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一个面积优化的高速RS(255,239)译码器VLSI设计
引用本文:张静波,戴显,张鹤鸣,胡辉勇,贾大中.一个面积优化的高速RS(255,239)译码器VLSI设计[J].西安电子科技大学学报,2008,35(1):116-120.
作者姓名:张静波  戴显  张鹤鸣  胡辉勇  贾大中
作者单位:[1]西安电子科技大学微电子学院,陕西西安710071 [2]西安电子科技大学宽禁带半导体材料与器件教育部重点实验室,陕西西安710071
摘    要:基于改进的Euclid算法,提出了一种仅含两个折叠计算单元的结构,并用三级流水线结构整体实现以提高吞吐率.将常规有限域乘法器转化到复合域中实现,降低了芯片的复杂性和关键路径延迟.以RS(255,239)为例,基于TSMC 0.18标准单元库的译码器电路规模约为20 614门,在相同纠错能力下,该结构相比较于传统的并行脉动阵列结构,其硬件复杂度可减少60%左右.

关 键 词:RS码  流水线结构  Euclid算法  Verilog  HDL  超大规模集成电路  面积优化  译码器  VLSI  design  设计  硬件复杂度  脉动阵列结构  并行  比较  纠错能力  规模  电路  标准单元库  TSMC  路径延迟  芯片  复合域  转化  乘法器  有限域  吞吐率
文章编号:1001-2400(2008)01-0116-05
收稿时间:2007-08-03
修稿时间:2007年8月3日

Area-efficient high-speed VLSI design of the RS(255,239) decoder
ZHANG Jing-bo,DAI Xian-ying,ZHANG He-ming,HU Hui-yong,JIA Da-zhong.Area-efficient high-speed VLSI design of the RS(255,239) decoder[J].Journal of Xidian University,2008,35(1):116-120.
Authors:ZHANG Jing-bo  DAI Xian-ying  ZHANG He-ming  HU Hui-yong  JIA Da-zhong
Affiliation:(1. School of Microelectronic, Xidian Univ., Xi′an 710071, China; 2. Ministry of Education Key Lab. of Wide Band-Gap Semiconductor Materials and Devices, Xidian Univ., Xi′an 710071, China) ;
Abstract:Based on the modified Euclid's algorithm,a VLSI architecture is proposed,which only uses two folding calculating cells and three-stage pipeline processing architectures to improve its throughput.Also,a way is introduced to reduce the complexity and critical path delay of general finite multipliers by the transferring of field from the time domain to the composite domain.Based on the TSMC 0.18 standard cell library,the proposed RS decoder consists of about 20 614 gates for widely used RS(255,239) code,which reduces complexity by about 60% compared with an existing architecture with systolic arrays when having the same error correction ability.
Keywords:Reed-Solomon codes  pipeline architecture  Euclid algorithm  verilog HDL  VLSI
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