TY - GEN
T1 - On the throughput of cognitive radio MIMO systems assisted with UAV relays
AU - Sboui, Lokman
AU - Ghazzai, Hakim
AU - Rezki, Zouheir
AU - Alouini, Mohamed-Slim
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2017/7/20
Y1 - 2017/7/20
N2 - We analyze the achievable rates of a cognitive radio MIMO system assisted by an unmanned aerial vehicle (UAV) relay. The primary user (PU) and the secondary user (SU) aim to communicate to the closest primary base station (BS) via a multi-access channel through the same UAV relay. The SU message is then forwarded from the primary BS to the secondary network with a certain incentive reward as a part of the cooperation protocol between both networks. We propose a special linear precoding scheme to enable the SU to exploit the PU free eigenmodes. We, also, present the expression of the power maximizing both primary and secondary rates under power budget, relay power, and interference constraints. In the numerical results, we evaluate the PU and SU rates of proposed scheme with respect to various problem parameters. We also highlight the effect of the UAV altitude on the SU and PU rates. Finally, we show that the relay matrix variation affects both rates that reach their peaks at different values of the matrix.
AB - We analyze the achievable rates of a cognitive radio MIMO system assisted by an unmanned aerial vehicle (UAV) relay. The primary user (PU) and the secondary user (SU) aim to communicate to the closest primary base station (BS) via a multi-access channel through the same UAV relay. The SU message is then forwarded from the primary BS to the secondary network with a certain incentive reward as a part of the cooperation protocol between both networks. We propose a special linear precoding scheme to enable the SU to exploit the PU free eigenmodes. We, also, present the expression of the power maximizing both primary and secondary rates under power budget, relay power, and interference constraints. In the numerical results, we evaluate the PU and SU rates of proposed scheme with respect to various problem parameters. We also highlight the effect of the UAV altitude on the SU and PU rates. Finally, we show that the relay matrix variation affects both rates that reach their peaks at different values of the matrix.
UR - http://hdl.handle.net/10754/625695
UR - http://ieeexplore.ieee.org/document/7986412/
UR - http://www.scopus.com/inward/record.url?scp=85027870891&partnerID=8YFLogxK
U2 - 10.1109/IWCMC.2017.7986412
DO - 10.1109/IWCMC.2017.7986412
M3 - Conference contribution
SN - 9781509043729
SP - 939
EP - 944
BT - 2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC)
PB - Institute of Electrical and Electronics Engineers (IEEE)
ER -