Design of low power and high speed modified carry select adder for 16 bit Vedic Multiplier

Author(s):  
Y Bhavani Prasad ◽  
Ganesh Chokkakula ◽  
P Srikanth Reddy ◽  
N. R. Samhitha
2021 ◽  
pp. 517-530
Author(s):  
Kummetha Deepthi ◽  
Pratheeksha Bhaskar ◽  
M. Priyanka ◽  
B. V. Sonika ◽  
B. N. Shashikala

2018 ◽  
Vol 7 (2.7) ◽  
pp. 733
Author(s):  
C Priyanka ◽  
N Manoj Kumar ◽  
L Sai Priya ◽  
B Vaishnavi ◽  
M Rama Krishna

Convolution is having extensive area of application in Digital Signal Processing. Convolution supports to evaluate the output of a system with arbitrary input, with information of impulse response of the system.  Linear systems features are totally stated by the systems impulse response, as ruled by the mathematics of convolution. Primary necessity of any application to work fast is that rise in the speed of their basic building block. Multiplier, adder is said to be the important building blocks in the process of convolution. As these blocks consumes plentiful time to obtain the response of the system.  Several methods are designed to progress the speed of the Multiplier and adder, among all GDI (Gate Diffusion Input) is under emphasis because of faster working and low power consumption. In this paper GDI based convolution is implemented using Vedic multiplier and adder in T-SPICE Software which increases the speed and consumes less power compared to CMOS technology. 


2019 ◽  
Vol 17 (10) ◽  
pp. 826-831
Author(s):  
Vandana Shukla ◽  
O. P. Singh ◽  
G. R. Mishra ◽  
R. K. Tiwari

Low power high speed calculating devices are foremost requirement of this era. Moreover, multiplication is considered as the most vital part of any calculating system. Multiplication process is generally considered as the speed limiting process as it requires more time as compared to other basic arithmetic calculations. So, here we focus on multiplication calculation using vedic method. Moreover, Reversible realization of any digital circuit improves the performance of the system by reducing the power loss from it. Here, the concept of vedic multiplication and Reversible approach are combined to propose a 4-bit multiplier circuit with optimized performance parameters. Proposed design is also analyzed and compared with existing designs. This approach may be employed to propose other low loss devices.


2020 ◽  
Vol 18 (03) ◽  
pp. 2050002
Author(s):  
Meysam Rashno ◽  
Majid Haghparast ◽  
Mohammad Mosleh

In recent years, there has been an increasing tendency towards designing circuits based on reversible logic, and has received much attention because of preventing internal power dissipation. In digital computing systems, multiplier circuits are one of the most fundamental and practical circuits used in the development of a wide range of hardware such as arithmetic circuits and Arithmetic Logic Unit (ALU). Vedic multiplier, which is based on Urdhva Tiryakbhayam (UT) algorithm, has many applications in circuit designing because of its high speed in performing multiplication compared to other multipliers. In Vedic multipliers, partial products are obtained through vertical and cross multiplication. In this paper, we propose four [Formula: see text] reversible Vedic multiplier blocks and use each one of them in its right place. Then, we propose a [Formula: see text] reversible Vedic multiplier using the four aforementioned multipliers. We prove that our design leads to better results in terms of quantum cost, number of constant inputs and number of garbage outputs, compared to the previous ones. We also expand our proposed design to [Formula: see text] multipliers which enable us to develop our proposed design in every dimension. Moreover, we propose a formula in order to calculate the quantum cost of our proposed [Formula: see text] reversible Vedic multiplier, which allows us to calculate the quantum cost even before designing the multiplier.


2020 ◽  
pp. 87-90
Author(s):  
Anitha P ◽  
Dhivya devi R ◽  
Siddharthraju K ◽  
Boobathi S

VLSI is the relating to more than one branch of science of utilizing the advanced semiconductor technology to develop various functional units of computational System. The most complex function carried out by ALU is multiplication. Digital multiplication is most extensively used operation particularly in signal processing, System designer has to sacrifice silicon die area in order to make the multiplication as soon as possible. In this paper, various multiplier architectures are simulated and compared with high speed and low power 8x8 Vedic multiplier (Urdhva Triyagbhayam) which uses modified carry select adder for partial product reduction. The design is implementation and simulation has been done by Microwind tool with 90 nm technology. The simulation result shows 58% of power reduction, 65% of delay reduction and 44% of area reduction has been attained.


Recently, low-power consuming devices are gaining demand due to excessive use and requirement of hand-held & portable electronic gadgets. The quest for designing better options to lower the power consumption of a device is in high-swing. The paper proposes two 32 x 32 – bit multipliers. The first design is based only on the Urdhava Tiryakbhyam Sutra of Vedic Mathematics. The use of this sutra has created a multiplier with higher throughput and lesser power utilization than conventional 32 x 32 – bit multipliers. The second design incorporates the reversible logic into the first design, which further reduces the power consumption of the system. Thus bringing together Vedic sutra for multiplication and reversible gates has led to the development of a Reversible Vedic Multiplier which has both the advantages of high-speed and low-power consumption.


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