High-performance MC-CDMA via carrier interferometry codes

被引：104
|
作者：
Natarajan, B [1 ]
Nassar, CR
Shattil, S
Michelini, M
Wu, ZQ
机构：
[1] Colorado State Univ, Dept Elect & Comp Engn, Ft Collins, CO 80523 USA
[2] Idris Commun, Boulder, CO 80303 USA
[3] Univ Florence, Dept Elect Engn, I-50139 Florence, Italy
来源：
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2001年 / 50卷 / 06期
关键词：
carrier interferometry; complex sequences; frequency diversity; multicarrier code division multiple access (MC-CDMA);
D O I：
10.1109/25.966567
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper introduces the principles of interferometry to multicarrier code division multiple access (MC-CDMA.). Specifically, we propose the use of MC-CDMA with novel carrier interferometry (CI) complex spreading codes. The CI/MC-CDMA method, applied to mobile wireless communication systems, offers enhanced performance and flexibility relative to MC-CDMA with conventional spreading codes. Specifically, assuming a frequency selective Rayleigh-fading channel, CI/MC-CDMAs performance matches that of orthogonal MC-CDMA using Hadamard-Walsh codes up to the MC-CDMA N user limit; and, CI MLC-CDMA provides the added flexibility of going beyond N users, adding up to N - 1 additional users with pseudo orthogonal positioning. When compared to MC-CDMA schemes capable of supporting greater than N users, CI/MC-CDMAs performance exceeds that of MC-CDMA. Additionally, this new system is analyzed in the presence of phase jitters and frequency offsets and is shown to be robust to both cases.
引用
收藏
页码：1344 / 1353
页数：10
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