A double serial concatenated code using CRC-aided error correction for highly reliable communication

Abstract

Highly Reliable Communication (HRC) is an emerging paradigm for meeting the quality of service requirements of new applications such as intelligent vehicle networking and industrial Internet. HRC brings challenges to channel coding and multiple access. Various channel coding techniques have been proposed to improve reliability, but often suffer from limited reliability and high decoding complexity. This work presents a double serial concatenated code using CRC-aided error correction, abbreviated as DSC 3 EC , to improve reliability and reduce complexity. The encoding scheme is a double serial concatenated code, with the cascade of a set of CRC encoders, a linear block encoder, a series of interleavers , and a set of convolutional encoders . The decoding scheme consists of two modules: (i) decoding of serial concatenated codes, which includes the decoding of single parity check convolutional code (SPC-CC) and the decoding of Reed–Solomon convolutional code (RS-CC) for intra-block error correction at the physical layer to control BER; (ii) decoding of CRC-aided linear error correction, which can effectively identify, locate and correct error bits at the inter-block level to solve the problem of block loss caused by residual errors at the physical layer. Simulation results show that the joint scheme can effectively improve communication reliability while reducing complexity.