| 声码器中一种四级可重构ALU的研究与设计 |
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| 引用本文： | 荆涛,王沁.声码器中一种四级可重构ALU的研究与设计[J].小型微型计算机系统,2008,29(12). |
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| 作者姓名： | 荆涛 王沁 |
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| 作者单位： | 北京科技大学,信息工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金
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| 摘 要： | 在面向语音编解码算法实现的高性能声码器设计中,支持可变长VLIW指令集的ALU单元是实现其设计目标的重要环节.本文提出一种四级可重构的ALU设计,以前缀算法加法器为核心,并通过操作数和资源的重构,能在单周期内完成81种复合算术逻辑运算,同时将其控制编码压缩了58.93%以适应指令集的宽度约束,高效实现了算法中潜在的高并行性,很好的满足了运算密集型的算法应用需求.
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| 关 键 词： | 声码器 算术逻辑运算单元 可重构 并行性 |
Research and Design of a Four-stage Reconfigurable ALU in Vocoder |
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| JING Tao,WANG Qin.Research and Design of a Four-stage Reconfigurable ALU in Vocoder[J].Mini-micro Systems,2008,29(12). |
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| Authors: | JING Tao WANG Qin |
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| Affiliation: | JING Tao,WANG Qin(School of Information Engineering,University of Science , Technology Beijing,Beijing 100083,China) |
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| Abstract: | In the design of high performance vocoder based on speech compressing algorithms,the ALU module is essential for its design goal. This paper proposes the design techniques of a four-stage reconfigurable ALU based on the 8-bit adders using prefix algorithm. The ALU can manipulate 81 kinds of compound arithmetic and logic operations in a single cycle via operands and resources reconfiguration, and by using coding compression, its control codes can be reduced by 58.93%, which meets the variable length VLIW ins... |
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| Keywords: | vocoder ALU reconfigurable parallelism |
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