Title :
A low-complexity Reed-Solomon decoder for PON
Author :
Xie, Jun ; Tu, Xiaodong
Author_Institution :
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
In this paper, a low-complexity Reed-Solomon (RS) (255,239) decoder architecture using a novel half folding Modified Euclidean (ME) algorithm is proposed for PON system. A new key equation solver using ME algorithm is proposed. The operation cycles is reduced to less than 127 by using the zero leading coefficients detector for polynomial. The time multiplexing and resource sharing schemes can be used in the recursive ME algorithm to reduce the logic gate count. The new key equation solver can be shared by two decoder macro. The resource utilization is reduced about 35% comparing to the conventional method.
Keywords :
Reed-Solomon codes; computational complexity; decoding; optical fibre networks; PON system; logic gate count; low-complexity Reed-Solomon decoder; modified euclidean algorithm; passive optical networks; resource sharing schemes; resource utilization; time multiplexing; zero leading coefficient detector; Computer architecture; Detectors; Equations; Forward error correction; Hardware; Iterative decoding; Passive optical networks; Polynomials; Reed-Solomon codes; Shift registers;
Conference_Titel :
Communications, Circuits and Systems, 2008. ICCCAS 2008. International Conference on
Conference_Location :
Fujian
Print_ISBN :
978-1-4244-2063-6
Electronic_ISBN :
978-1-4244-2064-3
DOI :
10.1109/ICCCAS.2008.4657844
