Don Coppersmith
Journal of Combinatorial Theory, Series A
A new algorithm for computing Hadamard transforms is presented. If n is a power of four, then the new algorithm uses ⅞ n logn multiply/adds to compute a Hadamard transform of length n. © 1994 IEEE
Don Coppersmith
Journal of Combinatorial Theory, Series A
Ephraim Feig
Journal of Algorithms
Don Coppersmith, Alan J. Hoffman
Linear Algebra and Its Applications
Louis Auslander, Ephraim Feig, et al.
IEEE Transactions on Acoustics, Speech, and Signal Processing