High-Throughput Low-Latency Encoder and Decoder for a Class of Generalized Reed–Solomon Codes for Short-Reach Optical Communications

摘要

Forward error correction is imperative in most communication systems. Applications like short-reach optical communications have a limited power and area occupation budget for encoder and decoder implementation. In this brief, we propose high-throughput low-latency Reed Solomon (RS) encoder and decoder architectures, compatible with a recently proposed class of generalized RS codes. The architectures are synthesized in TSMC 65 nm CMOS technology, showing a significant performance improvement with moderate hardware cost and power consumption. Throughput is increased by $ {imes 11.5}$ for the encoder, with respect to a conventional architecture, while the latency is reduced by ${imes 10.3}$ . These improvements respectively amount to ${imes 14.7}$ and ${imes 7.5}$ for the decoder.