In the context of this research work, we study the so-called problem of full snapshot reconstruction in hybrid antenna array structures that are utilized in mmWave communication systems. It enables the recovery of the snapshots that would have been obtained if a conventional (non-hybrid) uniform linear antenna array was employed. The problem is considered at the receiver side where the hybrid architecture exploits in a novel way the antenna elements of a uniform linear array. To this end, the recommended scheme is properly designed so as to be applicable to overlapping and non-overlapping architectures. Moreover, the full snapshot recoverability is addressed for two cases, namely for time-varying and constant signal sources. Simulation results are also presented to illustrate the consistency between the theoretically predicted behaviors and the simulated results, and the performance of the proposed scheme in terms angle-of-arrival estimation, when compared to the conventional MUSIC algorithm and a recently proposed hybrid version of MUSIC (H-MUSIC).

在这项研究的背景下，我们研究了毫米波通信系统中使用的混合天线阵列结构中所谓的全快照重建问题。如果使用常规（非混合）均匀线性天线阵列，则可以恢复快照。在接收器端考虑了该问题，在该接收器中，混合架构以新颖的方式利用了均匀线性阵列的天线元件。为此，正确设计了推荐的方案，以适用于重叠和不重叠的体系结构。此外，针对两种情况解决了快照完全恢复性问题，即时变和恒定信号源。