Towards Optimal Energy Harvesting Receiver Design in MIMO Systems

• Main Authors: Kariminezhad, Ali, Sezgin, Aydin
• Format: Conference Proceeding
• Language: English
• ISSN: 2166-9589
• DOI: 10.1109/PIMRC.2019.8904405

In this paper, we investigate a multiple-input multiple-output (MIMO) system with simultaneous information detection (ID) and energy harvesting (EH) receiver. This point-to-point system operates in the vicinity of active interfering nodes. The receiver performs power splitting where a portion of received signal undergoes analog energy harvesting circuitry. Further, the information content of the other portion is extracted after performing digital beamforming. In this MIMO system, information carrier eigen-modes are not necessarily the eigen-modes with the strongest energy level. Hence, it is beneficial to perform independent beamforming at the receiver of MIMO-P2P channel. Here, we utilize a hybrid analog/digital beam-forming for the purpose of simultaneous ID and EH in such scenarios. This design, provides extra design degrees-of-freedom in eigen-mode selection for ID and EH purposes independently. Worst-case performance of this receiver structure is discussed. Finally, its benefits are compared to the classical receiver structure and the gains are highlighted.