Title :
Quasi-orthogonal sequences
Author :
Matsufuji, Shinya ; Takatsukasa, Kenji ; Watanabe, Yoshiaki ; Kuroyanagi, Noriyoshi ; Suehiro, Naoki
Author_Institution :
Dept. of Inf. Sci., Saga Univ., Japan
Abstract :
This paper discusses quasi-orthogonal sequences consisting of real elements, whose periodic out-of-phase autocorrelation functions take zero except for a shift corresponding to the half period. It is shown that they can be formalized by use of the Fourier transform. As a special case, binary quasi-orthogonal sequences are found until period 196 from a conjecture for their constructions
Keywords :
Fourier transforms; binary sequences; correlation theory; Fourier transform; binary quasi-orthogonal sequences; out-of-phase autocorrelation functions; periodic autocorrelation functions; Artificial intelligence; Autocorrelation; Binary sequences; Fourier transforms; Hardware; Information science; Spread spectrum communication;
Conference_Titel :
Wireless Communications, 2001. (SPAWC '01). 2001 IEEE Third Workshop on Signal Processing Advances in
Conference_Location :
Taiwan
Print_ISBN :
0-7803-6720-0
DOI :
10.1109/SPAWC.2001.923896
