Fast LDPC GPU Decoder for Cloud RAN

The graphical processing unit (GPU), as a digital signal accelerator for cloud RAN, is investigated. This letter presents new design 5G NR low-density parity check code decoder running on GPU. algorithm flexibly adaptable to GPU architecture achieve high resource utilization well low latency. It improves the layered by increasing parallelism single word. flexible (on 24 core GPU) was found have $5\times $ higher throughput compared recent flooding and notation="LaTeX">$3\times field programmable gate array (FPGA) (757K gate). exhibits 1/3 decoding power efficiency of FPGA typical general-purpose processors. For rapid deployment flexibility, GPUs may be suitable RAN accelerators.