Issue No.12 - December (1974 vol.23)
Cyclic and dyadic shifts of a periodic sequence are illustrated on the H diagram. Fast Walsh-Hadamard transform of the shifted (both cyclic and dyadic) sequence is represented graphically on the H diagram. The shift-invariant properties of the power spectrum are derived from these operations.
Cyclic and dyadic shifts, fast Walsh-Hadamard transform, H diagram, power spectrum.
K.R. Rao, M.A. Narasimhan, N. Ahmed, "Cyclic and Dyadic Shifts, Walsh-Hadamard Transform, and the H Diagram", IEEE Transactions on Computers, vol.23, no. 12, pp. 1303-1306, December 1974, doi:10.1109/T-C.1974.223851