卫星网络和高空平台网络频谱共存下的分布式鲁棒波束成形算法OACSCDCSTPCD
Distributed robust beamforming algorithm for spectral coexistence in satellite and high altitude platform networks
面向由卫星网络和高空平台网络有机结合的星空融合网络,提出一种基于非完美信道状态信息的分布式鲁棒波束成形算法.首先,在卫星网络和高空平台网络分别采用多播技术和非正交多址技术服务多个用户的场景下,以最大化网络和速率为目标函数,并以满足各个用户速率需求为约束,建立卫星和高空平台发射功率受限为约束的优化问题.其次,在仅能获取用户非完美信道状态信息且仅能实现非完美连续干扰消除的情况下,采用S-procedure和连续凸逼近对非凸问题进行转化,并进一步提出基于拉格朗日对偶的分布式波束成形算法,以实现网络间的频谱共享.最后,计算机仿真表明所提分布式算法相比现有工作能以更低的信令开销获取更高的频谱效率.
A distributed robust beamforming(BF)algorithm was proposed to improve spectrum efficiency for an inte-grated satellite and high altitude platform(HAP)network.Specifically,for the scenario where satellite network and HAP network adopted multicast and NOMA to serve their respective multiple users,an optimization problem was formulated to maximize the sum rate,subject to the rate requirements of both satellite and aerial terminals,and the transmit power budget of satellite and aerial platforms.Then,by considering both the imperfect channel state information(CSI)and the imperfect successive interference cancellation(SIC),S-procedure and sequential convex approximation were adopted to transform the nonconvex problem,and then a distributed BF algorithm using Lagrange duality was proposed to enable the spectral coexistence.Finally,simulation results demonstrate that the proposed algorithm can achieve a similar perfor-mance yet at a lower signaling overhead compared with the other existing works.
王子宁;林敏;李菲;韩略;朱卫平
南京邮电大学通信与信息工程学院,江苏 南京 210003南京邮电大学通信与信息工程学院,江苏 南京 210003南京邮电大学通信与信息工程学院,江苏 南京 210003南京邮电大学通信与信息工程学院,江苏 南京 210003康考迪亚大学电子与计算机学院,蒙特利尔 QC H3G 1M8
电子信息工程
分布式波束成形非完美信道状态信息非正交多址非完美连续干扰消除
distributed beamformingimperfect channel state informationnon-orthogonal multiple accessimperfect successive interference cancellation
《通信学报》 2023 (12)
39-49,11
重点国际合作基金资助项目(No.61720106003)南京邮电大学引进人才科研启动基金资助项目(No.NY220111)江苏省研究生科研与实践创新计划基金资助项目(No.KYCX22_0959)The Key International Cooperation Research Project(No.61720106003),Talent Research Start-up Foundation of Nanjing University of Posts and Telecommunications(No.NY220111),The Postgraduate Research and Practice Innovation Program of Jiangsu Province(No.KYCX22_0959)
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