Scarce wireless bandwidth and limited capabilities of cellular systems demand new, complementary techniques for the provision of wireless multimedia services. Hybrid systems coupling for example the digital terrestrial television (DVB-T) system with cellular communication systems provide a feasible solution to this problem. This paper describes a hybrid system, composed of DVB-T and the new GSM...

In this paper, we investigate different antenna diversity concepts, which can be easily applied to orthogonal frequency division multiplexing (OFDM) systems. The focus is on standard compatibility, i.e. these schemes can be implemented to already existing OFDM systems without changing the standards. The introduced diversity techniques are applied exemplarily to the DVB-T system. Bit error perfo...

This paper presents some aspects related to the DVB (Digital Video Broadcasting) investigation. The basic aspects of DVB are presented, with an emphasis on DVB-T version of standard. The main purpose of this research is to analyze the way that the transmission of the transport streams is realized in case of the Terrestrial Digital Video Broadcasting (DVB-T). To accomplish this, first, Digital V...

Divinylbenzene (DVB) is produced by catalytic dehydrogenation of DEB at high temperature and atmospheric pressure. Ethylvinylbenzene (EVB) is produced as a useful chemical during dehydrogenation of DEB. Also some other liquid and gaseous by products is produced during dehydrogenation. A set-up has been developed to conduct the DEB dehydrogenation reactions experiments to prepare DVB at differen...

The future of Digital Video Broadcasting (DVB) is moving towards solutions for efficient delivery of interactive IP multimedia services over DVB networks to handheld terminals. One of the most promising technologies is DVB-Handheld (DVB-H), at present under standardisation. Services deployed via this type of DVB technologies should enjoy reliability comparable to TV services and high quality st...

Orthogonal frequency division multiplexing (OFDM) is a new technique for data transmission. Conforming to the final draft of OFDM-based DVB-T (ETSI EN 300 744 V1.6.1), which is intended for digital terrestrial television broadcasting, a DVB-T baseband system is designed. The system performance is simulated in MATLAB using Simulink. Then it is implemented on Field Programmable Gate Array (FPGA) ...

W ireless systems continue to attract immense research and development effort. Recent years have seen major technological advances, including the rollout of 2.5G and 3G cellular infrastructures as well as the advent of broadband fixed-wireless access (BFWA) systems and digital video broadcasting (DVB). “Wireless beyond 3G” is a new concept that envisions cellular, BFWA, and DVB systems cooperat...