Toward 6G MultiCell orthogonal time frequency space Systems: Interference Coordination and Cooperative Communications

被引:4
|
作者
Zhang, Zhengquan [1 ]
Wu, Yuchen [2 ]
Lei, Xianfu [1 ]
Lei, Lei [3 ]
Wei, Zhiqiang [4 ]
机构
[1] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Chengdu 610031, Sichuan, Peoples R China
[2] Waseda Univ, Grad Sch Fundamental Sci & Engn, Tokyo 1698050, Japan
[3] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Shaanxi, Peoples R China
[4] Xi An Jiao Tong Univ, Sch Math & Stat, Xian, Peoples R China
来源
IEEE VEHICULAR TECHNOLOGY MAGAZINE | 2024年 / 19卷 / 01期
基金
中国国家自然科学基金;
关键词
OFDM; Interference; Symbols; Channel estimation; 6G mobile communication; Doppler effect; 5G mobile communication; OTFS MODULATION; 5G;
D O I
10.1109/MVT.2023.3345609
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Supporting high mobility is an important feature of the 6G mobile communication systems, which puts forward a great challenge for conventional orthogonal frequency division multiplexing (OFDM) systems due to the severe Doppler effects. Recently, orthogonal time frequency space (OTFS) has been proposed as a promising waveform for high-mobility scenarios, due to its excellent capability of exploiting delay-Doppler (DD) diversity to significantly improve the system performance. However, in multicell OTFS systems, intercell interference (ICI) is one of the major challenges, especially for cell-edge users (CEUs). In this article, the impacts of different types of interference on OTFS systems are first studied. Then, interference coordination and cooperative communications-based multicell OTFS systems are studied to overcome ICI, respectively. Next, simulation results are presented for the performance evaluation of these schemes. Finally, the main challenges are discussed and future research directions for multicell OTFS systems are highlighted. The performance evaluations demonstrate the effectiveness of interference coordination and cooperative communications on multicell OTFS systems.
引用
收藏
页码:55 / 64
页数:10
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