to an efficient support of traffic requiring Quality of Service (QoS). This work has been ...

he demand for cost-efficient provision of mobile multimedia services is faced with the reality of scarce radio resources. The requirement of spectrum efficiency has driven the development of various digital radio technologies — digital audio broadcasting (DAB), digital video broadcasting (DVB), Global System for Mobile Communications (GSM), General Packet Radio System (GPRS), Universal Mobile T...

Radio Frequency (RF) interference is inherent in all wireless systems and is one of the most significant design parameters of cellular and other mobile systems. In this paper, it is shown that how a non-linear adaptive Volterra filter (Polynomial filter where input and output signals are related through Volterra series) helps track the statistics of the input data and dynamics of a direct seque...

The lack of interoperability between mobile cellular access networks has long been a challenging obstacle, which telecommunication engineering is trying to overcome. In second generation networks for example, this problem lies in the fact that there are multiple standards. Each of these standards can operate in the same frequency range. However, each utilizes a different Radio Technology and Mo...

In cellular wireless CDMA systems, it is required that the base station receives constant power signals from mobile users, in order to guarantee link quality. This is achieved by properly adjusting the uplink transmitted power of each mobile. Usually, the base station is responsible for informing each individual mobile of the power adjustment. However, when the radio channel varies drastically ...

In this paper we present the findings of a case study on the development of a radio frequency identification (RFID) prototype system that is integrated with mobile commerce (m-commerce) in a container depot. A system architecture capable of integrating mobile commerce and RFID applications is proposed. The system architecture is examined and explained in the context of the case study. The aims ...

During the last decade, it has been well understood that communication over multiple antennas can increase linearly the multiplexing capacity gain and provide large spectral efficiency improvements. However, the majority of studies in this area were carried out ignoring cochannel interference. Only a small number of investigations have considered cochannel interference, but even therein simple ...