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Abstract

Approximate computing forms a design alternative that exploits the intrinsic error resilience of various applications and produces energy-efficient circuits with small accuracy loss. The approximate hybrid high radix encoding is generated in the partial products in signed multiplications that encode the most significant bits with the accurate radix-4 encoding and the least significant bits with an approximate higher radix encoding. The approximations are performed by rounding the high radix values to their nearest power of two. The approximate encoding is commonly used in signed multipliers although these techniques perform fast multiplications. The number of the partial products is reduced in the design. In radix-4 encoder the partial product tree is reduced and the number of radix increases. The MSBs of the multiplicand are encoded with the accurate radix-4 encoding, while its k LSBs are encoded with an approximate high radix-2k encoding, with k being a configuration parameter that adjusts the tradeoff between accuracy and energy consumption.

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How to Cite
V.Saravanan, & P.Susan Peac. (2019). Approximate hybrid high radix-4096 encoding for energy efficient inexact multipliers . International Journal of Intellectual Advancements and Research in Engineering Computations, 7(1), 288–295. Retrieved from https://ijiarec.com/ijiarec/article/view/987