@inproceedings{ac434a1d6bf0403d830bc1ec4273b055,
title = "Investigating the Effects of Uplink Noise and Pilot Signal Interference by Ray-Tracing Simulations",
abstract = "The effects of uplink channel noise and inter-cell pilot signal interference on the downlink data rate in a multi-cell massive MIMO scenario is investigated by ray-tracing simulations. The scenario is based on a dense urban geometry and comprises 4 square-shaped cells. Up to 256 base station antennas and 64 single antenna users are present in each cell. Ray-tracing simulations are utilized to obtain the channel matrices. The downlink data rate, when pilot contamination is in effect, is calculated for different interference and transmitter configurations. The data rate is compared to the case where the channel matrix is computed according to a statistical channel model. Additionally, three parameters, the channel gain, the uplink signal delay and the orthogonality of the contaminating channels are analyzed in order to identify whether they can be exploited for distinguishing and mitigating the pilot contamination. Comparisons between the statistical model and ray-tracing simulations for the parameters are presented when applicable.",
keywords = "Downlink, Fading channels, Massive MIMO, Pilot contamination, Ray tracing",
author = "Taygur, \{Mehmet Mert\} and Eibert, \{Thomas F.\}",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018 ; Conference date: 09-09-2018 Through 12-09-2018",
year = "2018",
month = dec,
day = "18",
doi = "10.1109/PIMRC.2018.8580977",
language = "English",
series = "IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018",
}