The arithmetic cube

  • Authors:
  • R. M. Owens;M. J. Irwin

  • Affiliations:
  • The Pennsylvania State Univ., University Park, PA;The Pennsylvania State Univ., University Park, PA

  • Venue:
  • IEEE Transactions on Computers
  • Year:
  • 1987

Quantified Score

Hi-index 14.98

Visualization

Abstract

We present the design of a VLSI processor which can be programmed to compute the discrete Fourier transform of a sequence of n points and which achieves the theoretical AT2 lower bound of 驴(n2) for n 驴 n where n is an infinite set. Furthermore, since the set n is also sufficiently dense, the processor achieves for any n the theoretical AT2 lower bound of 驴(n2) for computing the cyclic convolution of two sequences of n points. Uniquely, our design achieves this bound without the use of data shuffling or long wires. Also, the processor uses only approximately 驴n multipliers, while many other designs need 驴(n) multipliers to achieve the same time bounds. Since multipliers are usually much larger than adders, the processor presented in this paper should be smaller. The design also features layout regularity, minimal control, and nearest neighbor interconnect of arithmetic cells of a few different types. These characteristics make it an ideal candidate for VLSI implementation.