Don Coppersmith, David Gamarnik, et al.
Random Structures and Algorithms
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, David Gamarnik, et al.
Random Structures and Algorithms
Don Coppersmith
Proceedings of the American Mathematical Society
Ephraim Feig
IEEE Transactions on Magnetics
Alok Aggarwal, Don Coppersmith, et al.
SIAM Journal on Computing