AI 中文总结
该研究针对NOMA下行链路，提出功率域复用预编码FTN信号传输方案，通过在时域和功率域引入非正交性灵活分配资源，利用特征分解消除ISI，连续干扰消除消除多用户干扰，推导解析速率边界并展示误码率数值结果。
AI 中文摘要
在本文中，我们提出了一种新颖的预编码快于奈奎斯特（FTN）信号传输方案，该方案在非正交多址接入（NOMA）下行链路中采用功率域复用，以利用高频谱效率和同时多用户连接的联合优势。在符号间隔（时间）域和多址接入（功率）域引入非正交性以实现灵活的资源分配。利用FTN特定符号间干扰（ISI）矩阵的特征分解有效消除ISI，同时采用连续干扰消除消除NOMA引起的多用户干扰。我们推导了可实现的解析速率边界，并展示了该方案误码率性能的数值结果。
英文摘要
In this paper, we propose a novel precoded faster-than-Nyquist (FTN) signaling scheme with power-domain-multiplexing in non-orthogonal multiple access (NOMA) downlink for tapping the joint benefits of high spectral efficiency and simultaneous multiuser connectivity. Non-orthogonality is introduced in both the symbol-interval (time) domain as well as in the multiple-access (power) domain to achieve a flexible resource allocation. Eigendecomposition of the FTN-specific intersymbol interference (ISI) matrix is used to achieve efficient cancellation of ISI, while successive interference cancellation is used to eliminate multiuser interference induced by NOMA. We derive the achievable analytical rate bound and demonstrate the numerical results of the bit error rate performance for the proposed scheme.
Comments6 pages, 6 figures, Preprint (accepted version) for publication in IEEE Global Communications Conference (IEEE GLOBECOM), Rio de Janeiro, Brazil, Dec. 2022, pp. 3977-3982
DOI：10.1109/GLOBECOM48099.2022.10001617
