A Unified Power Control Algorithm for Multiuser Detectors in Large Systems: Convergence and Performance

Simple item page
dc.creatorMeshkati, Farhad
dc.creatorPoor, H. Vincent
dc.creatorSchwartz, Stuart C.
dc.creatorGuo, Dongning
dc.date2005-10-07
dc.date.accessioned2026-07-07T08:15:41Z
dc.date.available2026-07-07T08:15:41Z
dc.descriptionA 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. In addition, the performance of the algorithm in finite-size systems is studied and compared with that of existing power control schemes. The UPC algorithm is particularly suitable for systems with randomly generated long spreading sequences (i.e., sequences whose period is longer than one symbol duration).
dc.descriptionProceedings of the 43rd Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, September 2005
dc.identifierhttps://arxiv.org/abs/cs/0510021
dc.identifierhttp://arxiv.org/abs/cs/0510021
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/133526
dc.subjectInformation Theory
dc.titleA Unified Power Control Algorithm for Multiuser Detectors in Large Systems: Convergence and Performance
dc.typetext

Files

Collections

arXiv