scholarly journals Large-scale bound constrained optimization based on hybrid teaching learning optimization algorithm

2021 ◽  
Vol 60 (6) ◽  
pp. 6013-6033
Author(s):  
Wali Khan Mashwani ◽  
Habib Shah ◽  
Manjit Kaur ◽  
Maharani Abu Bakar ◽  
Miftahuddin Miftahuddin
Keyword(s):  
Constrained Optimization ◽  
Optimization Algorithm ◽  
Large Scale ◽  
Hybrid Teaching ◽  
Bound Constrained Optimization ◽  
Teaching Learning

scholarly journals Estimation of Human Body Vital Signs Based on 60 GHz Doppler Radar Using a Bound-Constrained Optimization Algorithm

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2254 ◽  
Author(s):  
Ting Zhang ◽  
Julien Sarrazin ◽  
Guido Valerio ◽  
Dan Istrate
Keyword(s):  
Constrained Optimization ◽  
Human Body ◽  
Optimization Algorithm ◽  
Large Scale ◽  
Doppler Radar ◽  
Body Motion ◽  
Parallel Optimization ◽  
Physiological Data ◽  
60 Ghz ◽  
Bound Constrained Optimization

In this study, a bound-constrained optimization algorithm is applied for estimating physiological data (pulse and breathing rate) of human body using 60 GHz Doppler radar, by detecting displacements induced by breathing and the heartbeat of a human subject. The influence of mutual phasing between the two movements is analyzed in a theoretical framework and the application of optimization algorithms is proved to be able to accurately detect both breathing and heartbeat rates, despite intermodulation effects between them. Different optimization procedures are compared and shown to be more robust to receiver noise and artifacts of random body motion than a direct spectrum analysis. In case of a large-scale constrained bound, a parallel optimization procedure executed in subranges is proposed to realize accurate detection in a reduced span of time.

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