Band Based Power Control (BBPC) for MC-CDMA Radio Interface
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Hamid, Asif, Hoshyar, Reza and Tafazolli, Rahim (2004) Band Based Power Control (BBPC) for MC-CDMA Radio Interface IEEE 60th Vehicular Technology Conference, Volume One . pp. 404-408. ISSN 1090-3038
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Abstract
This paper highlights, limitations of ECPC (Each Carrier Power Control) concept [1] - 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 (Band Based Power Control) as a practical alternative to ECPC for MC-CDMA systems. Unlike, ECPC that controls power on each carrier basis, BBPC assigns 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.
| Item Type: | Article |
|---|---|
| Additional Information: | ©2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Divisions: | Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research |
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| ID Code: | 2299 |
| Deposited By: | Melanie Hughes |
| Deposited On: | 20 Sep 2010 10:16 |
| Last Modified: | 24 Jan 2013 09:08 |
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