Design of the Normalization Unit for a Low-Power and Area-Efficient Turbo Decoders 


Vol. 28,  No. 11, pp. 1052-1061, Nov.  2003


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  Abstract

This paper proposes a novel normalization scheme in the state metric calculation unit for the Block-wise MAP Turbo decoder. The proposed scheme subtracts one of four metrics from the state metrics in a trellis stage and shifts, if necessary, those metrics for normalization. The proposed architecture can reduce power consumption and memory requirement by reducing the number of the state metrics by one in a trellis stage in the Block-wise MAP decoder which requires an intensive state metric calculations.
Simulation results show that dynamic power has been reduced by 17.9% and area has been reduced by 6.6% in the Turbo decoder employing the proposed normalization scheme, when compared to the conventional Block-wise MAP Turbo decoders.

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  Cite this article

[IEEE Style]

J. Moon, S. Kim, S. Hwang, "Design of the Normalization Unit for a Low-Power and Area-Efficient Turbo Decoders," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 11, pp. 1052-1061, 2003. DOI: .

[ACM Style]

Je-Woo Moon, Sik Kim, and Sun-Young Hwang. 2003. Design of the Normalization Unit for a Low-Power and Area-Efficient Turbo Decoders. The Journal of Korean Institute of Communications and Information Sciences, 28, 11, (2003), 1052-1061. DOI: .

[KICS Style]

Je-Woo Moon, Sik Kim, Sun-Young Hwang, "Design of the Normalization Unit for a Low-Power and Area-Efficient Turbo Decoders," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 11, pp. 1052-1061, 11. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880