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Traditional cognitive radio network is considerably constrained in the spectrum sensing and the access by its limited power, memory and computational capacity. Fortunately, the advent of cloud computing bring the potential to mitigate these constraints due to its vast storage and computational capacity. This paper focuses on the cloud-based cognitive radio spectrum access strategy and provides an...
Cognitive radio networks will play important role in future wireless networks. This paper proposes a new resource allocation strategy in cooperative multi-relay cognitive radio networks, in which multi second users can work as the relays of primary users to accelerate the data transmission when the channel between primary transmitter and primary receiver is weak. In the strategy, the data transmission...
Based on the characteristics of electric vehicles (EV), this paper proposes a conceptual framework utilizing the Controller Area Network (CAN) bus technology, OBD-II connector and the existing telematics service systems to construct a novel telematics gateway for EV. Vehicle gateway interface has been applied to telematics service systems for many years but not to EV. The proposed framework of telematics...
Currently, off-line defense against the current operating system can not accurately detect the device error status, can not really prevent “walking space” and the construction of complex line against wrong operating system, electromagnetic interference and other drawbacks, the paper offers wireless communication line based on the operating system of error prevention. The system can accurately detect...
3G is the abbreviation of 3rd Generation. Meaning the third generation mobile communicating technology. It is that the new generation of mobile communicating that being tied in wedlock multi-media between mobile communication system and internet technology. The test has discussed the research and application of distance learning based on 3G network, and has analyzed the main technology and the structure...
The traditional remote data collection has the shortcomings such as the cover scope is small and the corresponding is unreliable, and the wireless network communication has better timeless and does not have the space limitation. The remote data collection and supervisory system based on GPRS/3G (General Packet Radio Service/The 3rd generation communication) network is discussed and designed in the...
This paper mainly introduces the design of the human-machine interaction module in a control system based on CAN (controller area network) bus, and the communication of the control system with CAN bus. The advanced AVR microcontroller is used to transmit and handle the data in the human-machine interaction module, in which ARM microprocessor and LED screen are used to achieve the show of data and...
The application development of embedded display terminal based on ARM microprocessor is studied, by applying 32 bit RISC key microprocessor technique, embedded software technology, embedded GUI (graphics user interface) technology, CAN bus communication technology, information storage and management technology etc.. The design of embedded hardware platform, of which the core is S3C2410CPU, is completed...
We present and verify the epsiv-optimal approximation scheme for on-demand multipath routing in ad hoc networks (epsiv-AOMDV), an extension to the well-studied ad hoc on distance vector (AODV). By introducing the hop count limiting parameter -epsiv, we modify the route update conditions and route discovery processes. The proposed protocol selects and maintains the multiple paths that are shorter than...
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