applications are mobile communication terminals, digital consumer equipment, and multimedia systems. One example of digital consumer equipment is the digital still camera. Hitachi has developed a digital camera system based on the SH-DSP (Fig. 1). ABSTRACT: Recently sales have grown markedly in the field of mobile communication terminals such as global system for mobile communications (GSM), pe...

This contribution proposes for Recommendation G.812 (1) a holdover specification for Clock Type II that is consistent with the current specification of 10 per day and is not broken into aging, temperature, and initial offset components and (2) a modification to the output wander TDEV mask, to apply only to Types II and III, to make the mask consistent with the respective wander generation TDEV ...

Key management plays fundamental role in research on security service in wireless sensor networks (WSNs). However, due to the resource constraints, establishing pairwise keys in WSNs is not a trivial tasks. Several exiting key management schemes have been proposed in literature to establish pairwise keys between sensor nodes, but they either can not offer strong resilience against node capture ...

Telecommunication systems have become a critical part of society which enables connectivity to many essential and trivial services. Consequently, telecommunication equipment is housed in cabinets protect the electronics from variety hazards; one temperature-related failure. Current practices use notable amount power for thermal management can be reduced by considering alternative methods coolin...

There is a need to back up critical timing infrastructure at the national level. This paper describes a joint project employing commercial equipment to send national timing signals through a telecommunication network. This experiment connects UTC(NIST) in Boulder, Colorado with UTC(USNO) at the Alternate Master Clock at Schriever AFB via a telecommunication provider's optical network using the ...