In this paper we present CamTalk, a novel bidirectional communications framework using front-facing cameras and displays of smartphones. In the CamTalk framework, two smartphones exchange information via barcodes: information is encoded into barcodes that are displayed on the screen of the origin device, and those barcodes are captured by the front-facing camera of the destination device and de...

The term device-to-device (D2D) communications refers to direct short-range communications between terminals of a mobile network, without the intermediate transmission to a base station (BS). Differing from conventional approaches, such as Bluetooth and WiFi-Direct, D2D communications utilize licensed spectrum with quality of service (QoS) guarantees, while no manual network detection-selection...

S ound has been largely ignored or dismissed in digital communications. Given that computer systems have been traditionally aimed at long-distance and high-bit-rate communications, this dismissal is understandable. The data rates for sound are relatively low compared to media such as radio, and the sounds can be annoying. Designers of most current digital communication systems assume applicatio...

A short range wireless network platform, based on Bluetooth technology and on a Round Robin scheduling is presented. The objective is to build an application independent platform, to support a distributed sensing and actuation control system, which will be used in an Unmanned Aerial Vehicle (UAV). This platform provides the advantages of wireless communications while assuring low weight, small ...

In this short paper we present a technology brief on current Internet trends in its migration towards a communications infrastructure that may support business to business communications. In particular we look at the notion of policy managed networks and existing technologies that may be integrated to meet this goal in some way. Finally, we present some research issues that need to be resolved ...

Short-reach transmission systems traditionally utilize intensity modulation (IM) at the transmitter and direct detection (DD) receiver due to their cost-effectiveness, small footprint, low power consumption. However, with exponential increase in bandwidth demand, coherent optical communication have become necessary for long-haul distances, requiring application-specific integrated circuits (ASI...