This paper presents a low-complexity parallel Reed-Solomon (RS) (255,239) decoder architecture using a novel
pipelined variable stages recursive Modified Euclidean (ME) algorithm for optical communication. The pipelined four-parallel
syndrome generator is proposed. The time multiplexing and resource sharing schemes are used in the novel
recursive ME algorithm to reduce the logic gate count. The new key equation solver can be shared by two decoder macro.
A new Chien search cell which doesn't need initialization is proposed in the paper. The proposed decoder can be used
for 2.5Gb/s data rates device. The decoder is implemented in Altera' Stratixll device. The resource utilization is reduced
about 40% comparing to the conventional method.
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