TY - JOUR
T1 - On the Performance of Millimeter Wave-based RF-FSO Multi-hop and Mesh Networks
AU - Makki, Behrooz
AU - Svensson, Tommy
AU - Brandt-Pearce, Maite
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2023-03-31
Acknowledgements: This work was supported in part by the European Commission H2020 Programme 5G PPP mmMAGIC project under Grant No. 671650, and in part by the Swedish Governmental Agency for Innovation Systems (VINNOVA) within the VINN Excellence Center Chase. This work was presented at the IEEE WCNC 2017. The associate editor coordinating the review of this paper and approving it for publication was L. K. Rasmussen.
PY - 2017/9/22
Y1 - 2017/9/22
N2 - This paper studies the performance of multi-hop and mesh networks composed of millimeter wave-based radio frequency (RF) and free-space optical (FSO) links. The results are obtained in cases with and without hybrid automatic repeat request (HARQ). Using the central limit theorem as well as other state-of-the-art approximation schemes, we derive closed-form expressions for the networks’ outage probability and ergodic achievable rates. We also evaluate the effect of various parameters such as power amplifiers efficiency, number of antennas as well as different coherence times of the RF and the FSO links on the system performance. Finally, we determine the minimum number of the transmit antennas in the RF link such that the same rate is supported in the RF- and the FSO-based hops. The results show the efficiency of the RF-FSO setups in different conditions. Moreover, HARQ can effectively improve the outage probability/energy efficiency, and compensate for the effect of hardware impairments in RF-FSO networks. For common parameter settings of the RF-FSO dual-hop networks, outage probability of 10−4 and code rate of 3 nats-per-channel-use, the implementation of HARQ with a maximum of 2 and 3 retransmissions reduces the required power, compared to cases with open-loop communication, by 13 and 17 dB, respectively.
AB - This paper studies the performance of multi-hop and mesh networks composed of millimeter wave-based radio frequency (RF) and free-space optical (FSO) links. The results are obtained in cases with and without hybrid automatic repeat request (HARQ). Using the central limit theorem as well as other state-of-the-art approximation schemes, we derive closed-form expressions for the networks’ outage probability and ergodic achievable rates. We also evaluate the effect of various parameters such as power amplifiers efficiency, number of antennas as well as different coherence times of the RF and the FSO links on the system performance. Finally, we determine the minimum number of the transmit antennas in the RF link such that the same rate is supported in the RF- and the FSO-based hops. The results show the efficiency of the RF-FSO setups in different conditions. Moreover, HARQ can effectively improve the outage probability/energy efficiency, and compensate for the effect of hardware impairments in RF-FSO networks. For common parameter settings of the RF-FSO dual-hop networks, outage probability of 10−4 and code rate of 3 nats-per-channel-use, the implementation of HARQ with a maximum of 2 and 3 retransmissions reduces the required power, compared to cases with open-loop communication, by 13 and 17 dB, respectively.
UR - http://hdl.handle.net/10754/626795
UR - http://ieeexplore.ieee.org/document/8048557/
UR - http://www.scopus.com/inward/record.url?scp=85030675524&partnerID=8YFLogxK
U2 - 10.1109/twc.2017.2753225
DO - 10.1109/twc.2017.2753225
M3 - Article
SN - 1536-1276
VL - 16
SP - 7746
EP - 7759
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
IS - 12
ER -
