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Volume 46 Issue 6
Jun.  2024
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LI Xingwang, WANG Xinying, TIAN Xinji, WANG Xinshui, QIN Panke, CHEN Hui. Communication and Sensing Performance Analysis of RIS-assisted SWIPT-NOMA System under Non-ideal Conditions[J]. Journal of Electronics & Information Technology, 2024, 46(6): 2434-2442. doi: 10.11999/JEIT231395
Citation: LI Xingwang, WANG Xinying, TIAN Xinji, WANG Xinshui, QIN Panke, CHEN Hui. Communication and Sensing Performance Analysis of RIS-assisted SWIPT-NOMA System under Non-ideal Conditions[J]. Journal of Electronics & Information Technology, 2024, 46(6): 2434-2442. doi: 10.11999/JEIT231395

Communication and Sensing Performance Analysis of RIS-assisted SWIPT-NOMA System under Non-ideal Conditions

doi: 10.11999/JEIT231395
Funds:  The Key Research and Development Project of Henan Province (231111210500), The Natural Science Foundation of Shandong Province of China (ZR2021MF013), “Double First-Class” Discipline Creation Project of Surveying Science and Technology (GCCRC202306), The Doctoral Scientific Funds of Henan Polytechnic University (B2018-39)
  • Received Date: 2023-12-19
  • Rev Recd Date: 2024-04-15
  • Available Online: 2024-05-10
  • Publish Date: 2024-06-30
  • To meet the escalating demands for efficient communication and reliable sensing, a Reconfigurable Intelligent Surface(RIS)-assisted Simultaneous Wireless Information and Power Transfer(SWIPT)-Non-Orthogonal Multiple Access(NOMA) system is proposed in this paper. This system is designed to concurrently achieve target sensing and information transmission. Considering the imperfections of Successive Interference Cancellation (SIC) and Channel Estimation Error (CEE), a comprehensive analysis of the system’s reliability, effectiveness, and radar sensing performance is conducted. Analytical expressions for the Outage Probability (OP), Ergodic Rate (ER), Probability of Detection (PoD), and Radar Estimation Information Rate (REIR) of the system are derived to provide insights into its performance. The analysis results reveal the following findings: the presence of imperfect SIC and CEE adversely impacts the system’s performance; the OP diminishes as the transmitted power of base station increases, eventually converging to a constant value in the high Signal-to-Noise Ratio (SNR) region; both the ER and the REIR increase with the base station’s transmitted power and eventually stabilize at an upper limit value in the high SNR region; the PoD increases with the base station’s transmit power at different detection thresholds; the Joint Radar Detection and Communication Coverage Probability (JRDCCP) decreases with the outage threshold and detection threshold, respectively.
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