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New Enhanced Degree Computationless Modified Euclid's Algorithm and its Architecture for Reed-Solomon decoders  

Baek, Jae-Hyun (아주대학교 전자공학부 SOC 연구실)
SunWoo, Myung-Hoon (아주대학교 전자공학부 SOC 연구실)
Abstract
This paper proposes an enhanced degree computationless modified Euclid's(E-DCME) algorithm and its architecture for Reed-Solomon decoders. The proposed E-DCME algorithm has shorter critical path delay that is $T_{mult}+T_{add}+T_{mux}$ compared with the existing modified Euclid's algorithm and the degree computationless modified Euclid's(DCME) algorithm since it uses new initial conditions. The proposed E-DCME architecture employing a systolic array requires only 2t-1 clock cycles to solve the key equation without initial latency. In addition, the E-DCME architecture consisting of 3t basic cells has regularity and scalability since it uses only one processing element. The E-DCME architecture using the $0.18{\mu}m$ Samsung standard cell library consists of 18,000 gates.
Keywords
Reed-Solomon; Key equation; Modified Euclid's algorithm;
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