Applications of MIMO radar in vital signs detection

This paper reports a comprehensive review of the latest developments in vital signs detection and human localization using multiple-input-multiple-output (MIMO) technology. Wireless motion and vital signs detection is an outstanding research area aimed at monitoring the health status of human subjects and detecting their presence in various environments with minimal concern. MIMO radars show several interesting advantages over conventional single-input-single-output architectures, mainly related to angle detection capabilities and increased signal to noise ratio. Continuous monitoring of vital signs, such as respiration and heartbeat, plays a crucial role in early detection and even prediction of conditions that may affect the wellbeing of the patient. Sensing vital signs can be categorized into: contact-based techniques and contactless based techniques. Conventional clinical methods of detecting these vital signs require the use of contact sensors, which may not be practical for long duration monitoring and less convenient for repeatable measurements.

Keywords:

heart rate , radars , MIMO radar , vital sign , human localization