Bibliographic Details
| Title: |
基于速率分割的可重构智能表面辅助星地 融合网络鲁棒安全传输方案. (Chinese) |
| Alternate Title: |
Rate splitting based robust secure transmission scheme in RIS-assisted satellite-terrestrial integrated network. (English) |
| Authors: |
赵柏, 林敏, 肖圣杰, 程铭, 冯-帆, 杨绿溪 |
| Superior Title: |
Journal on Communication / Tongxin Xuebao; Dec2023, Vol. 44 Issue 12, p50-60, 11p |
| Abstract (English): |
Firstly, considering a reconfigurable intelligent surface (RIS) assisted satellite terrestrial integrated network, the satellite employed the rate splitting multiple access technique to serve multiple earth stations in the presence of multiple eavers-droppers(Eves), while the terrestrial network leveraged multicast technique to serve many ground users with the assist of RIS. Secondly, assuming that only the Eves' imperfect channel state information could be obtained, a joint optimization problem was formulated to minimize the total transmit power, while ensuring the quality-of-service requirement for all users, and adhering to intercept probabilistic constraints. To tackle this noncom vex problem, the S-procedure and the successive convex approximation approach were employed to convert the intercept probabilistic constraints into solved ones. And then a nuclear norm-based penalty function was employed to propose a robust joint algorithm to obtain the robust beamforming weight vectors and transmit power. Finally, the simulation results demonstrate the effectiveness and superiority of the proposed transmission scheme. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
首先, 考虑-个可重构智能表面 (RIS) 辅助的星地融合网络, 卫星采用速率分割多址技术服务多个地球 站, 而地面基站则在 RIS 的协助下利用多播技术服务多个地面用户, 同时还存在多个窃听者企图获取卫星的隐私信 号。其次, 在仅已知窃听者非完美信道状态信息的条件下, 以所有用户的通信质量要求及最大窃听概率为约束条件, 建立-个以最小化系统总发射功率为目标函数的联合优化问题。为了求解该非凸问题, 采用 S-procedure 和连续凸逼 近方法将复杂的窃听概率约束转化为可行的凸约束；利用基于核范数的惩罚函数方法提出一种鲁棒联合优化算法以 迭代求解波束成形权矢量和发射功率。最后, 计算机仿真结果验证了所提传输方案的有效性和优越性. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
