摘要
卫星通信网络正面临多用户、大容量、高效率的接入需求带来的挑战。非正交多址技术作为5G通信网络中提高接入用户数量与用户通信容量的关键技术,在卫星领域的应用受到了广泛的关注。以NOMA技术中的功率域NOMA(PD-NOMA)为研究重点,在介绍其基本原理的基础上,总结了卫星通信网络中该技术的研究现状,分析了应用存在的技术难点,提出了未来研究的发展趋势。
Satellite communication networks are facing the challenges from the access requirements of multi-user, large capacity and high efficiency. As a key technology to improve the user’s access number and the communication capacity in 5 G communication networks, non-orthogonal multiple access(NOMA) has received broad attention in satellite communications. Focusing on power domain NOMA(PD-NOMA), this paper analyzed its principles, summarized its research status in satellite communication network, addressed the technical difficulties in applications, and presented the research development trend in the future.
作者
葛瑞星
李广侠
边东明
李龙
GE Ruixing;LI Guangxia;BIAN Dongming;LI Long(Army Engineering University, Nanjing 210007, China;PLA of China, 78616-50 Unit, Kunming 650221, China)
出处
《移动通信》
2019年第5期33-39,共7页
Mobile Communications
关键词
卫星通信网络
功率域
非正交多址
satellite communication networks
power domain
non-orthogonal multiple access
