CHANNEL ASSIGNMENT ALGORITHM BASED ON INTERFERENCE REDUCTION FOR MULTI-RADIO MULTI-CHANNEL WIRELESS MESH NETWORKS
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Abstract
Multi-Radio Multi-Channel Wireless Mesh Network emerged as a flexible solution for real time applications. Rapid growth in demand of high speed networks leads towards multi-radio and multi-channel concepts in network. The concept of multi-radio increases the parallelism of data transfer and enhances the network performance. Each radio works on different frequency channel. Due to availability of limited numbers of non-overlapping channels, co-channel interference exists in network and degrades the network performance. An efficient channel assignment algorithm is required to minimize co-channel interference and to increase the network capacity. In this paper a channel assignment algorithm based on interference reduction has been proposed to mitigate co-channel interference and to enhance the network performance. NS-3 based WiMesh simulation tool has been used to evaluate the effectiveness of proposed algorithm in terms of throughput, delay and packet loss. Proposed algorithm has been validated and compared with Optimal Power Control algorithm and found that proposed algorithm performs better and enhances the network performance.
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