TY - GEN
T1 - A Unified Approach to Analyze the Performance of NOMA with Different Grouping Strategies in Downlink
AU - Li, Jinqiang
AU - Luo, Xiaomeng
AU - Chen, Hsiao Hwa
AU - Chen, Shuyi
AU - Guo, Qing
N1 - Publisher Copyright:
© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2025.
PY - 2025
Y1 - 2025
N2 - This paper conducts an analysis and investigation of outage performances and ergodic sum capacity for different users within each cluster in downlink non-orthogonal multiple access (NOMA) systems. Analytical expressions for outage performance and ergodic sum capacity are derived and analyzed. The analysis and simulation demonstrate that NOMA systems with more users in one cluster exhibit higher performance with lower average channel gains, while NOMA systems with fewer users in one cluster exhibit higher performance with higher average channel gains. This suggests the need for different user grouping strategies under varying signal-to-noise ratio conditions, and the fixed user grouping schemes for NOMA systems are inadequate to adapt to complex environments and diverse services. Consequently, this paper brings in the mixed user grouping NOMA systems, which offers greater advantages comparing to orthogonal multiple access (OMA) and conventional NOMA. Finally, this study provides pathways for further research on mixed user grouping in downlink NOMA systems.
AB - This paper conducts an analysis and investigation of outage performances and ergodic sum capacity for different users within each cluster in downlink non-orthogonal multiple access (NOMA) systems. Analytical expressions for outage performance and ergodic sum capacity are derived and analyzed. The analysis and simulation demonstrate that NOMA systems with more users in one cluster exhibit higher performance with lower average channel gains, while NOMA systems with fewer users in one cluster exhibit higher performance with higher average channel gains. This suggests the need for different user grouping strategies under varying signal-to-noise ratio conditions, and the fixed user grouping schemes for NOMA systems are inadequate to adapt to complex environments and diverse services. Consequently, this paper brings in the mixed user grouping NOMA systems, which offers greater advantages comparing to orthogonal multiple access (OMA) and conventional NOMA. Finally, this study provides pathways for further research on mixed user grouping in downlink NOMA systems.
UR - https://www.scopus.com/pages/publications/105002122049
UR - https://www.scopus.com/pages/publications/105002122049#tab=citedBy
U2 - 10.1007/978-3-031-86203-8_23
DO - 10.1007/978-3-031-86203-8_23
M3 - Conference contribution
AN - SCOPUS:105002122049
SN - 9783031862021
T3 - Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
SP - 292
EP - 306
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 -