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A Unified Power Control Algorithm for Multiuser Detectors in Large Systems: Convergence and Performance
Overview A unified approach to energy-efficient power control, applicable to a large family of receivers including the matched filter, the decorrelator, the (linear) Minimum-Mean-Square-Error detector (MMSE), and the individually and jointly optimal multiuser detectors, has recently been proposed for Code-Division-Multiple-Access (CDMA) networks. This Unified Power Control (UPC) algorithm exploits the linear relationship that has been shown to exist between the transmit power and the output Signal-to-Interference-plus-noise Ratio (SIR) in large systems. Based on this principle and by computing the multiuser efficiency, the UPC algorithm updates the users' transmit powers in an iterative way to achieve the desired target SIR. In this paper, the convergence of the UPC algorithm is proved for the matched filter, the decorrelator, and the MMSE detector.
| Publisher | Princeton University | File Format | |
|---|---|---|---|
| Date Published | October 2005 | Downloads | 41 |
| Format | White Papers | ||
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