Power allocation and spectral efficiency in multi-rate DS-CDMA systems without channel state information at transmitters

Husheng Li, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Power allocation and spectral efficiency of multi-rate and single code (SC) direct-sequence code division multiple access (DS-CDMA) systems without channel state information at transmitters in frequency flat fading channels are discussed. An explicit expression is found for the optimal power allocation under some mild assumption. An interference cancelling and minimum-mean-square- error detection scheme is shown to achieve the optimal power consumption. Spectral efficiencies of both SC and multiple code (MC) schemes are obtained, and numerical results show that MC outperforms SC due to the former's utilization of user diversity.

Original languageEnglish (US)
Title of host publication2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1371-1375
Number of pages5
Volume3
ISBN (Print)0780383443
StatePublished - Sep 27 2004
Event2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 - Atlanta, GA, United States
Duration: Mar 21 2004Mar 25 2004

Other

Other2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
CountryUnited States
CityAtlanta, GA
Period3/21/043/25/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Li, H., & Poor, H. V. (2004). Power allocation and spectral efficiency in multi-rate DS-CDMA systems without channel state information at transmitters. In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 (Vol. 3, pp. 1371-1375). Institute of Electrical and Electronics Engineers Inc..