Low-power modified shift-add multiplier design using parallel prefix adder

Rohan Pinto, Kumara Shama

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Multipliers are the building blocks of every digital signal processor (DSP). The performance of any digital system is dependent on the adder design and to a large extent on the multiplier block. Area and power dissipation are the major considerations in a multiplier design due to its complexity. In this paper, an efficient multiplier "bypass zero feed multiplicand directly," based on shift-add multiplication, has been proposed for low-power application. As the shift-add multiplication is a repetitive process of addition, the implementation time of an adder is reduced by using the proposed parallel prefix adders designed based on revised Ling equations. The proposed 8-bit, 16-bit and 32-bit multipliers are implemented using 180-nm and 90-nm CMOS technologies. Simulation results reveal that the proposed multiplier is fast and lowers the power by 35% predominantly for a 32-bit multiplier.

Original languageEnglish
Article number1950019
JournalJournal of Circuits, Systems and Computers
Issue number2
Publication statusPublished - 01-02-2019

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering


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