TY - GEN
T1 - A Novel Hybrid Duplex Scheme for Two-hop Relaying System
AU - Liu, Siling
AU - Chen, Zhengchuan
AU - Jia, Yunjian
AU - Wangt, Min
AU - Quek, Tony Q.S.
N1 - Funding Information:
This work was supported in part by the National Natural Science Foundation of China under Grant 61901066, Grant 61971077, in part by Natural Science Foundation of Chongqing, China under Grant cstc2019jcyj-msxmX0575, in part by the State Key Laboratory of Integrated Services Networks (Xidian University) under grant ISN22-17, and in part by China Postdoctoral Science Foundation Grant No.2021MD703938. It is also supported by the National Research Foundation, Singapore and Infocomm Media Development Authority under its Future Communications Research & Development Programme. Any opinions, findings and conclusions or recommendations expressed in this material are those of the author( s) and do not reflect the views of National Research Foundation, Singapore and Infocomm Media Development Authority.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - To take advantages of the high spectral efficiency of full-duplex (FD) mode and control rate reduction caused by the self-interference introduced to the relay receiver, a novel hybrid duplex scheme is proposed where the relay works in FD mode following a duty cycle, and receives-only for the rest of time. After characterizing the achievable rate, a joint FD duty cycle and source power allocation problem is formulated to maximize the achievable rate. It is proved that the optimal source power allocation follows a water-filling algorithm over time. Moreover, the optimal FD duty cycle is obtained by considering low-, medium-, and high-source power cases. Specially, closed-form approximation of the optimal FD duty cycle for medium-source power case is presented. Besides, it is shown that the proposed hybrid duplex scheme degenerates to half-duplex and FD modes for low-and high-source power cases, respectively. Numerical results demonstrate that the proposed scheme can effectively improve the achievable rate for a wide range of parameters.
AB - To take advantages of the high spectral efficiency of full-duplex (FD) mode and control rate reduction caused by the self-interference introduced to the relay receiver, a novel hybrid duplex scheme is proposed where the relay works in FD mode following a duty cycle, and receives-only for the rest of time. After characterizing the achievable rate, a joint FD duty cycle and source power allocation problem is formulated to maximize the achievable rate. It is proved that the optimal source power allocation follows a water-filling algorithm over time. Moreover, the optimal FD duty cycle is obtained by considering low-, medium-, and high-source power cases. Specially, closed-form approximation of the optimal FD duty cycle for medium-source power case is presented. Besides, it is shown that the proposed hybrid duplex scheme degenerates to half-duplex and FD modes for low-and high-source power cases, respectively. Numerical results demonstrate that the proposed scheme can effectively improve the achievable rate for a wide range of parameters.
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U2 - 10.1109/VTC2022-Spring54318.2022.9860957
DO - 10.1109/VTC2022-Spring54318.2022.9860957
M3 - Conference contribution
AN - SCOPUS:85137810209
T3 - IEEE Vehicular Technology Conference
BT - 2022 IEEE 95th Vehicular Technology Conference - Spring, VTC 2022-Spring - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 95th IEEE Vehicular Technology Conference - Spring, VTC 2022-Spring
Y2 - 19 June 2022 through 22 June 2022
ER -