Almost perfect sequences with θ=2

• Main Authors: Leung, Ka Hin, Ling, San, Ma, Siu Lun, Tay, Kian Boon
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Mathematics
• Online Access: https://hdl.handle.net/10356/95797; http://hdl.handle.net/10220/9829
• Institution: Nanyang Technological University

Almost perfect sequences with θ=2 are studied in this paper. Recently Arasu, Ma and Voss [1] studied such sequences and they could only obtain sequences having periods 8, 12 and 28. In this paper, we prove that no other almost perfect sequences exist for the case θ=2.