16-channel two-parallel reed-solomon based forward error correction architecture for optical communications

This paper presents a high-efficiency two-parallel Reed-Solomon (RS) decoder based on the compensated simplified reformulated inversionless Berlekamp-Massey (CS-RiBM) algorithm. To achieve high speed and low hardware complexity, the key equation solver (KES) block is designed by pipelining and folding processing. With TSMC 90nm process, the simulation results reveal that the 16-Channel proposed architecture can operate up to 625MHz and achieve a throughput rate of 156 Gbps with a total gate count of 269,000. The area of the proposed decoder is at least 35.6% fewer with the same technology, which meets the demands of next generation short-reach optical systems.