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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hamid, A. Hoshyar, R. Tafazolli, R. |
| Copyright Year | 2004 |
| Description | Author affiliation: Center for Commun. Syst. Res., Surrey Univ., Guildford, UK (Hamid, A.; Hoshyar, R.; Tafazolli, R.) |
| Abstract | This paper highlights limitations of the ECPC (each carrier power control) concept (S.P.V. Jarot and M. Nakagawa, Proc. IEEE Int. Symp. on Computers and Comms., pp. 331-337, 1999) - originally proposed for OFDM-DS-CDMA - when extended to MC-CDMA (multi-carrier code division multiple access) systems. First, its impractical signaling overhead of 80%; secondly its inability to be used as an uplink power control mechanism. Then we propose BBPC (hand based power control) as a practical alternative to ECPC for MC-CDMA systems. Unlike ECPC that controls power on each carrier basis, BBPC assigns the same power level to a band of carriers (lying within coherence bandwidth of channel). It has been shown that with a nominal performance loss, BBPC reduces the signaling overheads to 2.5% and by employing the control index estimator after de-spreading, it can be used as an uplink power control mechanism for MC-CDMA. We have used SIR (signal to interference ratio) as a power control index, BER and standard deviation of power control error as performance metrics. |
| Starting Page | 404 |
| Ending Page | 408 |
| File Size | 685238 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780385217 |
| ISSN | 10903038 |
| DOI | 10.1109/VETECF.2004.1400033 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-09-26 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Power control Multicarrier code division multiple access Bandwidth Multiaccess communication Performance loss Fading Multiple access interference Coherence OFDM Quality of service |
| Content Type | Text |
| Resource Type | Article |
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