Title
Localization Error Bounds for 5G mmWave Systems Under I/Q Imbalance
Abstract
Location awareness is expected to play a significant role in 5G millimeter-wave (mmWave) communication systems. One of the basic elements of these systems is quadrature amplitude modulation (QAM), which has in-phase and quadrature (I/Q) modulators. It is not uncommon for transceiver hardware to exhibit an imbalance in the I/Q components, causing degradation in data rate and signal quality. Under an amplitude and phase imbalance model at both the transmitter and receiver, 2D positioning performance in 5G mmWave systems is considered. Towards that, we derive the position and orientation error bounds and study the effects of the I/Q imbalance parameters on the derived bounds. The numerical results reveal that I/Q imbalance impacts the performance similarly, whether it occurs at the transmitter or the receiver, and can cause a degradation up to 12% in position and orientation estimation accuracy.
Year
DOI
Venue
2020
10.1109/TVT.2020.2991377
IEEE Transactions on Vehicular Technology
Keywords
DocType
Volume
amplitude imbalance model,transceiver hardware,I-Q modulators,in-phase and quadrature modulators,2D positioning performance,phase imbalance model,signal quality,quadrature amplitude modulation,location awareness,localization error bounds,orientation error bounds,5G mmWave systems
Journal
69
Issue
ISSN
Citations 
7
0018-9545
2
PageRank 
References 
Authors
0.37
0
5
Name
Order
Citations
PageRank
Fariba Ghaseminajm120.37
Zohair Abu-Shaban2505.91
Salama S. Ikki320.37
Henk Wymeersch41589128.47
Craig R. Benson520.37