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Currently, privacy leakage has become a great concern when a web-based application is applied. The threats deriving from communications are generally caused by implementing lower-level security protocols. However, using a higher-level privacy protection approach is often restricted by the efficiency requirements, since an enhanced security level needs a longer execution time than the approach offering...
Recent years, Vehicular ad hoc Network (VANET) attracts tremendous attention due to its broad application prospects. However, channel fading, frangible link, unstable network topology caused by vehicles' high mobility and strict requirements to the quality of service (QoS) have become major challenges of VANET. Many algorithms have been proposed to ensure a stable network topology and it has been...
To support space division multiple access (SDMA) in the IEEE 802.11n downlink, a joint beamforming based MAC protocol, J-MAC is presented in this paper. An access point (AP) follows J-MAC, which employs multiple array antennas, and user equipments (UEs) follow the IEEE 802.11x standard which employ omni-directional MIMO antennas. J-MAC maintains full compatibility with 802.11x, and UEs do not change...
The OpenAirInterface (OAI) emulation platform is an effective tool to evaluate the performance of LTE and LTE-Advanced system, and test related algorithms and strategies. This platform aims at building a platform that is accuracy, repeatable and scalable. The complete features of OAI emulation platform are presented and the key technologies are introduced. In order to develop the platform for the...
The majority of encoder signal process circuits only support one type of the specific photoelectric encoder, either absolute encoder or incremental encoder. In order to realize the compatibility for both two types of encoders simultaneously, a novel encoder signal process circuit based on FPGA is presented in this paper. Firstly, a series of universal functions are analyzed and demonstrated. On this...
On chip many-core systems, evolving from prior multi-pro cessor systems, are considered as a promising solution to the performance scalability and power consumption problems. The long communication distance between the traditional multi-processors makes directory-based cache coherence protocols better solutions compared to bus-based snooping protocols even with the overheads from indirections. However,...
In order to better develop students' bilingual conversation abilities during bilingual instruction, an bilingual conversation ability training system based-on campus network was designed and implemented by the use of LAN real-time speech communication technology, so that the students could develop and improve their bilingual conversation abilities in cooperative learning manners. The practical application...
In order to improve the efficiency of a container terminal and shorten the turnaround time of ship in harbor, a coordinated scheduling strategy for berth and quay crane allocation based on MAS theory is put forward aiming at the relevance of berth and quay crane scheduling. Berth and quay crane are abstracted as distinct autonomy agent. The scheduling process is based on the interaction among multi...
Mobile ad hoc networks (MANET) is a dynamic wireless self-organizing networks. Owing to MANET take the characteristic of dynamic structure and wireless communication, it is much easy to suffer security threats. Fault-tolerance method allow system failure, it make the system continue to calculate effectively in the inaccurate case. Owing to the autonomy peculiarity of mobile agent, nobody natural entity...
Mobile ad hoc networks is a dynamic wireless self-organizing networks. Routing techniques is a greatly import part of wireless networks protocol. Some recent routing protocol take into account secure factor, but these protocols yet cannot sufficient the actual demand because of the various forms of attacks to mobile self-organizing networks and self frangibility of mobile ad hoc networks. In this...
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