Conventional adders with fine grained Redundancy Injection

Many digital systems benefit implicitly or explicitly from redundant representations to improve their performance. In this work we present a Limited Selective Redundancy Injection (LSRI) method to improve arithmetic unit performance. Our results show that LSRI with Conventional Input Redundant Output (CI-RO) adder improves Ripple Carry Adder (RCA) latency and Power-Delay-Area-Product (PDAP) by about 50% for large operand size with less than 1% area overhead and slight improvement in the power consumption.