2D orthogonal spreading codes for multicarrier DS-CDMA systems

被引：0
|
作者：
Yang, CM [1 ]
Lin, PH
Yang, GC
Kwong, WC
机构：
[1] Natl Chung Hsing Univ, Dept Elect Engn, Taichung 40227, Taiwan
[2] Hofstra Univ, Dept Engn, Hempstead, NY 11549 USA
来源：
2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5: NEW FRONTIERS IN TELECOMMUNICATIONS | 2003年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents two new constructions of two-dimensional (213) spreading codes, here designated as 2D orthogonal variable spreading factor (OVSF) codes, for multicarrier direct-sequence code-division multiple-access (MC/DS-CDMA) systems. Orthogonality of these spreading codes is employed to improve the bandwidth efficiency and interference-rejection capability of the DS-CDMA systems. The 2D OVSF codes are constructed by generalizing one-dimensional (113) OVSF codes and they possess ideal correlation properties. As illustrated in this paper, these 2D OVSF codes preserve the orthogonality of different spreading factors in an OVSF code tree, supporting multimedia services with a variety of data rates.
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页码：3277 / 3281
页数：5
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