Improving the Operating Efficiency of a Multibit Binary Parallel-Prefix Adder

2021 ◽  
Vol 50 (7) ◽  
pp. 491-498
Author(s):  
A. N. Yakunin ◽  
Aung Myo San ◽  
Han Myo Htun
Author(s):  
K.R. Shankarkumar ◽  
Gokul Kumar

: Filtering is an important step in the field of image processing to suppress the required parts or to remove any artifacts present in it. There are different types of filters like low pass, high pass, Band pass, IIR, FIR and adaptive filtering etc.., in these filters adaptive filters is an important filter because it is used to remove the noisy signal and images. Least Mean Square filter is a type of an adaptive filtering which is used to remove the noises present in the medical images. The working of LMS is based on the minimization of the difference between the error images using a closed loop feedback. Therefore presented technique called as Q-CSKA. Here the CSKA performs its operation in stages which is based on the nucleus stage. In the traditional CSKA the nucleus stage is depend on the parallel prefix adder in this work it is replaced by the QCA adder. The QCA adder utilizes the less area compared to PPA and it can be realized in Nanometer range also. For multiplexers, And OR Invert, OR and Invert logic is used to reduce the area and delay. Due to these advantages of the QCA, AOI-OAI logic the proposed method outperformed the LMS implementation in area, power, and accuracy and delay, this based five type image noise of medical pictures related to the best technique is out comes. It helps to medicinal practitioner to resolve the symptoms of patient with ease.


2013 ◽  
Vol 42 (7) ◽  
pp. 731-743 ◽  
Author(s):  
Stefania Perri ◽  
Marco Lanuzza ◽  
Pasquale Corsonello

2019 ◽  
Vol 8 (3) ◽  
pp. 5039-5043

Arithmetic and Logic Unit (ALU) is the important module in any digital system utilized in the current world applications. Adder plays major role in the construction of any ALU. Multipliers can also be designed with the help of continuous addition. The efficient design of adders is very much needed for the efficient ALU design. Parallel prefix adder has been chosen in this research because of its fastest computation and efficiency. Kogge Stone, Sklansky, Ladner Fischer, Brunt Kung, Han-Carlson and Knowles are the adders discussed in this research. Further, the combinations of any two adders have also been tested for the best efficiency in terms of power consumption and delay utilisation. From the many combinations, it is found that the proposed combination of Bruntkung and SKlansky (BSK) adder performs excellent with the power consumption of 25011.22 nW and delay of 1243 pS.


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