Resolution of Near-Field Beamforming and Its Impact on NOMA
Resolution of Near-Field Beamforming and Its Impact on NOMA
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DOI：
10.1109/lwc.2023.3331954
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发表时间：
2023-08
影响因子：
6.3
通讯作者：
Z. Ding
中科院分区：
文献类型：
--
作者：
Z. Ding
近场波束形成的分辨率是衡量如何有效区分具有不同位置的用户的重要指标。这封信确定的条件下，近场波束形成的分辨率是不完美的。这种不完美的分辨率意味着传统用户的预配置的近场波束仍然可以对其他用户有用，这激发了非正交多址（NOMA）的应用。分析和仿真结果表明，实际上，这些近场波束预配置的传统用户可以用来服务额外的NOMA用户有效，提高了系统的整体吞吐量和连接。
The resolution of near-field beamforming is an important metric to measure how effectively users with different locations can be distinguished. This letter identifies the condition under which the resolution of near-field beamforming is not perfect. This imperfect resolution means that a legacy user’s preconfigured near-field beam can be still useful to other users, which motivates the application of non-orthogonal multiple access (NOMA). Both the analytical and simulation results are presented to demonstrate that indeed those near-field beams preconfigured for legacy users can be used to serve additional NOMA users effectively, which improves the overall system throughput and connectivity.