认知地面用户共存的综合卫星地面中继网络鲁棒安全波束形成

Weixin Lu, K. An, Yang Zhang, Huayu Wang, Tao Liang
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引用次数: 0

摘要

研究了具有认知地面用户共存的综合卫星地面中继网络的鲁棒波束形成方案。由于卫星和预定终端之间的视线(LOS)不可用,多天线基站(BS)被用作中继。在假设只有不完全信道状态信息(CSI)可用的情况下,分别提出了基于松散鲁棒BF和紧密鲁棒BF两种方案。由于初始优化问题的非凸性和数学上的难解性,我们开发了一种重新表述和转换的方法。最后,验证了所提方案的正确性和有效性。
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Robust Secure Beamforming for Integrated Satellite Terrestrial Relay Networks Coexisting with Cognitive Terrestrial User
This paper investigates the robust beamforming (BF) schemes for an integrated satellite terrestrial relay network coexisting with a cognitive terrestrial user. Owing to the unavailable line-of-sight (LOS) between satellite and intended terminal, a multi-antenna base station (BS) is used to be a relay. By assuming that only the imperfect channel state information (CSI) is available, we propose two schemes based on loose robust BF and tight robust BF schemes, respectively. Due to the non-convexity and mathematically intractability of the initial optimization problem, we develop a reformulation and transformation approach. Finally, the validity and effectiveness of the proposed schemes are confirmed.
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