Code-division multiple-access (CDMA) schemes appear to be very promising access techniques for coping with the requirements of third-generation mobile systems, mainly because of their flexibility. This paper proposes an adaptive S-ALOHA DS-CDMA access scheme as a method for integrating nonreal-time (i.e., Internet applications) and real-time (i.e., voice) services in a multicell scenario by exp...

In this paper we introduce and advocate the use of multiple description coding (MDC) in presence of channel diversity for fourth generation (4G) wireless communication networks. MDC allows to use the spectrum efficiently and simultaneously supporting heterogenous terminals. In this paper the investigations are made for voice and video type traffic. We present the drawbacks of the MDC scheme in ...

The emerging 3 generation services are provided through various types of networks and terminals. Roaming users rely on new kinds of wireless networks and terminals to offer mobility and make services available everywhere. The users’ requirement for continuous access to personalized services from any place, transparently and independently of the underlying network technology and the terminal or ...

The construction of a cyber physical system in a power grid provides more potential control strategies for the power grid. With the rapid employment of intelligent terminal equipment (e.g., smart meters and intelligent appliances) in the environment of a smart grid, abundant dynamic response information could be introduced to support a secure and stable power system. Combining demand response t...

More than 40% of the human genome is generated by retrotransposition, a series of in vivo processes involving reverse transcription of RNA molecules and integration of the transcripts into the genomic sequence. The mechanism of retrotransposition, however, is not fully understood, and additional genomic elements generated by retrotransposition may remain to be discovered. Here, we report that t...

Because of limitation of low power and computational ability in mobile video devices, it is significant to develop energy-efficient wireless video compression methods for mobile video systems. In this paper, a new approach to low complexity wireless video compression is proposed, based on Wyner-Ziv coding theorem. The proposed method encodes video only by intracoding techniques and detection of...

Organizational simulations have been used in business, manufacturing, and engineering design tasks to gain insight into organizational process bottlenecks, and to improve the quality and efficiency of processes within these industries. As market pressures demand increased efficiencies within the health care industry, organizational simulation techniques could provide similar insight into the de...

This demonstration shows parts of the Ambient Wood experience project which has taken place in an English woodland setting during the past year. The project provides a playful learning experience for schoolchildren on a digitally enhanced field trip. A WiFi network was installed in the woods to enable communication with PDAs and a collection of innovative devices was designed to aid interactive...

Technical developments in information technologies coupled with business interests to improve promotion productivity, are spurring research in the area of information systems for sales promotion in retail industry, which facilitate promotion analysis and automate promotion implementation. Auto Promotion Machine (APM), presented in this paper, can perform promotion analysis based on consumer per...