SideSense: Robust Physiological Motion Detection via mmWave Joint Communication and Sensing Systems With Multiple Beams

A 28-GHz multibeam joint communication and sensing system called SideSense is presented, in which a line-of-sight (LoS) beam is used to maintain reliable communication, while other sensing beams are used to enhance physiological motion detection. SideSense decodes the motion frequency and shape from...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques pp. 1 - 13
Main Authors Ishrak, Mohammad Shadman, Sameera, Jannatun Noor, Yang, Alvin, Pan, Yanjun, Zheng, Yao, Boric-Lubecke, Olga, Lubecke, Victor M.
Format Journal Article
LanguageEnglish
Published IEEE 2025
Subjects
Array signal processing
Biosensors
channel state information (CSI) amplitude
future generation (FutureG) wireless
Hardware
millimeter wave (mmWave)
Millimeter wave communication
Monitoring
Motion detection
multiple beam
OFDM
Phased arrays
Physiology
Protocols
Sensors
vital signs sensing
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Summary:A 28-GHz multibeam joint communication and sensing system called SideSense is presented, in which a line-of-sight (LoS) beam is used to maintain reliable communication, while other sensing beams are used to enhance physiological motion detection. SideSense decodes the motion frequency and shape from the channel state information (CSI) by first tuning the gain ratio and phase differences between the LoS communication beam and non-LoS (NLoS) beam to maximize the sensing signal-to-noise ratio (SSNR) without significantly degrading the communication channel capacity (CCC). Analytical results based on a bistatic model are presented to show a gain ratio of around 1 and a phase difference of 90° or 270°, which are ideal for optimizing both SSNR and CCC. Experiments based on an array of phased array (APA) beamformers and orthogonal frequency-division multiplexing (OFDM) waveforms with phantom and human subjects are presented to validate the performance of SideSense. Results show that SideSense can improve SSNR by 84% while reducing CCC by 35%, an acceptable decrease within the normal operational parameters of a millimeter-wave (mmWave) communication system, which would not trigger a link reestablishment procedure, e.g., communication beam realignment.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2025.3589906