Efficient Power and Rate Adaptation Strategy for Improved Spectral Efficiency in Multi-Carrier DS-CDMA Communications 


Vol. 38,  No. 8, pp. 697-703, Aug.  2013


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  Abstract

We propose an efficient frequency-time domain resource allocation scheme in multi-carrier (MC) direct-sequence code-division multiple-access (DS/CDMA) communications. We consider, as a power allocation strategy in the frequency domain, transmitting each user"s DS waveforms over the user"s sub-band with the largest channel gain. We then consider rate adaptation in the time domain, where the data rate is adapted such that a desired transmission quality is maintained. We analyze the achievable average data rate of the proposed scheme with fixed average transmission power, and compare the performance to single carrier DS/CDMA systems with power and rate adaptations.

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  Cite this article

[IEEE Style]

Y. H. Lee and D. H. Kim, "Efficient Power and Rate Adaptation Strategy for Improved Spectral Efficiency in Multi-Carrier DS-CDMA Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 8, pp. 697-703, 2013. DOI: .

[ACM Style]

Ye Hoon Lee and Dong Ho Kim. 2013. Efficient Power and Rate Adaptation Strategy for Improved Spectral Efficiency in Multi-Carrier DS-CDMA Communications. The Journal of Korean Institute of Communications and Information Sciences, 38, 8, (2013), 697-703. DOI: .

[KICS Style]

Ye Hoon Lee and Dong Ho Kim, "Efficient Power and Rate Adaptation Strategy for Improved Spectral Efficiency in Multi-Carrier DS-CDMA Communications," The Journal of Korean Institute of Communications and Information Sciences, vol. 38, no. 8, pp. 697-703, 8. 2013.