Pre-Processing Effects in Limited Feedback for Scheduling Algorithms Using Cross-Layer Issues

Cibelly Araújo, Charles Cavalcante, Walter Freitas

DOI: 10.14209/sbrt.2007.31279

Evento: XXV Simpósio Brasileiro de Telecomunicações (SBrT2007)

Keywords: scheduling policies physical layer cross-layer channel state information

Abstract

In this paper we introduce a new Pre-Processing Method (PPM) and we observe its impact in scheduling algorithms. We also suggest a Cumulative Distribution Function (CDF) curve of Signal-to-Noise Ratio (SNR) of the scheduled users. This CDF curve reflects characteristics of application and information about scheduling policies. Based on these curves, thresholds are defined in order to avoid reporting of unnecessary Channel State Information (CSI). This saving of resources is very important when dealing with limited feedback that may limit the system performance/capacity. Simulation results confirm the potential of the proposal.

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