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—Recently, indoor positioning systems (IPSs) have been designed to provide location information of persons and devices. The position information enables location-based protocols for user applications. Personal networks (PNs) are designed to meet the users' needs and interconnect users' devices equipped with different communications technologies in various(More)
Quality of service QoS support in Mobile Ad-hoc NETworks MANETs i s a c hallenging task. Most of the proposals in the literature only address certain aspects of the QoS support, e.g., QoS routing, QoS medium access control MAC and resource reservation. However, none of them proposes a QoS model for MANETs. Meanwhile, two QoS models have been proposed for(More)
Universal Mobile Telecommunications System (UMTS) is a third-generation mobile communications system that supports wireless wideband multimedia applications. This paper investigates the video quality attained in streaming MPEG-4 video over UMTS networks using an integrated tool environment, which comprises an MPEG-4 encoder/decoder, a network simulator and(More)
Advanced relaying technologies are part of the next-generation wireless broadband network architecture. In this paper, we derive the average capacity expressions of in-band full-duplex relays operating in the Amplify-and-Forward (AF) and the Decode-and-Forward (DF) modes in the present of spatial diversity. The capacity of the in-band full-duplex AF and DF(More)
Universal Mobile Telecommunications System (UMTS) is a third-generation cellular network that enables high-speed mobile Internet access. This paper evaluates and compares the performance of two well-known versions of Transmission Control Protocol (TCP), namely, Vegas and Reno, in a UMTS environment. Bulk data transfer was considered in the simulation with(More)
Universal mobile telecommunications system (UMTS) is a third-generation mobile communication system that supports wireless wideband multimedia communications. This paper investigates the performance of streaming MPEG-4 video over UMTS dedicated channels with varying channel conditions. In order to evaluate the performance, simulation models for UMTS and(More)