2024/07/03 by Carlo Condo, Condo, Carlo
Engineering · #Advancements in PLL and VCO Technologies #FOS: Computer and information sciences #Hardware Architecture (cs.AR) #Photonic and Optical Devices #Radio Frequency Integrated Circuit Design
paper · pdf · doi:10.48550/arxiv.2407.03497
openalex publication_date 2024/07/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Ultra-Reliable Low-Latency Communications (URLLC) in both 5G and 6G demand high throughput and short latency with low error rates. Guessing Random Additive Noise Decoding (GRAND) and Ordered Reliability Bits GRAND (ORBGRAND) are powerful universal decoding algorithms that work well with short, high-rate codes. As short forward error correcting codes can help limiting latency, and code unification in 6G calls for flexible, possibly code-agnostic decoders, GRAND and ORBGRAND are well suited to tackle 6G URLLC. This work proposes a ultra-high, constant speed ORBGRAND decoder architecture with very low worst-case and average latency. Compared to a baseline architecture, through out-of-order output, aggressive clock gating, and selective programmability, the decoder reduces area, power, and average latency by 15.5%, 19.4%, and 56%, respectively. In 3nm FinFET technology, it achieves a constant throughput of 95.49Gb/s, with 29.59ns worst-case latency and 13.02ns on average.