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Type: Artigo de periódico
Title: Inter-Cell Interference in Noncooperative TDD Large Scale Antenna Systems
Author: Fernandes, F
Ashikhmin, A
Marzetta, TL
Abstract: In this paper we study the performance of cellular networks when their base stations have an unlimited number of antennas. In previous work, the asymptotic behavior of the signal to interference plus nose ratio (SINR) was obtained. We revisit these results by deriving the rigorous expression for the SINR of both downlink and uplink in the scenario of infinite number of antennas. We show that the contamination of the channel estimates happens whenever a pilot sequence is received at a base station simultaneously with non-orthogonal signals coming from other users. We propose a method to avoid such simultaneous transmissions from adjacent cells, thus significantly decreasing interference. We also investigate the effects of power allocation in this interference-limited scenario, and show that it results in gains of over 15dB in the signal to interference ratio for the scenario simulated here. The combination of these two techniques results in rate gains of about 18 times in our simulations.
Subject: Antenna arrays
cellular networks
mobile communication
multiple access interference
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/JSAC.2013.130208
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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