Generalized Combined Power and Rate Adaptations in DS/CDMA Communications over Fading Channels 


Vol. 38,  No. 8, pp. 680-687, Aug.  2013


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  Abstract

We investigate a generalized combined power and rate adaptation scheme in direct-sequence (DS) code-division multiple-access (CDMA) communications over Nakagami fading channels. The transmission power allocated to user i is proportional to Gp/i , where G<SUB>i</SUB> is the channel gain of user i and p is a real number, and the data rate (i.e., spreading gain) is jointly adapted so that a desired QoS is maintained. We analyze the average data rate of the proposed adaptation scheme subject to fixed average and peak transmission power constraints. Our results show that the proposed joint adaptation scheme provides a significant performance improvement over power-only and rate-only adaptation.

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  Cite this article

[IEEE Style]

Y. H. Lee and D. H. Kim, "Generalized Combined Power and Rate Adaptations in DS/CDMA Communications over Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 8, pp. 680-687, 2013. DOI: .

[ACM Style]

Ye Hoon Lee and Dong Ho Kim. 2013. Generalized Combined Power and Rate Adaptations in DS/CDMA Communications over Fading Channels. The Journal of Korean Institute of Communications and Information Sciences, 38, 8, (2013), 680-687. DOI: .

[KICS Style]

Ye Hoon Lee and Dong Ho Kim, "Generalized Combined Power and Rate Adaptations in DS/CDMA Communications over Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 8, pp. 680-687, 8. 2013.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880