Rate Adaptation in Predictor Antenna Systems
Journal article, 2019

Predictor antenna (PA) system is referred to as a system with two sets of antennas on the roof of a vehicle, where the PAs positioned in the front of the vehicle are used to predict the channel state observed by the receive antennas (RAs) that are aligned behind the PAs. This letter studies the performance of PA systems in the presence of the mismatching problem, i.e., when the channel observed by the PA is not exactly the same as the channel experienced by the RA. Particularly, we study the effect of spatial mismatching on the accuracy of channel state information estimation and rate adaption. We derive closed-form expressions for instantaneous throughput, outage probability, and the throughput-optimized rate adaptation. Also, we take the temporal evolution of the channel into account and evaluate the system performance in temporally-correlated conditions. The simulation and analytical results show that, while PA-assisted adaptive rate adaptation leads to considerable performance improvement, the throughput and the outage probability are remarkably affected by the spatial mismatch and temporal correlations.

channel state information (CSI)

throughput.

mobility

spatial correlation

temporal correlation

outage probability

rate adaptation

predictor antenna

Backhaul

Author

Hao Guo

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Behrooz Makki

Ericsson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Tommy Svensson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

IEEE Wireless Communications Letters

2162-2337 (ISSN)

Vol. In Press

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/LWC.2019.2958353

More information

Latest update

7/23/2020