Experimental analysis of IEEE 802.15.4a CSS ranging and its implications

Yoon, Chanmin; Cha, Hojung

doi:10.1016/j.comcom.2011.02.002

Cited by 15 publications

(7 citation statements)

References 31 publications

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“…Note that there are a number of DSL variants, ranging from basic Asymmetric DSL (ADSL), which supports up to 8 Mbps in the downstream and up to 640 kbps in the upstream, to ADSL2+ with a maximum theoretical download and upload speed of 24 Mbps and 1 Mbps respectively. Very-high-bitrate DSL (VDSL or VHDSL) provides faster data transmission over copper wires (up to 52 Mbps downstream and 16 Mbps/s [129]. The supported network topologies are star (single-hop), cluster-tree, and mesh (multi-hop).…”

Section: Wired Technologiesmentioning

confidence: 99%

The role of communication systems in smart grids: Architectures, technical solutions and research challenges

Ancillotti

Bruno

Conti

2013

Computer Communications

306

178

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Section: Wired Technologiesmentioning

confidence: 99%

The role of communication systems in smart grids: Architectures, technical solutions and research challenges

Ancillotti

Bruno

Conti

2013

Computer Communications

306

178

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“…The naive solution to the sensor fusion of the footmounted inertial navigation and the inter-agent ranging is simply using traditional Kalman filter measurement updates for the ranging [38]. However, the radio ranging errors are often far from Gaussian, often with heavy tails and nonstationary and spatially correlated errors [75][76][77][78][79][80]. This can cause unexpected behavior of many localization algorithms, and therefore, statistically more robust methods are desirable [79][80][81].…”

Section: B Robust and Low Computational Cost Sensor Fusionmentioning

confidence: 99%

Cooperative localization by dual foot-mounted inertial sensors and inter-agent ranging

Nilsson

Zachariah

Skog

et al. 2013

EURASIP J. Adv. Signal Process.

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The implementation challenges of cooperative localization by dual foot-mounted inertial sensors and inter-agent ranging are discussed, and work on the subject is reviewed. System architecture and sensor fusion are identified as key challenges. A partially decentralized system architecture based on step-wise inertial navigation and step-wise dead reckoning is presented. This architecture is argued to reduce the computational cost and required communication bandwidth by around two orders of magnitude while only giving negligible information loss in comparison with a naive centralized implementation. This makes a joint global state estimation feasible for up to a platoon-sized group of agents. Furthermore, robust and low-cost sensor fusion for the considered setup, based on state space transformation and marginalization, is presented. The transformation and marginalization are used to give the necessary flexibility for presented sampling-based updates for the inter-agent ranging and ranging free fusion of the two feet of an individual agent. Finally, the characteristics of the suggested implementation are demonstrated with simulations and a real-time system implementation.

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“…Typically, Nanotron has presented an positioning system based on CSS (chirp spread spectrum, a globally patented design of the company), and successfully used in open-pit mining, and its positioning products, nanoLOCs, are widely used in indoor positioning [ 18 ]. What’s more, [ 19 ] employs chirp in an RFID indoor positioning system, some experiments also have been done by researchers and obtained some useful results [ 18 , 20 , 21 ]. Another signal named absolute phase modulation (APM), which is based on non-linear chirp, has also been introduced to positioning systems [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

A Low-Ambiguity Signal Waveform for Pseudolite Positioning Systems Based on Chirp

Liu

Huang

Kou

et al. 2018

Sensors

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Signal modulation is an essential design factor of a positioning system, which directly impacts the system’s potential performance. Chirp compressions have been widely applied in the fields of communication, radar, and indoor positioning owing to their high compression gain and good resistance to narrowband interferences and multipath fading. Based on linear chirp, we present a modulation method named chirped pseudo-noise (ChPN). The mathematical model of the ChPN signal is provided with its auto-correlation function (ACF) and the power spectrum density (PSD) derived. The ChPN with orthogonal chirps is also discussed, which has better resistance to near-far effect. Then the generation and detection methods as well as the performances of ChPN are discussed by theoretical analysis and simulation. The results show that, for ChPN signals with the same main-lobe bandwidth (MLB), generally, the signal with a larger sweep bandwidth has better tracking precision and multipath resistance. ChPN yields slighter ACF peaks ambiguity due to its lower ACF side-peaks, although its tracking precision is a little worse than that of a binary offset carrier (BOC) with the same MLB. Moreover, ChPN provides better overall anti-multipath performance than BOC. For the ChPN signals with the same code rate, a signal with a larger sweep bandwidth has better performance in most aspects. In engineering practice, a ChPN receiver can be implemented by minor modifications of a BOC receiver. Thus, ChPN modulation shows promise for future positioning applications.

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Experimental analysis of IEEE 802.15.4a CSS ranging and its implications

Cited by 15 publications

References 31 publications

The role of communication systems in smart grids: Architectures, technical solutions and research challenges

The role of communication systems in smart grids: Architectures, technical solutions and research challenges

Cooperative localization by dual foot-mounted inertial sensors and inter-agent ranging

A Low-Ambiguity Signal Waveform for Pseudolite Positioning Systems Based on Chirp

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