摘要
非地面网络(3GPP NTN)是5G演进以及6G网络中的重要组成部分,为了增强卫星容量和频谱效率,基于相控阵的密集多波束、同频部署已逐渐成为研究热点。由于波束成形中旁瓣功率泄露随着波束数增加会造成严重波束间叠加干扰,亟需低复杂度多用户干扰消除方案。从预编码技术角度出发,探讨了非线性预编码在卫星通信系统中的应用和优化方法,并通过实际硬件平台测试,验证了在5G NR基带链路中实现该方案的有效性和先进性。
The non-terrestrial network(NTN)is an important part of 5G evolution as well as 6G networks,and in order to enhance the satellite capacity and spectral efficiency,phase array-based dense multi-beam and co-frequency deployment have gradually become research hotspots.Due to the severe inter-beam superposition interference caused by the side-lobe power leakage in beamforming with the increase of the number of beams,there is an urgent need for low-complexity multi-user interference cancellation schemes.In this paper,we discuss the application and optimization method of nonlinear precoding in satellite communication systems from the perspective of precoding techniques,and verify the effectiveness and advancement of implementing the scheme in 5G NR baseband links through actual hardware platform tests.
作者
王珂
张歆宸
林文亮
邓中亮
WANG Ke;ZHANG Xinchen;LIN Weniang;DENG Zhongiang(School of Information and Communication Engineering,Bejing University of Posts and Telecommunications,Beijing 100876,China)
出处
《移动通信》
2024年第6期2-12,共11页
Mobile Communications
基金
科技部重点研发计划项目“6G星地融合网络关键技术验证仿真平台”(2020YFB1808005)
重庆市自然科学基金创新发展联合基金项目“面向海量用户窄带接入的低轨卫星互联网高谱效多载波波形研究”(CSTB2023NSCQ-LMX0008)。
关键词
3GPP
NTN
多波束卫星
波束间干扰
非线性预编码
non-terrestrial network(NTN)
multi-beam satellites
inter-beam interference
nonlinear precoding
