International Conference on Computer and Electrical Engineering 4th (ICCEE 2011)
28 An Energy Efficient Hybrid Code Combining Technique for Cluster-Based Cooperative Wireless Networks
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In this paper, an energy efficient hybrid code combining technique is proposed for a cluster based cooperative wireless networks. Our scheme uses hybrid of selective repeat ARQ and low density parity check (LDPC) for code combining techniques. In the existing cluster based code combining techniques, energy consumption is more in the cluster heads and hence the energy level of the cluster head is drained before the data reaches the destination. In order to overcome this, a clustering technique is proposed in which the selection of cluster heads is based on the connectivity and the residual energy of each node. The clustering architecture consists of source cluster, destination cluster and relay clusters. Initially the ARQ technique is used as the code combining technique when the energy level of the nodes in cluster is more. The encoding and the decoding are done at each cluster using the LDPC codes until the data reaches the destination cluster. Using this technique, we can obtain immediate error recovery with less energy consumption.