Design of approximate reverse carry select adder using RCPA

Rajasekhar Turaka; Koteswara Rao Bonagiri; Talla Srinivasa Rao; Gundugonti Kishore Kumar; Sudharsan Jayabalan; V. Bharath Sreenivasulu; Asisa Kumar Panigrahy; M. Durga Prakash

doi:10.1080/21681724.2022.2062791

Design of approximate reverse carry select adder using RCPA

Rajasekhar Turaka
, Koteswara Rao Bonagiri
, Talla Srinivasa Rao
, Gundugonti Kishore Kumar
, Sudharsan Jayabalan
, V. Bharath Sreenivasulu
, Asisa Kumar Panigrahy
, M. Durga Prakash^*

^*Corresponding author for this work

Department of Electronics and Communication Engineering, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

An approximate carry select adder (CSLA) with reverse carry propagation (RCSLA) is showed in this work. This RCSLA was designed with reverse carry propagate full adder (RCPFA). In RCPFA structure, the carry signal propagates in the reverse direction that is from MSB part to LSB part, then the carry input has greater importance compared to the output carry. Three types of implementations were designed in RCPFA based on the design parameters. This method was applied to RCA & CSLA to design other types of approximate adders. These designs and simulations were done in CADENCE Software tool with 45 nm COMS technology. The design parameters of the three CSLA implementations with RCPFA are compared with the existing CSLA adders.

Original language	English
Pages (from-to)	146-156
Number of pages	11
Journal	International Journal of Electronics Letters
Volume	11
Issue number	2
DOIs	https://doi.org/10.1080/21681724.2022.2062791
Publication status	Published - 2023

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Computer Networks and Communications
Electrical and Electronic Engineering

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10.1080/21681724.2022.2062791

Cite this

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title = "Design of approximate reverse carry select adder using RCPA",

abstract = "An approximate carry select adder (CSLA) with reverse carry propagation (RCSLA) is showed in this work. This RCSLA was designed with reverse carry propagate full adder (RCPFA). In RCPFA structure, the carry signal propagates in the reverse direction that is from MSB part to LSB part, then the carry input has greater importance compared to the output carry. Three types of implementations were designed in RCPFA based on the design parameters. This method was applied to RCA \& CSLA to design other types of approximate adders. These designs and simulations were done in CADENCE Software tool with 45 nm COMS technology. The design parameters of the three CSLA implementations with RCPFA are compared with the existing CSLA adders.",

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doi = "10.1080/21681724.2022.2062791",

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AU - Turaka, Rajasekhar

AU - Bonagiri, Koteswara Rao

AU - Rao, Talla Srinivasa

AU - Kumar, Gundugonti Kishore

AU - Jayabalan, Sudharsan

AU - Sreenivasulu, V. Bharath

AU - Panigrahy, Asisa Kumar

AU - Prakash, M. Durga

PY - 2023

Y1 - 2023

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AB - An approximate carry select adder (CSLA) with reverse carry propagation (RCSLA) is showed in this work. This RCSLA was designed with reverse carry propagate full adder (RCPFA). In RCPFA structure, the carry signal propagates in the reverse direction that is from MSB part to LSB part, then the carry input has greater importance compared to the output carry. Three types of implementations were designed in RCPFA based on the design parameters. This method was applied to RCA & CSLA to design other types of approximate adders. These designs and simulations were done in CADENCE Software tool with 45 nm COMS technology. The design parameters of the three CSLA implementations with RCPFA are compared with the existing CSLA adders.

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Design of approximate reverse carry select adder using RCPA

Abstract

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