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A pragmatic distributed algorithm (PDA) is proposed for supporting the efficient spectral access of multiple Primary Users (PUs) and Cognitive Users (CUs) in cooperative Cognitive Radio (CR) networks. The novelty of our PDA is that the PUs negotiate with the CUs concerning the specific amount of relaying and transmission time, the CU is granted, which the CU will either accept or decline. The CUs...
In the following paper, we study the tradeoff between network utility and network lifetime for energy-constrained wireless sensor networks (WSNs). By introducing a parameter r, we combine these two objectives into a single weighted objective, and consider rate control and routing in this tradeoff framework simultaneously. First, using the dual decomposition method, we decompose the tradeoff model...
In the following paper, we study the tradeoff between network lifetime and network utility for energy-constrained wireless sensor networks (WSNs) with the real-time requirement. By introducing a parameter r, we combine these two objectives into a single weighted objective, and consider rate control and routing in this tradeoff framework simultaneously. For real-time requirement, we set up real-time...
This paper describes distributed and dynamic algorithms for TDMA channel scheduling in WIA-PA network with multiple channels. The main objective of the channel scheduling algorithm is to reduce the computation time while maximizing the utilization of the network resources, thereby improving the network throughput, reducing the transmission delay, and decreasing the number of retry. In this paper,...
This paper addresses the problem of planning paths for multiple mobile robots moving in the same environments. We try to decrease the computational complexity of path planning, which is one of the fundamental limiting characteristics in the existing work of path planning. Unlike many other approaches to this problem, we assume the robots are restricted by the limited-communication range such that...
This paper examines the problem of coordinating multiple robotic pursuers in locating and tracking a non-adversarial mobile evader in a dynamic environment. We have proposed a probabilistic and distributed algorithm in this paper. Our method considers the uncertain state information of the pursuers and the evader using the probabilistic formulation of the pursuit-evasion problem, in order to minimize...
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