This paper reviews the potential channel decoding techniques for ultra-reliable low-latency communications (URLLC). URLLC is renowned for its stringent requirements including ultra-reliability, low end-to-end transmission latency, and packet-size flexibility. These requirements exacerbate the difficulty of the physical-layer design, particularly for the channel coding and decoding schemes. To satisfy the requirements of URLLC, decoders must exhibit superior error-rate performance, low decoding complexity, and universality to accommodate various coding schemes. This paper provides a comprehensive review and comparison of different candidate decoding techniques for URLLC in terms of their error-rate performance and computational complexity for structured and random short codes. We further make recommendations of the decoder selections and suggest several potential research directions.

翻译：本文回顾了超可靠低延迟通信的潜在解码技术(URLLC) URLLC以其严格要求而著称,包括超可靠性、低端对端传输延迟度和包尺寸灵活性等,这些要求加剧了物理层设计的困难,特别是频道编码和解码计划的困难。为满足URLC的要求,解码器必须表现出较高的错误率性能、低解码复杂性和普遍性,以适应各种编码计划。本文全面审查和比较了URLC的不同候选解码技术,包括错误率性能和结构化或随机短码的计算复杂性。我们进一步提出解码器选择的建议,并提出若干可能的研究方向。