నైరూప్య

VLSI Architecture of High Performance Turbo Decoder for Wireless Sensor Networks

Dr.J.M.Mathana S.Gunasekar, S.Jagadish, R.Karthik

The sensor nodes of a wireless sensor network (WSN) are typically required to maintain sporadic but reliable data transmissions for extended periods of time. However, in applications the sensor nodes have to be small, preventing the use of bulky batteries. The outstanding forward error correction capabilities of turbo codes made them part of many today’s communications standards. And also turbo codes have recently been considered for energyconstrained wireless communication applications, since they facilitate low transmission energy consumption. In this paper, a new low complexity ACS (add compare and select) architecture is introduced in the proposeddesign.The proposed turbo decoder is based on the LUT-Log-BCJR architecture.Entire decoder architecture is coded using Verilog HDL and it is synthesized using Xilinx EDA with Spartan 3E FPGA