Performance of Ultralow-Power IR-UWB Correlator Receivers for Highly Accurate Wearable Human Locomotion Tracking and Gait Analysis Systems

Shaban, Heba; El-Nasr, Mohamad Abou; Buehrer, R. Michael

doi:10.1109/glocom.2009.5426230

Cited by 15 publications

(19 citation statements)

References 27 publications

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“…We defined optimum design parameters and bounds on the system performance, studied the link budget, and defined the target SNR assuming coherent detection based on optimal templates. Furthermore, in [7], we proposed using real suboptimal-template based detectors for human locomotion tracking systems, and derived the improved Ziv-Zakai lower (ZZLB) bound on the system performance. In this article, we extend the analysis to include complex suboptimal template based detectors, also known as quadrature analog correlators (QAC), which have been proposed in the literature to overcome the high sensitivity to timing mismatch associated with common matched filters (MF).…”

Section: Introductionmentioning

confidence: 99%

Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks

2011

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In this article, we propose and study the performance of low-power impulse radio ultra-wideband correlation-based time-of-arrival (TOA) estimators for body area networks. In particular, we study and compare the signal-to-noise-ratio degradation of TOA correlatorbased estimators assuming optimal, real and complex suboptimal sinusoidal templates. Moreover, we study the improved Ziv-Zakai lower bound for complex suboptimaltemplate based TOA estimators. Then, we study and compare the performance of practical correlator-based TOA estimators using optimal, real and complex suboptimal sinusoidal templates via simulations in the IEEE 802.15.6a UWB on-body channel model as well as actual on-body measurements. The performance of real suboptimal template-based estimators approaches the performance of optimal TOA estimators based on simulations and actual measurements. We show that low-power is traded for a minimal performance loss.

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Section: Introductionmentioning

confidence: 99%

Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks

2011

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“…The derivation of P min (z) depends on the receiver's a priori knowledge about the multi-path phenomena [10]. For suboptimal templates, the minimum attainable probability of error is [18]:…”

Section: Toa Lower-boundsmentioning

confidence: 99%

Reference Range Correlation (Rrcr) Ranging and Performance Bounds for on-Body Uwb-Based Body Sensor Networks

Shaban¹,

El-Nasr²,

Buehrer³

2011

PIER B

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Abstract-In this paper, we propose a reference range correlationbased (RRcR) ranging technique suitable for low-power on-body wireless body sensor networks (WBSNs) via ultra wideband (UWB) radios. The proposed technique is based on the presence of reference nodes, and is assumed to have line-of-sight (LOS) links. We show that the performance of the proposed technique outperforms matchedfiltering-based time-of-arrival (MF-TOA) estimators with no a priori and with perfect channel knowledge. We further show that increasing the number of reference node up to twenty provides significant enhancement in the performance traded for higher overall power consumption. Then, we study the effect of timing-misalignment on the Ziv-Zakai lower bound (ZZLB), and provide numerical results. The presented results are based on simulations in the IEEE 802.15.6a onbody-to-on-body channel (CM3) in the UWB band as well as actual measurements.

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“…Considering binary EC-PPM, with a transmitted pulse p(t), the transmitted signal is composed of N s time shifted pulses with 2≤M<N s and each signal is identified by a sequence of cyclic shifts of an m sequence of length N s (Shaban et al, 2009). The optimal template is (Hu and Bueaulieu, 2005) Equation (3):…”

Section: Performance In Awgn Channelmentioning

confidence: 99%

“…However, their performance is highly suboptimal as compared to coherent detectors. Recently, low-power suboptimal template-based correlator receivers have been proposed as an alternate candidate that provides an approaching performance to optimal detectors with low-power consumption (Shaban et al, 2009;.…”

Section: Introductionmentioning

confidence: 99%

Ber Performance and Data Throughput of Sinusoidal Template- Based Impulse-Radio Ultra Wideband Receivers for Wireless Body Area Networks

El-Nasr¹,

Shaban²

2013

American Journal of Applied Sciences

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Windowed sinusoidal template-based correlator receivers are good candidates for high-data rate low-power Ultra Wideband (UWB) systems. Their performance approaches the performance of optimal detectors and provides low-power consumption. However, the ultra short pulses of UWB technology makes it sensitive to timing-errors. In this paper, the Bit-Error-Rate (BER) performance and maximum allowable data throughput of Equally-Correlated Pulse Position Modulation (EC-PPM) modulation scheme in the presence of timingjitter are studied and compared for low-power sinusoidal template based correlator receivers. Additive White Gaussian Noise (AWGN), Nakagami-m fading, industrially accepted on-body IEEE 802.15.6a and actual onbody channels are considered. Numerical results show that the maximum SNR penalty when using sinusoidal templates is ≈2 dB for the same BER and the corresponding data-throughput degradation is 5 Mbps.

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Performance of Ultralow-Power IR-UWB Correlator Receivers for Highly Accurate Wearable Human Locomotion Tracking and Gait Analysis Systems

Cited by 15 publications

References 27 publications

Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks

Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks

Reference Range Correlation (Rrcr) Ranging and Performance Bounds for on-Body Uwb-Based Body Sensor Networks

Ber Performance and Data Throughput of Sinusoidal Template- Based Impulse-Radio Ultra Wideband Receivers for Wireless Body Area Networks

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