Contents

A Survey of Base Sequences, Disjoint Complementary Sequences and \(OD(4t;t, t, t,t)\)

Gavin Cohen1, David Rubie1, Jennifer Seberry1, Christos Koukouvinost2, Stratis Kouniast2, Mieko Yamada3
1Department of Computer Science University College The University of New South Wales Australian Defence Force Academy Canberra, A.C.T. 2600 Australia
2Department of Mathematics University of Thessaloniki Thessaloniki 54006 Greece
3Department of Mathematics Tokyo Woman’s Christian University Zempukuji, Suginami-Ku, Tokyo 167 Japan

Abstract

We survey the existence of base sequences, that is, four sequences of lengths \(m+p, m+p, m, m, p\) odd with zero auto-correlation function, which can be used with Yang numbers and four disjoint complementary sequences (and matrices) with zero non-periodic (periodic) auto-correlation function to form longer sequences. We survey their application to make orthogonal designs \(OD(4t; t, t, t, t)\). We give the method of construction of \(OD(4t; t, t, t, t)\) for \(t = 1, 3, \ldots, 41, 45, \ldots, 65, 67\), \(69, 75, 77, 81, 85, 87, 91, 93, 95, 99, 101, 105\), \(111, 115, 117, 119, 123, 125, 129, 133, 141, \ldots, 147, 153\), \(155, 159, 161, 165, 169, 171, 175, 177, 183, 185, 189, 195, 201, 203, 205, 209\).