TY - JOUR
T1 - UAV-Assisted and Intelligent Reflecting Surfaces-Supported Terahertz Communications
AU - Pan, Yijin
AU - Wang, Kezhi
AU - Pan, Cunhua
AU - Zhu, Huiling
AU - Wang, Jiangzhou
N1 - Funding information: This work was supported in part by the National Natural Science Foundation of China under Grant 61871128, Grant 61971129, and Grant 62001107; in part by the Basic Research Project of Jiangsu Provincial Department of Science and Technology under Grant BK20190339; and in part by the U.K. Royal Society Newton International Fellowship under Grant NIF\ R1\180777.
PY - 2021/6
Y1 - 2021/6
N2 - In this letter, unmanned aerial vehicles (UAVs) and intelligent reflective surface (IRS) are utilized to support terahertz (THz) communications. To this end, the joint optimization of UAV's trajectory, the phase shift of IRS, the allocation of THz sub-bands, and the power control are investigated to maximize the minimum average achievable rate of all users. An iteration algorithm based on successive Convex Approximation with the Rate constraint penalty (CAR) is developed to obtain UAV's trajectory, and the IRS phase shift is formulated as a closed-form expression with introduced pricing factors. Simulation results show that the proposed scheme significantly enhances the rate performance of the whole system.
AB - In this letter, unmanned aerial vehicles (UAVs) and intelligent reflective surface (IRS) are utilized to support terahertz (THz) communications. To this end, the joint optimization of UAV's trajectory, the phase shift of IRS, the allocation of THz sub-bands, and the power control are investigated to maximize the minimum average achievable rate of all users. An iteration algorithm based on successive Convex Approximation with the Rate constraint penalty (CAR) is developed to obtain UAV's trajectory, and the IRS phase shift is formulated as a closed-form expression with introduced pricing factors. Simulation results show that the proposed scheme significantly enhances the rate performance of the whole system.
KW - Intelligent reflective surface (IRS)
KW - reconfigurable intelligent surface (RIS)
KW - terahertz (THz) communications
KW - unmanned aerial vehicles (UAVs)
UR - http://www.scopus.com/inward/record.url?scp=85102300363&partnerID=8YFLogxK
U2 - 10.1109/LWC.2021.3063365
DO - 10.1109/LWC.2021.3063365
M3 - Article
AN - SCOPUS:85102300363
SN - 2162-2337
VL - 10
SP - 1256
EP - 1260
JO - IEEE Wireless Communications Letters
JF - IEEE Wireless Communications Letters
IS - 6
M1 - 9367288
ER -