Performance Analysis of Multirate MC-CDMA Systems using OVSF Code Grouping 


Vol. 31,  No. 12, pp. 1135-1142, Dec.  2006


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  Abstract

This article presents a new asynchronous MC-CDMA system to implement multiple data rate communications. In a W-CDMA downlink, the OVSF code is used for spreading code for various multimedia traffic. Proposed system utilizes the OVSF code that generated by generation property for spreading. The proposed MC-CDMA system use different lengths of OVSF code as a spreading code according to their data rate. The groupwise processing is accomplished by code grouping in OVSF code generation tree. Between each group, the code grouping interference canceller is performed to cancel other group interference. At that time the proposed receiver does not require any information about interference users. For the analysis of average BER performance, we propose system model and computer simulation were used. We also compare the system performance with that of a single rate MC-CDMA system used orthogonal code as a spreading code.

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  Cite this article

[IEEE Style]

N. Kim, "Performance Analysis of Multirate MC-CDMA Systems using OVSF Code Grouping," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 12, pp. 1135-1142, 2006. DOI: .

[ACM Style]

Nam-sun Kim. 2006. Performance Analysis of Multirate MC-CDMA Systems using OVSF Code Grouping. The Journal of Korean Institute of Communications and Information Sciences, 31, 12, (2006), 1135-1142. DOI: .

[KICS Style]

Nam-sun Kim, "Performance Analysis of Multirate MC-CDMA Systems using OVSF Code Grouping," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 12, pp. 1135-1142, 12. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880