Issue No. 09 - September (1970 vol. 19)

ISSN: 0018-9340

pp: 850-851

K.W. Henderson , Stanford Linear Accelerator Center1 Stanford University

ABSTRACT

The matrix form of the Walsh functions as defined in the above-mentioned short note [1] can be generated by the modulo-2 product of two generating matrices: the natural binary code, and the transpose of the bit-reversed form of the first. As a result, the coefficients of the Walsh transform occur in bit-reversed order. By simply reordering the Walsh functions themselves to correspond to generation by the product of two such code matrices, neither or both in bit-reversed form, the Walsh coefficients occur in their natural order.

INDEX TERMS

Code matrix, Walsh-Fourier transform, Walsh functions, Walsh matrix.

CITATION

K.W. Henderson, "Comment on "Computation of the Fast Walsh-Fourier Transform"",

*IEEE Transactions on Computers*, vol. 19, no. , pp. 850-851, September 1970, doi:10.1109/T-C.1970.223054