Frequency Domain Scrambling Code Allocation for MC-CDMA Based Communication Systems 


Vol. 32,  No. 1, pp. 44-50, Jan.  2007


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  Abstract

In typical MC-CDMA systems, different frequency-domain scrambling codes are randomly chosen from a given code set and then assigned to different subscriber stations using the same subcarrier set. When orthogonal codes are employed for the frequency-domain scrambling, the choice of the scrambling code does not affect the detection performance if the timing and frequency synchronizations are perfect and the channel characteristic is flat. However, in practical cases, inter-code interference often appears due to the broken code orthogonality. In this paper, the optimal order of allocating the orthogonal frequency-domain scrambling codes to new subscriber stations is derived under non-negligible timing offsets in MC-CDMA system.

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  Cite this article

[IEEE Style]

H. Lim, "Frequency Domain Scrambling Code Allocation for MC-CDMA Based Communication Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 1, pp. 44-50, 2007. DOI: .

[ACM Style]

Houngsoo Lim. 2007. Frequency Domain Scrambling Code Allocation for MC-CDMA Based Communication Systems. The Journal of Korean Institute of Communications and Information Sciences, 32, 1, (2007), 44-50. DOI: .

[KICS Style]

Houngsoo Lim, "Frequency Domain Scrambling Code Allocation for MC-CDMA Based Communication Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 32, no. 1, pp. 44-50, 1. 2007.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880