Title :
Maximum periodic correlation of pseudo-random sequences in CDMA
Author :
Stular, Mitja ; Tomazic, Saso
Author_Institution :
Fac. of Electr. Eng., Ljubljana Univ., Slovenia
Abstract :
The article presents the comparison of the Welch, modified Welch, Sarwate and Sidelnikov lower bounds on the correlation of CDMA codes. It is shown that the modified Welch bound is the best general bound known, while for codes whose symbols are roots of unity, the Sidelnikov bound is tighter. It appears likely that these bounds are nonoptimal for larger number of codes in a code set, and that there is still place for further improvements
Keywords :
binary sequences; code division multiple access; correlation theory; pseudonoise codes; CDMA codes; Sarwate bound; Sidelnikov bound; Welch bound; lower bounds; maximum periodic correlation; modified Welch bound; pseudo-random sequences; Autocorrelation; Equations; Frequency domain analysis; Frequency synchronization; Multiaccess communication;
Conference_Titel :
Electrotechnical Conference, 2000. MELECON 2000. 10th Mediterranean
Conference_Location :
Lemesos
Print_ISBN :
0-7803-6290-X
DOI :
10.1109/MELCON.2000.880455
