Hybrid Han-Carlson adder

Sudhakar, S.; Chidambaram, Kumar P.; Swartzlander, Earl E.

doi:10.1109/mwscas.2012.6292146

Cited by 29 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other topologies that resemble Ultra-Fast Adders are available [13], but they require more space and power to operate. Several writers have also covered the hybrid structures [14]. A hybrid adder is a mixture of two or more prefix adders; if the combination is of the same kind, it is referred to as a homogeneous hybrid adder otherwise it is heterogeneous hybrid adder.…”

Section: Literature Overviewmentioning

confidence: 99%

A Novel High Computing Power Efficient VLSI Architectures of Three Operand Binary Adders

KavithaShravan,

Marri,

Saidulu

et al. 2023

IJEAT

View full text Add to dashboard Cite

Directly or indirectly adders are the basic elements in almost all digital circuits, three operand adders are the basic building blocks in LCG (Linear congruential generator) based pseudo-random bit generators. Elementary adders are fast, area and power efficient for small bit sizes. Carry save adder computes the addition in O(n) time complexity, due to its ripple carry stage. Parallel prefix adders such as Han-Carlson compute the addition in O(log(n)) time complexity but at the cost of additional circuitry. Hence new high-speed power-efficient adder architecture is proposed which uses four stages to compute the addition, which consumes less power, and the adder delay decreases to O(n/2). Even though it is not much faster than the High-speed Area efficient VLSI architecture of three operand adders (HSAT3), it computes the addition by utilizing less power. The proposed architecture is implemented using Verilog HDL in Xilinx 14.7 design environment and it is evident that this adder architecture is 2 times faster than the carry save adder and 1, 1.5, 1.75 times faster than the hybrid adder structure for 32, 64, 128 bits respectively. Also, power utilization is 1.95 times lesser than HSAT3, 1.94 times lesser than the Han-Carlson adder, and achieves the lowest PDP than the existing three operand techniques.

show abstract

Section: Literature Overviewmentioning

confidence: 99%