0000000000081427
AUTHOR
Zhaohan Jia
GPS-based collision avoidance for moving vehicles : algorithm, implementation and testing
Masteroppgave i informasjons- og kommunikasjonsteknologi IKT590 2012 – Universitetet i Agder, Grimstad The high incidence of traffic accidents propels our concerns on collision avoidance for mobile vehicles, particularly for marine vehicles. In this project, on the one hand, we investigate an up-to-date algorithm for predicting the location of mobile vehicles. We evaluate the performance of accuracy of the studied algorithms while taking consideration to apply it on collision avoidance. On the other hand, we design and implement a prototype based on Android platform. The prototype provides Vehicle-to-Vehicle (V2V) communications to share the GPS information, and provides the measurement of …
Enable concurrent transmissions with beamforming for broadband wireless access in CSMA/CA-based WLANs
In CSMA/CA based wireless local networks, two stations are not allowed to transmit at the same time due to interference generated to each other, resulting in degraded throughput. Concurrent transmission, which enables simultaneous transmission of two or more stations under certain conditions, is able to overcome this problem, leading to enhanced channel utilization efficiency. Different from earlier work on this topic which focuses on omni-direction concurrent transmission, we introduce in this paper beamforming into a co-channel concurrent transmission scheme and investigate the benefits of concurrency with beamforming. The circumstances for concurrent transmission and frame scheduling are…