Hd. Luke, BTP TRANSFORM AND PERFECT SEQUENCES WITH SMALL PHASE ALPHABET, IEEE transactions on aerospace and electronic systems, 32(1), 1996, pp. 497-499
The binary to P-phase (BTP) transform maps an odd-periodic sequence in
to an even periodic sequence and vice versa so that the magnitudes of
their correlation functions remain unchanged, This BTP transform is us
ed to construct perfect, almost polyphase sequences with small phase a
lphabets.