Rate Adaptation in Predictor Antenna Systems
Artikel i vetenskaplig tidskrift, 2020

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.

temporal correlation

predictor antenna

rate adaptation


spatial correlation

outage probability



channel state information (CSI)


Hao Guo

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Behrooz Makki

Ericsson AB

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Tommy Svensson

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Wireless Communications Letters

2162-2337 (ISSN) 2162-2345 (eISSN)

Vol. 9 4 448-451 8928980


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