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This paper reports an experimental demonstration of a 32-Gbit/s wireless link using orbital angular momentum (OAM) and polarization multiplexing in a millimeter-wave regime at 60 GHz. Results of the analysis show that a higher carrier frequency reduces the propagation loss as well as the size of the transmitter and receiver, particularly for OAM channels with higher OAM values. Further, two different...
Vehicular Ad Hoc Networks (VANETs) represent promising technologies for comfort driving and entertainment applications which rely heavily on the data downloading. Due to the rapid change of network topology and intermittent connection, it is a big challenge to satisfy the download requirements from multi-vehicles at the same time. This paper proposes a Bus-Based Content Downloading (BBCD) which aims...
We consider an energy harvesting network with multiple transmission links in a frequency-selective fading channel. We formulate the problem of joint energy and subchannel allocation for all transmitters over a scheduling period, as a mixed integer program. With the predictions of the harvested energy and subchannel gains, we propose an algorithm to efficiently obtain the energy-subchannel allocations...
In this paper, we propose two limited feedback based underlay spectrum sharing schemes in Poisson cognitive radio networks without and with primary exclusive regions, respectively. Both primary and secondary transmitters are Poisson distributed nodes with limited feedback of channel quality information from their local receivers. The primary transmitters are active if their local primary channels...
Touch screens have become more and more popular in many end devices. For example, Windows 7, Android, and iOS have adopted several multi-touch commands in their user interfaces. Although touching the screen of a small device is handy, it is not suitable for larger screen environments. In this paper, we propose a glove-shaped input device that can simulate screen-touching operations by hand gestures...
The rapid development of wireless communication and information technologies has increased research interests in inter-vehicle communication system. In this paper, we study the throughput and end-to-end delay of an inter-vehicle communication system along a unidirectional dynamic traffic flow with shockwave for different transmission ranges of wireless units. We briefly introduce the traffic flow...
There is a promising development in wireless communications technology which indicates that road accidents could be significantly reduced if vehicles were allowed to communicate with each other. By regularly exchanging their current position, velocity, etc., vehicles could predict an upcoming accident and alert the human drivers in time or proactively take precautionary actions to avoid the accident...
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