发表机构
School of Information Science and Electronic Engineering, Shanghai Jiao Tong University; Hangzhou Institute of Technology, Xidian University; College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics（上海交通大学信息科学与工程学院; 西安电子科技大学杭州研究院; 南京航空航天大学电子与信息工程学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究全息曲率可重构孔径中阵列曲率与互耦的联合影响，建立分析框架并揭示其对频谱效率的非对称作用，强调评估弯曲MIMO链路时需联合考虑几何、耦合与噪声。
AI 中文摘要
本文研究阵列曲率与互耦（MC）对全息曲率可重构孔径的联合影响。我们开发了一个分析框架，用于表征空间相关性、考虑耦合的参考方向性和频谱效率。在小曲率条件下，我们建立了单元间距与耦合扰动及空间模式特征值之间的关系。仿真结果显示，在半球各向同性散射下，发射端与接收端阵列曲率在存在MC时表现出不对称的频谱效率变化，而它们在没有MC时的差异与零一致。基于第三代合作伙伴计划聚类延迟线-B信道的角度/功率分布以及有色噪声敏感性分析的结果进一步表明，曲率和接收端耦合的影响取决于传播角度分布和接收机噪声协方差。这些发现强调了在评估弯曲全息多输入多输出链路时，联合考虑阵列几何、互耦和接收机噪声的重要性。
英文摘要
This letter investigates the joint impact of array curvature and mutual coupling (MC) on holographic curvature-reconfigurable apertures. An analytical framework is developed to characterize spatial correlation, coupling-aware reference directivity, and spectral efficiency. Under the small-curvature regime, we establish a relation linking inter-element distances to coupling perturbations and spatial-mode eigenvalues. Simulation results reveal asymmetric spectral-efficiency variations between transmit- and receive-side array curvature with MC, while their no-MC difference is consistent with zero under hemispherical isotropic scattering. Results based on the 3rd Generation Partnership Project clustered delay line-B channel angular/power profile, together with colored-noise sensitivity analysis, further show that the effects of curvature and receive-side coupling depend on the propagation angular distribution and receiver-noise covariance. These findings highlight the importance of jointly accounting for array geometry, mutual coupling, and receiver noise when evaluating curved holographic multiple-input multiple-output links.
