Performance Improvement in Conventional 4-bit Static CMOS Carry Look-Ahead Adder by Modifying Carry-Generate and Propagate Terms

Dipto, Md. Ashik Zafar; Sorwar, Afran; Sojib, Elias Ahammad; Rangon, Md. Mostak Tahmid

doi:10.1109/icccnt49239.2020.9225667

Cited by 3 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several 4‐bit CLA cells based on modified circuits for

{G}_i

and

{P}_i

terms are presented in Refs. 22–25. In these 4‐bit CLA cells, the CLA blocks along with their Boolean equations are identical to the static CMOS logic based conventional 4‐bit CLA.…”

Section: Literature Review Of Existing 4‐bit Clamentioning

confidence: 99%

See 1 more Smart Citation

Wide word‐length carry‐select adder design using ripple carry and carry look‐ahead method based hybrid 4‐bit carry generator

Hasan

Chowdhury

Faruqe

et al. 2023

Engineering Reports

View full text Add to dashboard Cite

This research aims to fill up the research gap in energy‐efficient transistor‐level wide word‐length carry circuit generator by using ripple carry (RC) and carry look‐ahead (CLA) method‐based hybrid 4‐bit carry generation process for wide word‐length carry‐select adder (CSLA). Compared to the existing 4‐bit CLA architectures, the proposed 4‐bit RC‐CLA method‐based hybrid 4‐bit carry generator showed performance improvement in terms of power and power delay product (PDP). Later, the 4‐bit carry architectures (existing and proposed) were used as a base to implement 16‐bit carry select adder (CSA) in order to investigate and compare the effect of using the proposed hybrid RC‐CLA based 4‐bit carry generator in large structures. Unlike 4‐bit operation, the proposed design displayed the best performance in power and PDP for 16‐bit CSA extension, which proves its effectiveness in wide word‐length adder structures.

show abstract

“…Several 4‐bit CLA cells based on modified circuits for

{G}_i

and

{P}_i

terms are presented in Refs. 22–25. In these 4‐bit CLA cells, the CLA blocks along with their Boolean equations are identical to the static CMOS logic based conventional 4‐bit CLA.…”

Section: Literature Review Of Existing 4‐bit Clamentioning

confidence: 99%

“…Rather than using static CMOS logic‐based circuits, 4‐bit CLA cells in Refs. 22–25 used hybrid logic‐based circuits. By using this approach, the number of transistors could be reduced and several performance parameters could be improved.…”

Section: Literature Review Of Existing 4‐bit Clamentioning

confidence: 99%