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FDD-based Cell-Free Massive MIMO Systems

Abstract: 

Cell-free massive MIMO system is a promising technology of 5G wireless communications that provide a user-centric coverage to the user by the basestation cooperation. Most prior works on the cell-free massive MIMO systems assume the time division duplexing (TDD) systems, although the frequency division duplexing (FDD) systems dominate the current wireless communications. In the FDD systems, CSI acquisition and feedback overhead are serious concerns when the number of antennas is large. To address these problems, we use the property that the uplink and downlink multipath components are similar, so-called angle reciprocity. By exploiting the angle reciprocity, basestation can directly acquire multipath component information from the uplink pilot signal. In this paper, we propose multipath component estimation technique and basestation cooperation scheme based on the multipath components for the FDD-based cell-free massive MIMO systems. Simulation results show that the proposed multipath component estimation technique outperforms the conventional subspace-based technique. Also, we show that the FDD-based cell-free massive MIMO systems substantially improve energy efficiency over the cellular systems.

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Paper Details

Authors:
Byonghyo Shim
Submitted On:
24 June 2018 - 2:09pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Seungnyun Kim
Paper Code:
1570440011
Document Year:
2018
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FDD-based Cell-Free Massive MIMO Systems.pdf

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[1] Byonghyo Shim, "FDD-based Cell-Free Massive MIMO Systems", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3326. Accessed: Sep. 20, 2018.
@article{3326-18,
url = {http://sigport.org/3326},
author = {Byonghyo Shim },
publisher = {IEEE SigPort},
title = {FDD-based Cell-Free Massive MIMO Systems},
year = {2018} }
TY - EJOUR
T1 - FDD-based Cell-Free Massive MIMO Systems
AU - Byonghyo Shim
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3326
ER -
Byonghyo Shim. (2018). FDD-based Cell-Free Massive MIMO Systems. IEEE SigPort. http://sigport.org/3326
Byonghyo Shim, 2018. FDD-based Cell-Free Massive MIMO Systems. Available at: http://sigport.org/3326.
Byonghyo Shim. (2018). "FDD-based Cell-Free Massive MIMO Systems." Web.
1. Byonghyo Shim. FDD-based Cell-Free Massive MIMO Systems [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3326