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首页> 外文期刊>Procedia Computer Science >Design of High Speed Carry Select Adder using Modified Parallel Prefix Adder
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Design of High Speed Carry Select Adder using Modified Parallel Prefix Adder

机译:使用修改的并行前缀加法器设计高速携带选择加法器

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We have proposed a modified Carry Select Adder (CSLA) structure which uses a parallel prefix structure with Binary to Excess – 1 converter (BEC). The proposed adder has been compared with Conventional, BEC, Brent – Kung (BK), Ladner – Fischer (LF) and Kogge – Stone (KS) based CSLA in terms of area, power consumption and performance. The proposed CSLA shows a significant decrease in the area and power compared to KS based CSLA. Particularly, the proposed CSLA structure exhibit significant improvement in speed by 54.41%, 7.95%, 7.82% to Conventional CSLA, 65.75%, 24.65%, 21.61% to BEC-CSLA, 50.79%, 13.83%, 9.30% to BK-CSLA, 43.12%, 8.99%, 5.35% to LF-CSLA, 44.64%, 10.50%, 6.30% to KS-CSLA for 4 bit, 8 bit and 16 bit respectively. All the CSLA structures are designed using Verilog HDL, simulations and synthesis have been performed in Cadence tool using 0.18 μm CMOS technology.
机译:我们提出了一种修改的携带选择加法器(CSLA)结构,该结构使用并行前缀结构与二进制到过量转换器(BEC)。在面积,功耗和性能方面,拟议的加法器已与常规,BEC,BEND-KUNG(BK),梯子 - 费氏(LF)和Kogge - Stone(KS)的CSLA进行比较。与基于KS的CSLA相比,所提出的CSLA显示该区域和功率的显着降低。特别是,所提出的CSLA结构对常规CSLA的速度显着提高54.41%,7.95%,7.82%,65.75%,24.65%,21.61%至BEC-CSLA,50.79%,13.83%,9.30%至BK-CSLA, 44.12%,8.95%,5.95%,5.35%,44.64%,10.50%,6.30%至Ks-CSLA分别为4位,8位和16位。所有CSLA结构都是使用Verilog HDL设计的,使用0.18μmCMOS技术在Cadence工具中进行了模拟和合成。

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