Implementation of a High-Throughput Fast-SSC Polar Decoder with Sequence Repetition Node

07/21/2020

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by   Haotian Zheng, et al.

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Even though polar codes were adopted in the latest 5G cellular standard, they still have the fundamental problem of high decoding latency. Aiming at solving this problem, a fast simplified successive cancellation (Fast-SSC) decoder based on the new class of sequence repetition (SR) nodes has been proposed recently in <cit.> and has a lower required number of time steps than other existing Fast-SSC decoders in theory. This paper focuses on the hardware implementation of this SR node-based fast-SSC (SRFSC) decoder. The implementation results for a polar code with length 1024 and code rate 1/2 show that our implementation has a throughput of 505 Mbps on an Altera Stratix IV FPGA, which is 17.9