Title :
Upper bound on the periodic autocorrelation of unified complex Hadamard transforms sequences
Author :
Lin, Zinan ; Rahardja, Susanto ; Wee, Ser
Author_Institution :
Dept. of Electr. Eng., Polytech. Univ., Brooklyn, NY, USA
Abstract :
The periodic autocorrelation (PAC) properties of a family of orthogonal sequences, the unified complex Hadamard transforms (UCHTs), are analyzed in this paper. The family is divided into a few groups in accordance to different characteristics of the sequences. Different upper bounds on the out-of-phase PAC are found for each group. The performance of the UCHTs sequences is compared with the Walsh-Hadamard sequences. It is shown that some UCHTs sequences provide better upper bound on the out-of-phase PAC
Keywords :
Hadamard transforms; correlation methods; sequences; Walsh-Hadamard sequences; asynchronous DS-SSMA systems; orthogonal sequences; out-of-phase periodic autocorrelation; unified complex Hadamard transform sequences; upper bound; Autocorrelation; Discrete transforms; Mathematics; Signal analysis; Signal processing; Upper bound;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.935931
