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IEICE TRANSACTIONS on Fundamentals

Doppler Diversity in MC-CDMA Systems with T-ZCZ Sequences for Doppler Spread Cancelation

Xiaoming TAO, Chao ZHANG, Jianhua LU

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Summary :

Doppler diversity has been proven effective to combat time variation caused by Doppler spread in single carrier systems. However, it is not efficient to directly apply Doppler diversity into Multi-Carrier Code Division Multiple Access (MC-CDMA) systems because Inter-Carrier-Interference (ICI) increases with the artificial frequency shifts in diversity branches. In this paper, a novel Doppler diversity scheme in MC-CDMA with Three Zero Correlation Zones (T-ZCZ) sequences is proposed to further improve the performance of Doppler diversity. Particularly, zero correlation zones are employed in frequency domain for ICI cancelation caused by Doppler spread, which confirms the validity of the contribution to the wideband wireless communications in high speed mobile environment.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.11 pp.2361-2368
Publication Date
2007/11/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e90-a.11.2361
Type of Manuscript
Special Section PAPER (Special Section on Wideband Systems)
Category
CDMA

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