TY - GEN
T1 - Bidirectional Backscatter NOMA Schemefor Efficient CDRT Systems
AU - Hu, Rongfei
AU - Xu, Yao
AU - Zhu, Jianyue
AU - Guo, Jichong
AU - Jia, Shaobo
AU - Lou, Yi
AU - Shan, Chengzhao
N1 - Publisher Copyright:
© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2025.
PY - 2025
Y1 - 2025
N2 - Non-orthogonal multiple access (NOMA) based coordinated direct and relay transmission (CDRT) is recognized as one of the enabling technologies for effectively enhancing spectral efficiency and coverage range in mobile communication systems. However, most conventional NOMA based CDRT schemes only support cellular data transmission. To simultaneously support both cellular and Internet of Things (IoT) data transmission and further improve the spectral efficiency of the system, this paper proposes a novel bidirectional backscatter NOMA scheme for CDRT systems. Specifically, the proposed scheme utilizes both uplink NOMA and downlink NOMA to facilitate the sharing of spectrum and time resources between cellular information and IoT data reflected by users. To accurately characterize the effectiveness of the proposed scheme, the closed-form expressions for the ergodic sum capacity (ESC) are derived. Simulation experiments validate the correctness of theoretical analysis and demonstrate that the proposed scheme can achieve better ESC performance than the conventional NOMA based CDRT and orthogonal multiple access.
AB - Non-orthogonal multiple access (NOMA) based coordinated direct and relay transmission (CDRT) is recognized as one of the enabling technologies for effectively enhancing spectral efficiency and coverage range in mobile communication systems. However, most conventional NOMA based CDRT schemes only support cellular data transmission. To simultaneously support both cellular and Internet of Things (IoT) data transmission and further improve the spectral efficiency of the system, this paper proposes a novel bidirectional backscatter NOMA scheme for CDRT systems. Specifically, the proposed scheme utilizes both uplink NOMA and downlink NOMA to facilitate the sharing of spectrum and time resources between cellular information and IoT data reflected by users. To accurately characterize the effectiveness of the proposed scheme, the closed-form expressions for the ergodic sum capacity (ESC) are derived. Simulation experiments validate the correctness of theoretical analysis and demonstrate that the proposed scheme can achieve better ESC performance than the conventional NOMA based CDRT and orthogonal multiple access.
KW - Backscatter communication
KW - Coordinated direct and relay transmission
KW - Ergodic sum capacity
KW - Non-orthogonal multiple access
UR - https://www.scopus.com/pages/publications/105002044585
U2 - 10.1007/978-3-031-86196-3_18
DO - 10.1007/978-3-031-86196-3_18
M3 - 会议稿件
AN - SCOPUS:105002044585
SN - 9783031861956
T3 - Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
SP - 214
EP - 225
BT - Wireless and Satellite Systems - 14th EAI International Conference, WiSATS 2024, Proceedings
A2 - Chen, Hsiao-Hwa
A2 - Meng, Weixiao
PB - Springer Science and Business Media Deutschland GmbH
T2 - 14th EAI International Conference on Wireless and Satellite Systems, WiSATS 2024
Y2 - 23 August 2024 through 25 August 2024
ER -