天基物联网中一种非正交多载波调制技术  

Non-orthogonal Multi-carrier Technology for Space-based Internet of Things Applications

作　　者：赵梦迪 李洪星 李屹[1] 方莉[1] 陈萍[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876 [2]上海航天电子技术研究所,上海201109

出　　处：《无线电工程》2018年第3期183-187,共5页Radio Engineering

基　　金：企;事业单位横向委托项目(A2015248)

摘　　要：物联网技术在海洋工程、航运和船舶跟踪等领域发挥着重要的作用。天基物联网是物联网技术在空间领域的延伸,是卫星通信与新兴物联网技术的融合,将大大促进空天地一体化网络的发展。针对天基物联网的应用需求,面向海上机器与机器(M2M)通信系统,设计了一种新型非正交多载波调制方案。该方案可提高传输速率,降低频偏的敏感度,适合大范围的数据通信环境。分析与仿真结果表明,提出的机制可有效抑制子载波间的非正交性导致的子载波间干扰(ICI),满足目标误比特率(BER)条件,获得与子载波正交时类似的性能,实现高速数据传输速率,保证了系统的可靠性。The Internet of Things（IoT） technology plays an important role in shipping,vessel tracking,marine engineering and other fields.Space-based Internet of Things（S-IoT） is an extension of IoT in the space field.It is the integration of satellite communications and emerging IoT technology,which will greatly promote the development of the earth integrated network.In this paper,a new non-orthogonal multi-carrier modulation scheme is designed for the Machine-to-Machine（M2M） communication system to make it applied to space-based networking.This scheme can effectively improve the transmission rate and reduce the sensitivity to frequency offset,so it is suitable for a wide range of data communication environment.Simulation results indicate that the scheme proposed can effectively restrain Inter-Carrier Interference（ICI） caused by non-orthogonal subcarriers,and realize high speed data transmission rate,which provides a new way for information collection and ship monitoring.

关 键 词：天基物联网 非正交多载波调制 机器与机器 子载波间干扰 

分 类 号：TN911.7[电子电信—通信与信息系统]