Reverse converter design via parallel prefix adders; novel components, methodology, and implementations
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This document discusses a novel design for residue number system reverse converters using parallel-prefix adders. It analyzes implementing reverse converters with regular and modular parallel-prefix adders, finding significant delay reduction but higher power consumption. To address this, it presents new hybrid parallel-prefix adder components and a methodology for designing reverse converters using different prefix adders to better trade off delay and power consumption for the target application.
Reverse converter design via parallel prefix adders; novel components, methodology, and implementations
- 1. REVERSE CONVERTER DESIGN VIA PARALLEL-PREFIX ADDERS: NOVEL COMPONENTS, METHODOLOGY, AND IMPLEMENTATIONS ABSTRACT: In this brief, the implementation of residue number system reverse converters based on well-known regular and modular parallelprefix adders is analyzed. The VLSI implementation results show asignificant delay reduction and area × time2 improvements, all this at the cost of higher power consumption, which is the main reason preventing the use of parallel- prefix adders to achieve high-speed reverse converters in nowadays systems. Hence, to solve the high power consumption problem, novel specific hybrid parallel-prefix-based adder components that provide better tradeoff between delay and power consumption are herein presented to design reverse converters. A methodology is also described to design reverse converters based on different kinds of prefixadders. This methodology helps the designer to adjust the performance of the reverse converter based on the target application and existing constraints.