Millimeter-wave (mm-Wave) band channel modeling and characterization are essential for system design analysis in the fifth generation (5G) future communication systems. Reliable sounding deployment scenarios is required accurate realistic characterization. In state of art, directional scanning (DSS) virtual antenna array (VAA) two popular methods due to their simplicity cost-effectiveness. The ...

Virtual worlds are mostly inaccessible to blind users, due to their exclusively graphical interfaces. We developed the Perspective viewer for Second Life and OpenSim virtual worlds, which enables blind users to explore and navigate Second Life virtual worlds with relative ease. The Perspective viewer allows different tools to be modularly added to the viewer, to enable comparison amongst differ...

In this paper we consider MIMO system with Mt transmitting and Mr receiving antennas, when channel state information (CSI) is known on the transmitter side. The Reyleigh fading channel propagation condition is assumed. In this case, the optimum transmission consists of allocating the transmitted power for each virtual sub-channel related to the corresponding eigenvalue of the channel matrix. Th...

We need an efficient channel assignment algorithm for increasing channel re-usability, reducing call-blocking rate and reducing interference in any cellular systems with limited bandwidth and a large number of subscribers. We propose an efficient hybrid genetic algorithm for a fixed channel assignment problem with limited bandwidth constraint. The proposed GA finds a good sequence of codes for ...

An emotion-related channel was combined with electronic chat in a 3D virtual communication environment. Users can convey specific feelings by manipulating the facial expressions and gestures of their 3D characters (avatars). To examine the effects of the emotion-related channel, an experiment was carried out in two elementary schools with fiftyfive student participants. It was found that the ch...