Title :
Optimal spreading sequence design based on PR-QMF theory
Author :
Shi, Qinghua ; Cheng, Shixin
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
fDate :
3/18/1999 12:00:00 AM
Abstract :
Based on filter bank theory, a new scheme for spreading sequence generation is proposed for direct sequence code division multiple access (DS-CDMA) systems. It is shown that optimal spreading sequences produce much less multiple access interference (MAI) than Gold codes with comparable lengths
Keywords :
code division multiple access; filtering theory; interference (signal); quadrature mirror filters; spread spectrum communication; PR-QMF theory; direct sequence code division multiple access; filter bank theory; mobile communications; multiple access interference; optimal spreading sequence design;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990328
