An Optimal Design for Han Carlson Parallel Prefix Adder

Han-Carlson parallel-prefix adder is a combination of Kogge-Stone adder and Brent-Kung adder's advantages.This paper proposes a method of optimization based on Han-Carlson parallel-prefix topology. Sacrificing part of the delay and reducing the use of area to reduce power consumption.Comparing with unoptimized Han-Carlson parallel-prefix adder and mixed adders based on Han-Carlson parallel-prefix adder, the proposed method is succeed to reduce the using area and power.