星地混合移动回传系统的干扰规避和减缓技术  

Interference Avoidance and Mitigation Techniques for Hybrid Satellite-Terrestrial Mobile Backhaul System

作　　者：张晓燕[1] 王贺 ZHANG Xiaoyan;WANG He(The State Radio Monitoring Center,Beijing 100037,China;The State Radio Monitoring Center Testing Center,Beijing 100041,China)

机构地区：[1]国家无线电监测中心,北京100037 [2]国家无线电监测中心检测中心,北京100041

出　　处：《天地一体化信息网络》2021年第1期28-34,共7页Space-Integrated-Ground Information Networks

基　　金：国家重点研发计划(No.2020YFB1807900)。

摘　　要：为了更有效地利用稀缺的频谱资源,最好的办法之一是让卫星和地面共享频谱。考虑在星地混合移动回传系统中加入诸如天线阵列、多天线通信技术、智能回传节点、干扰感知功率分配和授权共享访问等干扰规避和减缓技术来阐述如何增强系统容量且无干扰地共享频谱。通过对所提系统的理论分析和数值仿真,说明使用上述干扰规避和减缓技术可以达到满足未来回传网络容量需求、减轻地面传输负担、减轻同信道间干扰、节省硬件成本、降低能耗以及改善频谱使用效率的目的。One of the best ways is to assume that satellite and terrestrial segments share the same spectrum in order to utilize more efficiently the scarce and expensive spectrum resource.The interference avoidance and mitigation technologies such as antenna arrays,multi-antenna communication technologies,intelligent backhaul nodes,interference-aware power allocation method,and licensed shared access(LSA)were deployed in a hybrid satellite-terrestrial mobile backhaul(MBH)system to demonstrated how to enhance the overall capacity of the hybrid system and reuse the spectrum at different systems on a noninterfering basis.Through theoretical analysis and numerical simulations,it is observed that these interference avoidance and mitigation techniques mentioned above could be used efficiently to meet the enormous capacity demands of future backhaul networks,off-load the terrestrial segment,manage intrasystem(terrestrial)and the intersystem(satellite-terrestrial)co-channel interference(CCI),lead to hardware costs and energy-consumption savings,and improve spectrum utilization efficiency.

关 键 词：星地混合网络 移动回传系统 干扰规避 干扰减缓 频谱共享 

分 类 号：TN927[电子电信—通信与信息系统]