TY - JOUR
T1 - Power Allocation in HARQ-based Predictor Antenna Systems
AU - Guo, Hao
AU - Makki, Behrooz
AU - Alouini, Mohamed-Slim
AU - Svensson, Tommy
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2020/7/20
Y1 - 2020/7/20
N2 - In this work, we study the performance of predictor antenna (PA) systems using hybrid automatic repeat request (HARQ). Here, the PA system is referred to as a system with two sets of antennas on the roof of a vehicle. In this setup, the PA positioned in the front of the vehicle can be used to predict the channel state information at the transmitter (CSIT) for the receive antenna (RA) that is aligned behind the PA. Considering spatial mismatch due to mobility, we derive closedform expressions for the optimal power allocation and the
minimum average power of PA systems under different outage probability constraints. The results are presented for different types of HARQ protocols and we study the effect of different parameters on the performance of PA systems. As we show, our
proposed approximation scheme enables us to analyze PA systems with high accuracy. Moreover, for different vehicle speeds, we
show that HARQ-based feedback can reduce the outage-limited power consumption of PA systems by orders of magnitude.
AB - In this work, we study the performance of predictor antenna (PA) systems using hybrid automatic repeat request (HARQ). Here, the PA system is referred to as a system with two sets of antennas on the roof of a vehicle. In this setup, the PA positioned in the front of the vehicle can be used to predict the channel state information at the transmitter (CSIT) for the receive antenna (RA) that is aligned behind the PA. Considering spatial mismatch due to mobility, we derive closedform expressions for the optimal power allocation and the
minimum average power of PA systems under different outage probability constraints. The results are presented for different types of HARQ protocols and we study the effect of different parameters on the performance of PA systems. As we show, our
proposed approximation scheme enables us to analyze PA systems with high accuracy. Moreover, for different vehicle speeds, we
show that HARQ-based feedback can reduce the outage-limited power consumption of PA systems by orders of magnitude.
UR - http://hdl.handle.net/10754/662522
UR - https://ieeexplore.ieee.org/document/9144521/
U2 - 10.1109/lwc.2020.3010579
DO - 10.1109/lwc.2020.3010579
M3 - Article
SN - 2162-2337
SP - 1
EP - 1
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
ER -