论文标题
在协调频谱底漆下对IRS辅助的旋转的概率强大优化
Probabilistically Robust Optimization of IRS-aided SWIPT Under Coordinated Spectrum Underlay
论文作者
论文摘要
这项研究考虑了在频谱底层设置中的关节传输/反映光束形成和功率拆分（JTRBP）优化问题，以使智能反射表面（IRS）二级发射机（ST）的智能反射表面（IRS）的发射汇率能够最小化，而不是ps-s-S-S-S-Swipt Interversive offersive offersive and Interevers crovesertions croveserress croveserress swist（Swipt）的质量（Swipt）的质量（swipt）。 （PR）。考虑到主发射器发送的IRS反射信号引起的PRS干扰。提出了协调的通道状态信息（CSI）采集协议。 Next, assuming availability at the ST of perfect CSI for all direct and IRS-cascaded transmitter--receiver channels, two penalty-based iterative algorithms are developed: an alternating minimization algorithm that involves semi-definite relaxation in JTBPS design and successive convex approximation in RB optimization, and a block coordinate descent algorithm that employs the Riemannian conjugate RB更新中的梯度算法。最后，设计了不完美的CSI下的断电受限的鲁棒设计。数值模拟突出了提议的基准策略的性能，证实了使用IRS的好处，并提供了宝贵的见解。
This study considers the Joint Transmit/Reflect Beamforming and Power Splitting (JTRBPS) optimization problem in a spectrum underlay setting, such that the transmit sum-energy of the intelligent reflecting surface (IRS)-aided secondary transmitter (ST) is minimized subject to the quality-of-service requirements of the PS-simultaneous wireless information and power transfer (SWIPT) secondary receivers and the interference constraints of the primary receivers (PR). The interference at the PRs caused by the reception of IRS-reflected signals sent by the primary transmitter is taken into account. A coordinated channel state information (CSI) acquisition protocol is proposed. Next, assuming availability at the ST of perfect CSI for all direct and IRS-cascaded transmitter--receiver channels, two penalty-based iterative algorithms are developed: an alternating minimization algorithm that involves semi-definite relaxation in JTBPS design and successive convex approximation in RB optimization, and a block coordinate descent algorithm that employs the Riemannian conjugate gradient algorithm in RB updates. Finally, an outage-constrained robust design under imperfect CSI is devised. Numerical simulations highlight the performance gains of the proposed strategies over benchmarks, corroborate the benefits of using an IRS, and provide valuable insights.
