High-Throughput Low-Latency Encoder and Decoder for a Class of Generalized Reed–Solomon Codes for Short-Reach Optical Communications
B. Zheng, Carlo Condo, Warren J. Gross, Odile Liboiron-Ladouceur · IEEE Transactions on Circuits & Systems II Express Briefs · 2019
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 ×11.5 for the encoder, with respect to a conventional architecture, while the latency is reduced by ×10.3. These improvements respectively amount to ×14.7 and ×7.5 for the decoder.