Sensitivity of OFDMA-Based Macrocellular LTE Networks to Femtocell Deployment Density and Isolation

Conference: ISWCS 2013 - The Tenth International Symposium on Wireless Communication Systems
08/27/2013 - 08/30/2013 at Ilmenau, Deutschland

Proceedings: ISWCS 2013

Pages: 5Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Authors:
Taranetz, Martin; Ikuno, Josep Colom; Rupp, Markus (Vienna University of Technology, Institute of Telecommunications, Gusshausstrasse 25/389, A-1040 Vienna, Austria)

Abstract:
In this paper, we investigate the impact of femtocell deployment density and femtocell isolation on the downlinkperformance of Orthogonal Frequency Division Multiple Access (OFDMA)-based macrocellular Long Term Evolution (LTE) networks by system level simulations. Femtocell isolation is defined as the separation between macro- and femto tiers by wall penetration loss. We evaluate the relation between user throughput and femtocell density for highly-isolated and nonisolated deployments. The system model is based on a Poisson Cluster Process and simulations are carried out with the Vienna LTE system level simulator. We provide results for Signal-to- Interference-Plus-Noise Ratio (SINR), throughput, fairness and gain over non-femtocell-enhanced networks. Our investigations indicate a femto-network’s high sensitivity to varying wall penetration loss and we observe that in dense deployments, average user throughput conceals the severe performance degradation of macrocell-attached users. The whole simulation environment together with the fully reproducible results of this paper are made available for download on our homepage.