The OFDM based terrestrial digital video broadcasting system (DVB-T) can be utilized for asymmetric Internet access with a downlink peak bit rate of 10-20Mbps. A narrow-band cellular communications system can be used as uplink. This paper is a comparison of centralized dynamic radio resource management schemes for this downlink packet radio system. Spectrum efficiency in bit/s/Hz/transmitter, a...

In this paper a view of the world-wide developments in the field of wireless broadband multimedia communications is given first. Taking this into account, a multi-disciplinary approach is presented as a combination of: promising applications, novel user-interfaces, compression, protocols geared to the mobile user and transmission techniques that give abundant bandwidth to the user. The insights...

Retinoids are synthetic and natural analogues of vitamin A that have various effects on cellular differentiation, cellular proliferation, immune system, and embryonic development. The present study reviews the history of systemic retinoids in medicine, the structure of syn

With Digital Video Broadcasting (DVB) technology, high data rates (30 – 50 Mbit/s) can be supported. Using terrestrial radio as a transmission medium, small antennas are sufficient for reception, even in moving vehicles and mobile terminals. Using DVB, not only digital television programmes can be transmitted, but also any data content based on Internet standards. Combining DVB broadcast techno...

Objective(s): The use of antisense oligonucleotides (AOs) to restore normal splicing by blocking the recognition of aberrant splice sites by the spliceosome represents an innovative means of potentially controlling certain inherited disorders affected by aberrant splicing. Selection of the appropriate target site is essential in the success of an AO therapy. In this study, in search for a splic...

Abstract Purpose of this paper: The objectives of this paper are two folds: (1) utilizing hierarchical fuzzy technique for order preference by similarity to ideal solution (TOPSIS) approach to evaluate the most suitable RFID-based systems decision, and (2) to highlight key risks and benefits of radio frequency identification technology in healthcare industry. Design/methodology/approach: R...

We argue that achieving very high data rates can be accomplished by moving away from system-centric radio resource management (RRM), used in the cellular radio access network (RAN) architecture, and toward advanced user-centric RRM, obtained with top-down RAN protocol design. Systemcentric RRM uses a divide-and-conquer approach, which assigns resources to cells first and to users second. On the...

The advanced cellular network, Long Term Evolution (LTE) which presently operates in licensed spectrum has been extended to Unlicensed LTE (U-LTE) by Qualcomm and Ericsson to improve data rate and spectral efficiency by utilizing unlicensed spectrum. Carrier Aggregation of 3GPP LTE-A supports the aggregation of licensed and unlicensed spectrum in small and femto cells to provide better user exp...

In a cellular network it's very difficult to make spectrum resource more efficiently. Device-to-Device (D2D) technology enables new service opportunities, and provides high throughput and reliable communication while reducing the base station load. For better total performance, short-range D2D links and cellular links share the same radio resource and the management of interference becomes a cr...

Multimedia applications require from wireless communications service providers to provide service mix traffic (voice, data, and real time audio/video) to the end wireless subscriber .WCDMA has been chosen as a basic radio access technology for UMTS/IMT-2000 [1] to support multimedia services. Throughput and spectral efficiency are fundamental parameters in capacity planning for 3G cellular netw...