Experimental characterization of ranging in IEEE802.15.4a using a coherent reference receiver

Gigl, Thomas; Preishuber-Pfluegl, Josef; Arnitz, Daniel; Witrisal, Klaus

doi:10.1109/pimrc.2009.5450363

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…Next, the channel response is obtained by code despreading, and the ranging algorithm is applied on the magnitude of the complex baseband signal. A similar receiver structure can be found in [11] and [12].…”

Section: Receiver System Modelsmentioning

confidence: 83%

“…The LOS-SNR (LSNR) correlates very well with the ranging performance [11]. This section shows the relation between receiver input SNR, the energy of the despread LOS component over the noise spectral density E LOS /N 0 , and the receiver output SNR, written as LSNR.…”

Section: Snr Analysis and Maximal Operating Rangementioning

confidence: 94%

“…[6]), where 80% of the range estimations are within 1 m. The coherent receiver shows a working point LSNR WP = 9 dB (cf. [11]). Both working points are evaluated by extensive simulations.…”

Section: Input-to-output Snr Relationmentioning

confidence: 99%

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Maximal operating distance estimation for ranging in IEEE 802.15.4a Ultra Wideband

Gigl

Troesch

Preishuber-Pfluegl

et al. 2010

2010 7th Workshop on Positioning, Navigation and Communication

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The IEEE 802.15.4a standard for wireless sensor networks is designed for highly accurate ranging with impulse radio Ultra Wideband (UWB) signals. The standard is designed for coherent and non-coherent (energy detector) receivers, thus the choice of complexity is left to the implementer. In this paper, the maximal operating distance is analyzed for ranging, using a coherent receiver and an energy detector under FCC/EC regulations. The analysis is based on the working points of the receivers and a link budget calculation. The preamble of the standard is defined by several parameters, which influence the allowed FCC transmit power, the free space losses and thus the maximal operating distance. It is shown which code and channel combinations achieve the largest operating distance. The best performance is achieved by using long spreaded codes, where coherent receivers can achieve a maximal operating distance up to several thousand meters and energy detectors up to several hundred meters. I. INTRODUCTIONThe IEEE 802.15.4a standard [1] is a standard for wireless sensor networks with sub-meter ranging accuracy even in indoor environments. The physical layer is defined for bidirectional communications based on impulse radio ultrawideband signals. A two-way time-of-arrival ranging scheme is proposed. The standard allows the usage of high complexity coherent receivers and low-complexity energy detectors. The used preamble sequences show perfect autocorrelation properties for both receiver types [2].Energy detectors promise low-cost and low-power consumption. On the other hand, a performance loss [3] and more vulnerability to interfering signals occur [4]. Sub-Nyquist sampling is applicable for energy detectors, but limits on the other hand the ranging performance [5]. The IEEE 802.15.4a standard has a large number of selectable system parameters, which are important for the achievable ranging performance [6]. Their impact is studied in a signal-to-noise (SNR) analysis for a coherent receiver and an energy detector. The influence of the preamble parameters is also studied with respect to the maximal allowed transmit power according to the FCC [7] and EC [8] regulations. A detailed analysis about the FCC regulations for specific signaling schemes can be found in [9]. In this work, these concepts have been adopted to the preamble design of IEEE 802.15.4a. A detailed analysis shows the best preamble parameter setting for maximal allowed transmit energy. Furthermore, the different frequency

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Section: Receiver System Modelsmentioning

confidence: 83%

Section: Snr Analysis and Maximal Operating Rangementioning

confidence: 94%

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Maximal operating distance estimation for ranging in IEEE 802.15.4a Ultra Wideband

Gigl

Troesch

Preishuber-Pfluegl

et al. 2010

2010 7th Workshop on Positioning, Navigation and Communication

Self Cite

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“…Thus, the ranging performance can be characterized by the quality of the channel estimation at the receiver output. An appropriate performance metric is the receiver output SNR of the LOS component (LSNR), as it correlates strongly with the ranging performance [21]. It is defined as…”

Section: Problem Statementmentioning

confidence: 99%

“…At this working point, 80% of the range estimates are within 1 m. The coherent receiver shows a working point LSNR WP = 9 dB (cf. [21]). Both working points have been determined by extensive simulations (see [15]).…”

Section: Input-to-output Snr Relationmentioning

confidence: 99%

Ranging Performance of the IEEE 802.15.4a UWB Standard under FCC/CEPT Regulations

Gigl

Troesch

Preishuber-Pfluegl

et al. 2012

Journal of Electrical and Computer Engineering

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The IEEE 802.15.4a standard for wireless sensor networks is designed for high-accuracy ranging using ultra-wideband (UWB) signals. It supports coherent and noncoherent (energy detector) receivers, thus the performance-complexity-tradeoff can be decided by the implementer. In this paper, the maximum operating range and the maximum allowed pathloss are analyzed for ranging and both receiver types, under FCC/CEPT regulations. The analysis is based on the receiver working points and a link budget calculation assuming a frees-pace pathloss model. It takes into consideration the parameters of the preamble, which influence the transmit power allowed by the regulators. The best performance is achieved with the code sequences having the longest pulse spacing. Coherent receivers can achieve a maximum operating range up to several thousand meters and energy detectors up to several hundred meters.

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UWB locating system in semi-open space

Krasnov

Sharshavin

Baturin

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Simulation of the processing of navigation signals and estimation of the noise immunity of the receiver of an ultra-wideband positioning system in difficult conditions for receiving GNSS signals with dense taiga vegetation was performed. Experimental data were obtained on microwave interference and the conditions for the propagation of radio waves at real production facilities, including operating mountain taiga geophysical profiles.

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Experimental characterization of ranging in IEEE802.15.4a using a coherent reference receiver

Cited by 5 publications

References 5 publications

Maximal operating distance estimation for ranging in IEEE 802.15.4a Ultra Wideband

Maximal operating distance estimation for ranging in IEEE 802.15.4a Ultra Wideband

Ranging Performance of the IEEE 802.15.4a UWB Standard under FCC/CEPT Regulations

UWB locating system in semi-open space

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