Energy efficient V-MIMO using turbo codes in Wireless Sensor Networks

Abstract

Energy efficiency is a crucial challenge in wireless sensor networks (WSN). In this paper, Turbo Coded Cooperative Communication (TCCC) has been proposed to reduce the energy consumption of the wireless sensor nodes. An energy model for Virtual Multiple-Input-Multiple-Output (V-MIMO) cooperative communication using turbo codes is also presented. The proposed technique is energy efficient as it requires lesser transmit energy per bit when compared to conventional uncoded schemes. The energy consumption of uncoded cooperative communication is compared with coded cooperative communication. The effect of code rate, number of participating nodes, channel conditions, target Bit Error Rate (BER) on the total energy consumption is also investigated. From the simulation results, it is evident that the proposed turbo coded cooperative communication with BPSK achieves energy saving of 11.36% when compared with the respective uncoded cooperative communication.