Design and Implementation of Bit-Coupled Recursive Decoding for Turbo Codes for IoT Networks

Abstract

The internet of things framework has seen a rapid change in terms of the applications and users worldwide. However, the need for trustworthiness to satisfactory quality of service is of utmost importance keeping in mind the nature of data transfer in wireless media. The advent of high compute power processors with miniature sizes and low power consumption, implementing relatively complex algorithms has become possible which is necessity for internet of things applications. This research paper focusses on the design and implementation of the code blocks of turbo codes based on the BCJR algorithm so as to couple the bits in the code blocks in the composite transport block. The information and parity bits are to be coupled so as to have more information sharing within the transport block and hence reduce the error rate steeply in section of the error waterfall. The proposed technique attains lower bit error rate performance compared to the conventional un-coded and hard coded counterparts. A comparative analysis with respect to the error rate has been done so as to evaluate the quality of service of the proposed work. The lower error rate of the proposed work ensures the high quality of service and trustworthiness of the IoT system. Keywords: Internet of things, Turbo Codes, trustworthiness, error rate, bit sharing.