8-Bit NCL Asynchronous Multiplier based on Radix-4 Booth Algorithm

Abstract

Multiplier is one of the key modules in signal processing circuit and processor, and its robustness is especially important in the complex environment. Due to the lack of robustness of single-rail logic, a Null Convention Logic (NCL) Multiplier based on the Radix-4 Booth 8-bit fast parallel structure is proposed in this paper. The Radix-4 Booth algorithm reduces the number of partial products to lower the computing time, and the “sign generate” algorithm simplifies sign extension bitcomputation. In order to demonstrate the effectiveness of the proposed hardware implementation scheme, we implement an improved 8-bit NCL multiplier on vivado platform, the speed of which is 14% higher than that of the traditional Wallace NCL 8bit multiplier.