An Ultralow Power Burst-Chirp UWB Radar Transceiver for Indoor Vital Signs and Occupancy Sensing in 40-nm CMOS

Liu, Yao‐Hong; Sheelavant, Sunil; Mercuri, Mario; Mateman, Paul; Babaie, Masoud

doi:10.1109/lssc.2019.2951423

Cited by 23 publications

(14 citation statements)

References 7 publications

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“…Therefore, it is a ''blind area'' in the range of 0-R1 in Figure 1. In the detection range of R1-R2, sampling and storage are performed every Ts time as one frame of signal [36]. The data in the range of R1-R2 sampled by a pulse is called fast-time signal.…”

Section: Harmonic Multiple Loop Detection (Hmld) Algorithmmentioning

confidence: 99%

Harmonic Multiple Loop Detection (HMLD) Algorithm for Not-Contact Vital Sign Monitoring Based on Ultra-Wideband (UWB) Radar

Zhang

et al. 2020

IEEE Access

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In this paper, the harmonic multiple loop detection (HMLD) algorithm for heart rate (HR) and respiration rate (RR) estimation with impulse radio ultrawideband (IR-UWB) radar is introduced. The algorithm includes two parts: one is the harmonic multiple discriminant principle and the other is the cyclic spectrum updating process. The harmonic multiple discriminant principle is used to detect whether the peak point in the fundamental frequency band is the true vital sign signal. The cyclic spectrum updating process can remove the error peak point according to the results obtained from the part one. In this algorithm, threshold setting is not needed and the estimation error caused by the erroneous threshold can be reduced. Only the fundamental and second harmonic frequencies are needed for HR and RR estimation, so the algorithm has strong environmental robustness and low requirement of radar hardwares. Compared with other algorithms, HMLD algorithm provides reasonable average error rates (4.95% and 5.06%) compared to real data from the oximeter in RR and HR detection. The real-time vital signs detection experiment shows that HMLD algorithm can not only detect the vital signs rate and record the historical curve in real time, but also detect the location information, which proves the validity of HMLD algorithm in real-time vital signs detection. INDEX TERMS Harmonic multiple loop detection, biomedical signal processing, impulse radio ultrawideband (IR-UWB) radar, heart rate (HR), respiration rate (RR).

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Section: Harmonic Multiple Loop Detection (Hmld) Algorithmmentioning

confidence: 99%

Harmonic Multiple Loop Detection (HMLD) Algorithm for Not-Contact Vital Sign Monitoring Based on Ultra-Wideband (UWB) Radar

Zhang

et al. 2020

IEEE Access

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“…Thus, researchers have come up with an idea to utilize the unused spectrum through smart sensing of available spectrum through various technologies such as cognitive radio (CR). The CR can effectively deal with the spectrum scarcity problems also; it permits secondary users (SUs) to use the unoccupied spectrum without affecting the transmission of primary users (PUs) [3]- [4]. In the meantime, the Federal Communication Commission (FCC) investigated the spectrum occupancy and found that a major portion of the available spectrum is unused due to the static allocation technique [5] [6] [7].…”

Section: Introductionmentioning

confidence: 99%

Spectrum Occupancy Measurement of Cellular Spectrum and Smart Network Sharing in Pakistan

Mirani¹,

Memon²,

Hussain³

et al. 2020

IJACSA

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In wireless communication, the radio spectrum is a very rare and precious resource that has currently become a major problem to efficiently exploit the underutilized band of the static allocated licensed band. Recently, the cognitive radio (CR) has emerged as a promising technology to overcome the spectrum crisis, in which, the licensed band can be utilized by the unlicensed user until and unless it does not affect the transmission of the licensed band. In this paper, the spectrum occupancy of three bands i.e. GSM 900, 1800 and 2100 bands have been measured through spectrum analyzer in the indoor and outdoor environment. The measured results of all the three bands have been calculated through MATLAB against the power spectral density versus frequency plots. Results have shown that the majority of the licensed band is underutilized. Therefore, the CR can play a pivotal role to efficiently utilize the unused spectrum and to overcome the cellular wireless spectrum crisis in Pakistan. The second part of this paper deals with the emerging concept of network sharing among mobile operators and its impacts on cost. Network sharing become the standard among mobile operators worldwide and so in Pakistan. Capital (CAPEX) as well as operational (OPEX) expenditure and rapid advancement in technology encouraged all operators to go for sharing business models. In Pakistan, all four mobile operators Jazz, Telenor, Zong, and Ufone are actively adopting this model to maintain EBITDA (earnings before interest, taxes, depreciation, and amortization). Mainly there are two types of network sharing, Passive infrastructure sharing, and active resource sharing. Passive network sharing is widely used in Pakistan among operators.

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“…In general, radar sensors can be categorized as narrowband Doppler radar [105], [116], frequency modulated continuous wave (FMCW) radar [106], [110], [114], [115], and ultra-wideband (UWB) radar [107]- [109], [111], [112], [118]. The block diagram of the single-frequency continuous wave (CW) radar is shown in Fig.…”

Section: Comparison Of Radar Sensor Architecturesmentioning

confidence: 99%

“…The major limitation of the CW radar is that it cannot realize the range detection; thus, it is unavailable to achieve the localization on the subject. The detection of the Doppler frequency shift has found usages in weather sensing, positioning, life detection for rescue, cardiopulmonary 6 Schematic of a burst-chirp UWB radar sensor [107], [119]. monitoring, and human vital signal detection such as heart rate, respiration rate, throat movement, and vessel flow, etc.…”

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confidence: 99%

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CMOS-integrated biosensor circuits and systems : FMCW radar sensor for noncontact multimodal vital signs monitoring and coherent photoacoustic sensor for non-invasive in vivo sensing and imaging

Fang¹

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and 3 conferences (2 ISCAS, 1 SOCC). I am listed as a corresponding author in 2 conferences (1 SOCC and 1 ISCAS). I am listed as a first student author in 2 conferences (1 ISSCC, 1 ISCAS) and 1 journal (JSSC). The thesis also contains material of two papers to be submitted to JSSC and ISSCC 2021, where the ideas on implementing the multi-channel coherent I/Q matched detection, implementing the beamforming on improving the signal-to-noise ratio (SNR) based on the mixed-signal system-on-chip design are illustrated.Chapter 3 is published as Zhongyuan Fang,

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An Ultralow Power Burst-Chirp UWB Radar Transceiver for Indoor Vital Signs and Occupancy Sensing in 40-nm CMOS

Cited by 23 publications

References 7 publications

Harmonic Multiple Loop Detection (HMLD) Algorithm for Not-Contact Vital Sign Monitoring Based on Ultra-Wideband (UWB) Radar

Harmonic Multiple Loop Detection (HMLD) Algorithm for Not-Contact Vital Sign Monitoring Based on Ultra-Wideband (UWB) Radar

Spectrum Occupancy Measurement of Cellular Spectrum and Smart Network Sharing in Pakistan

CMOS-integrated biosensor circuits and systems : FMCW radar sensor for noncontact multimodal vital signs monitoring and coherent photoacoustic sensor for non-invasive in vivo sensing and imaging

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