On the lower bound to the VLSI complexity of number conversion from weighted to residue representation

A lower bound AT²=Ω(n² ) for the conversion from positional to residue representation is derived according to VLSI complexity theory, and existing solutions for the same problem are briefly reviewed in the light of such a bound. A VLSI system is proposed, one that operates according to a pipeline scheme and works asymptotically emulating an optimal structure, independently of residue number system parameters. This solution has been applied to a design of specific size (64-b input stream), and it has been found that a single CMOS custom chip can implement the design with a throughput of one residue representation every 30-40 ns