Signal Processing for MIMO-NOMA: Present and Future Challenges
NOMA, as the newest member of the multiple access family, is envisioned to be an essential component of 5G mobile networks. The combination of NOMA and multi-antenna MIMO technologies exhibits significant potential in improving spectral efficiency and providing better wireless services to more users...
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| Veröffentlicht in: | IEEE wireless communications 2018-04, Vol.25 (2), p.32-38 |
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| container_title | IEEE wireless communications |
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| creator | Huang, Yongming Zhang, Cheng Wang, Jiaheng Jing, Yindi Yang, Luxi You, Xiaohu |
| description | NOMA, as the newest member of the multiple access family, is envisioned to be an essential component of 5G mobile networks. The combination of NOMA and multi-antenna MIMO technologies exhibits significant potential in improving spectral efficiency and providing better wireless services to more users. In this article, we introduce the basic concepts of MIMO-NOMA and summarize the key technical problems in MIMO-NOMA systems. Then we explore the problem formulation, beamforming, user clustering, and power allocation of single/multi-cluster MIMO-NOMA in the literature along with their limitations. Furthermore, we point out an important issue of the stability of successive interference cancellation that arises using achievable rates as performance metrics in practical NOMA/MIMO-NOMA systems. Finally, we discuss incorporating NOMA with massive/millimeter- wave MIMO, and identify the main challenges and possible future research directions in this area. |
| doi_str_mv | 10.1109/MWC.2018.1700108 |
| format | Article |
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| subjects | 5G mobile communication Array signal processing Decoding Interference MIMO communication Multiaccess communication NOMA Resource management Silicon carbide |
| title | Signal Processing for MIMO-NOMA: Present and Future Challenges |
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