Performance of an Improved MC-CDMA System Based on DT-OCWDM and Quasi-Orthogonal Matrix

You Wu; Shuang Wang; You Sai Zhang

doi:10.4028/www.scientific.net/AMM.321-324.2897

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 321-324Performance of an Improved MC-CDMA System Based on...

Performance of an Improved MC-CDMA System Based on DT-OCWDM and Quasi-Orthogonal Matrix

Abstract:

In this paper, we propose a new improved MC-CDMA system which combines spreading codes from Quasi-Orthogonal Matrix with Orthogonal Complex Wavelet Division Multiplexing (OCWDM). The system is implemented by complex wavelet filters which are able to lower computational complexity and increase flexibility. Novel spreading codes from Quasi-Orthogonal Matrix can be expanded randomly. It can increase user number hugely in system. Improved MC-CDMA named OCWDM-CDMA has much higher frequency spectrum efficiency and high data rate than conventional MC-CDMA. The system also has better BER performance in Gaussian channel than conventional system for much more users.

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Periodical:

Applied Mechanics and Materials (Volumes 321-324)

Pages:

2897-2901

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.321-324.2897

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Online since:

June 2013

Authors:

You Wu, Shuang Wang, You Sai Zhang

Keywords:

DT-CWT, OCWDM-CDMA, Quasi-Orthogonal Matrix

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