Indoor Localization System Using Commensal Radar Principle

Sardar, Santu; Sharan, B A G Ravi; Kumar, Prabhat; Kumar, Gautam; Khan, Mohammed Zafar Ali; Mishra, Amit Kumar

doi:10.23919/piers.2018.8597686

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…This method is useful for both indoor and outdoor scenario where the field of interest is small, i.e. 20 m as well as in indoor localization (Sardar et al 2018b). In Sardar, Mishra, and Khan (2017 a new method, CommSense, which uses LTE telecom infrastructure to sense the environment change has been proposed.…”

Section: Lte Commensal Radarmentioning

confidence: 99%

LTE-based passive radars and applications: a review

Kumar

Khan

et al. 2021

International Journal of Remote Sensing

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This paper provides an overview of the most recent passive radars based on long-term evolution (LTE). To begin, this paper investigates the various characteristics and requirements of 4 G LTE signals for radar, taking performance aspects such as range, velocity, range resolution, and velocity resolution into account. An ambiguity function analysis is performed on a measured LTE signal using the synchronization and reference signal components to evaluate key performance parameters such as Doppler and range characteristics. We also discuss how LTE passive radar can be used in a variety of applications. The detailed analysis of the LTE downlink signal, its structural overview, and the effect on cross-and self-ambiguity functions are all discussed. The paper investigates related standard development proposals, with a focus on performance evaluation criteria for existing passive radar technologies. As a result, this survey paper serves as a starting point for evaluating the performance of current and future passive radar innovations, including an emerging 5 G radar.

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Section: Lte Commensal Radarmentioning

confidence: 99%

LTE-based passive radars and applications: a review

Kumar

Khan

et al. 2021

International Journal of Remote Sensing

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CommSense: a communication infrastructure based sensing instrument for environment monitoring

Sardar

Mishra

Khan

2019

CSIT

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ECG-grained Cardiac Monitoring Using UWB Signals

Wang

Jin

et al. 2022

Proc. ACM Interact. Mob. Wearable Ubiquitous Technol.

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With the development of wireless sensing, researchers have proposed many contactless vital sign monitoring systems, which can be used to monitor respiration rates, heart rates, cardiac cycles and etc. However, these vital signs are ones of coarse granularity, so they are less helpful in the diagnosis of cardiovascular diseases (CVDs). Considering that electrocardiogram (ECG) is an important evidence base for the diagnoses of CVDs, we propose to generate ECGs from ultra-wideband (UWB) signals in a contactless manner as a fine-grained cardiac monitoring solution. Specifically, we analyze the properties of UWB signals containing heartbeats and respiration, and design two complementary heartbeat signal restoration methods to perfectly recover heartbeat signal variation. To establish the mapping between the mechanical activity of the heart sensed by UWB devices and the electrical activity of the heart recorded in ECGs, we construct a conditional generative adversarial network to encode the mapping between mechanical activity and electrical activity and propose a contrastive learning strategy to reduce the interference from noise in UWB signals. We build the corresponding cardiac monitoring system named RF-ECG and conduct extensive experiments using about 120,000 heartbeats from more than 40 participants. The experimental results show that the ECGs generated by RF-ECG have good performance in both ECG intervals and morphology compared with the ground truth. Moreover, diseases such as tachycardia/bradycardia, sinus arrhythmia, and premature contractions can be diagnosed from the ECGs generated by our RF-ECG.

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Indoor Localization System Using Commensal Radar Principle

Cited by 3 publications

References 3 publications

LTE-based passive radars and applications: a review

LTE-based passive radars and applications: a review

CommSense: a communication infrastructure based sensing instrument for environment monitoring

ECG-grained Cardiac Monitoring Using UWB Signals

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