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In this paper, we propose an intelligent routing protocol for wide-area Ad Hoc network. This protocol was designed based on both the on-demand routing protocol and table-driven routing protocol. In our routing protocol, QoS guarantee mechanism was taken into consideration, and business was divided into three types and each type enjoys different service priorities. So it's an intelligent routing protocol...
Paper improved dynamic queue assignment algorithm cross — layer optimization unequal protection under IEEE 802.11e was proposed. In this algorithm, queue AC[1] and AC[0] were utilized to transmit video frame. Queue priorities, which were utilized to map with video frame priorities, were calculated accord to queue status. The proposed algorithm assigned a queue for a video flame according to the priority...
Basing on analysising the importance of maintenance support process modeling and simulating, we have analysised the application characteristics of Petri model used in the process simulation. Then, aiming to some equipment system maintenance support process, we established the corresponding TTPN model. At last, by simulation we analysised indexes such as the ratio of resource using and the ratio of...
Vehicle Routing Problems have been extensively analyzed to reduce transportation costs. More particularly, the Dynamic Vehicle Routing Problem with Time Windows (DVRPTW) imposes the period of time of customer availability and the request time of customer as two constraints, which precisely reflects the real world situations. Using minimization of the total distance as the main objective to be fulfilled,...
For getting the accurately coal gas concentration, according to the its nonlinear characteristics and time series chaotic characteristics, established a forecasting model, using chaos theory and RBF neural network. To get the training samples, it reconstructed gas concentration time series. Using MATLAB simulation to forecast analysis, the result shows that the relative prediction error is from 0...
A programmable DCO-based digital clock multiplier and divider is presented in this paper. The multiplication ratio M and division ratio D can be programmed from 2 to 32, and 1 to 32, respectively. The proposed architecture uses a coarse tune circuit to reduce the lock time and a phase maintenance mechanism to overcome the process, voltage, and temperature (PVT) variations. With a new switching control...
This paper presents a 10Gb/s concatenated BCH iterative decoder of super FEC. This iterative decoder consists of 3 row decoding modules and 2 column decoding modules which are cascaded together. Parallel decoding strategy is employed in the row decoder which reduces the total decoding latency from 1928 cycles to 578 cycles. Taking advantage of RAM blocks, the implementation of column decoding becomes...
Peer-to-Peer (P2P) technology under wireless environment is now attracting more and more attention with development of wireless communication technologies and handheld device performance. Some ant colony (AC) optimization methods on mobile P2P network can adapt topology change of wireless network, but routing query does not take limited power problem of handheld devices into account. The paper presents...
The reliability of multicast communication has a strong challenging area of research and very popular in current computer networks. In this paper, based on the high reliability transmission, we proposed a minimum cost with delay-constrained multicast routing algorithm named MART, and described a network topology model with multiple QoS-constrained. The algorithm tries to minimize the cost of multicast...
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