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Carrier sense multiple access with collision avoidance (CSMA/CA) is one of the basic media access control (MAC) protocols specified in the IEEE 802.11 to support many stations to share a channel in the network. This paper analyzes how the performance of CSMA/CA is affected by the back-off time. We propose to use random back-off time and simulation results show that it can achieve better performance...
Reaching consensus in a network is an important problem in control, estimation, and resource allocation. While many algorithms focus on computing the exact average of the initial values in the network, in some cases it is more important for nodes to reach a consensus quickly. In a distributed system establishing two-way communication may also be difficult or unreliable. In this paper, the effect of...
Every health care system employs a set of protocols to manage and reduce the impact of infectious disease whenever it appears within the population. Although a great deal of research has been conducted to determine when an outbreak is occurring, research pertaining to whether the response policies are effective is not easily located. Much of the difficulty lies in selecting an appropriate modelling...
This paper presents an analytical model which extends Markov Chain models previously proposed for IEEE 802.11 data link protocol. Unlike already published models, the proposed Markov Chain accounts jointly for the following three factors. First, in addition to collision, it accounts for frames that may be lost due to a low signal-to-noise ratio value at the link receiver (frame corruption). Second,...
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