基于LEACH的无线传感器网络协同通信新方案

2011 International Conference on Computational Intelligence and Communication Networks Pub Date : 2011-10-07 DOI:10.1109/CICN.2011.10

N. Purohit, H. Agrawal, A. Jain

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引用次数: 11

摘要

无线传感器网络需要高效节能的协议来执行各种操作。节点之间的合作可以通过避免远程节点的重传而节省大量的能量。本文提出了一种新的基于LEACH的无线传感器网络方案，通过引入簇头之间的协作。在普通无线传感器网络的可比总寿命下，BER有了显著的改善。操作阶段采用刺破卷积信道编码协同通信，聚类阶段采用点对点传输技术。仿真中考虑了瑞利衰落信道和中继节点重传带来的额外能量消耗。研究发现，无线传感器网络的误码率(BER)和总寿命与无线传感器网络中的合作节点数量、传感器节点密度等因素有关。

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A New Scheme for Cooperative Communication in LEACH Based Wireless Sensor Network

Wireless Sensor Networks need energy efficient protocol for carrying out various operations. Cooperation among nodes may save significant energy by avoiding retransmission from distant nodes. In this work, a new scheme has been suggested for LEACH based WSN by introducing cooperation among various cluster heads. Significant improvement in BER has been observed for comparable overall lifetime of ordinary WSN. Cooperative communication with punctured convolutional channel coding is used in operation phase where as point to point transmission technique is used in clustering phase. Rayleigh fading channel and additional energy consumption due to retransmissions by relay nodes has been accounted in simulation. Bit error rate (BER) and overall life time of WSN is found to be dependent on the number of cooperative nodes, sensor nodes density in WSN, etc factors.

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2011 International Conference on Computational Intelligence and Communication Networks

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