Vehicle detection systems play a significant role in intelligent transportation (ITSs). At present, vehicle is realized either by very costly inductive loops, video cameras that require good weather conditions and high computing resources, or recently developed magnetic sensors only obtain limited accuracy congested traffic conditions. To overcome these challenges, this paper develops passive r...

Seamless handover and QoS provision of applications in converged DVB-H and Mobile IPv6 networks are discussed. The goal is to support efficiently interactive mobile broadcast/multicast services using unidirectional broadcast media (DVB-H) combined with bidirectional mobile access technologies (UMTS, WLAN, WIMAX) in heterogeneous Mobile IPv6 environments. In particular, the focus is: Handover st...

The paper investigates the possibility of reusing frequencies of a terrestrial digital video broadcasting (DVB-T) network for a UMTS Terrestrial Radio Access Network (UTRAN) with negligible influence on the DVB-T performance. A frequency division duplex (FDD) UTRAN is deployed such that it can reuse all frequencies of the DVB-T network in each DVB-T frequency reuse cluster in the downlink, with...

By using the two-step activated swelling method, monodisperse porous poly(styrene-divinylbenzene) (P(S-DVB)) microparticles were successfully synthesized. The influence of porogens, swelling temperatures and crosslinking agents on the porosity of porous microparticles was carefully investigated. Porous P(S-DVB) microparticles were used as a packing material for high performance liquid chromatog...

Recently, DVB-H (digital video broadcasting–handheld) and DVB-IPDC (IP datacast over DVB-H) have been developed to support broadcasting services. DVB-H is designed to support digital video broadcast for handheld devices, while DVB-IPDC can integrate with an IP-relay network to complement the data loss problem in DVB-H. Assuming that WiMAX networks are adopted to support DVB-IPDC, this paper poi...

This paper presents an overview of some key QoS features that will enable the DVB/DAVIC protocol with a superior performance and efficiency at the Media Access Control (MAC) layer for the support of delay-sensitive applications. We show the deficiencies of the basic reservation request mechanism provided by the DVB/DAVIC MAC protocol and present a performance optimisation via simulation results...

There are different Standards of digital multimedia transmission, for example DVB in Europe and ISDB in Japan and DMB in Korea, with different delivery system (example MPEG-2, MPEG-4).This paper describe an overview of Digital Multimedia Transmission (DMT) technologies. The economic aspects of digital content & software solution industry as a strategic key in the future will be discussed. The s...

The VALIDATE project has verified the performance of the DVB-T specification in the laboratory and in field trials. Its successful collaboration has advanced DVB-T technology to the point where services are ready to start. Recent achievements include a multidimensional interworking demonstration, a transmitter specification, single-frequency network synchronisation and gap-filler transmitters (...

Let S2 be the 2-dimensional unit sphere and let Jα denote the nonlinear functional on the Sobolev space H1,2(S2) defined by Jα(u) = α 4 ∫

Orthogonal Frequency-Division Multiplexing (OFDM) is a spectrally efficient multicarrier modulation scheme, which is employed in the most advanced high-speed wireless communication systems, such as Digital Video Broadcasting (DVB) or Long-Term Evolution (LTE). However, one of its biggest shortcomings is that it produces a signal with a high Peak-to-Average Power Ratio (PAPR), which is undesirab...