A Low Latency Coding Scheme: Semi-Random Block Oriented Convolutional Code

In this paper, we propose a low latency coding scheme called Semi-Random Block Oriented Convolutional Code (SRBO-CC) which is similar to the Block Markov Superposition Transmission (BMST) but has short layer length. The SRBO-CC has a block oriented encoding process, where the input sequence is firstly encoded by a structured code and then superimposed on the random transformation of the previous inputs. The SRBO-CC is typically non-decodable by the Viterbi algorithm. Therefore, we analyze the tree structure of the SRBO-CC and employ the sequential decoding algorithm to decode the SRBO-CC. Simulation results show that the SRBO-CC performs well at low latency, suggesting that the SRBO-CC can be a promising solution for Ultra-Reliable and Low Latency Communication (URLLC).