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ZHANG, XUCHANG (author)The Constant Tone Extension (CTE) function introduced since Bluetooth Low Energy 5.1 greatly improves indoor Bluetooth Low Energy localization. These small, low-energy beacons transmit signals that Bluetooth-enabled devices can use to calculate proximity and positioning. This technology enables continuous navigation, location-based services,...master thesis 2023
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Prins, Nathan (author)The growing field of research into batteryless or intermittent systems has enabled Internet of Things applications that were previously impossible. For example, the FreeBie system recently introduced Bluetooth Low-Energy (BLE)<br/>to intermittent devices, making medium to long range bi-directional communication a reality for the first time....master thesis 2022
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Hendriks, John (author)This work presents the first robust connection mode for Bluetooth Low Energy on an energy harvesting sensor.master thesis 2022
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Barzgari, Mohammad (author), Ghafari, A. (author), Meghdadi, Masoud (author), Medi, Ali (author)This article presents the theory and implementation of a quadrature and differential RF front-end receiver. Combining balun, low-noise amplifier (LNA), mixer, and oscillator in a single stage, the proposed circuit, named the Blixator, is well suited for low-power applications. The baseband's transimpedance amplifier (TIA) also shares part of...journal article 2022
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van der Linden, Jorn (author), van der Heijde, Floris (author), van Remundt, Koen (author)The design, production and testing of the Bluetooth Ultrasimple Gamepad, or BUG for short, is laid out in this report. In the current market, most of the controllers available are multi-button controllers with analogue sticks. These controllers are expensive and can not be used for many web browser games which rely on a keyboard input to work....bachelor thesis 2021
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James, Javier (author)The company Kien 1 is developing Bluetooth Low Energy (BLE) speakers, consisting of a subwoofer and several satellite speakers. These subwoofer and satellite speakers will have a feature named Follow Me, which when enabled from a smartphone application, will play music only in the room where the user currently is. The BLE’s signals will...master thesis 2020
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CUI, Ye (author)Indoor positioning using Bluetooth addressed a great concern. The properties of narrowband usage, low energy consumption and universality on devices attract numerous customers and promote researchers to investigate potential of Bluetooth in indoor positioning field. It has already supported Angle-of-Arrival (AoA) and Angle-of-Departure (AoD) in...master thesis 2019
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Xenakis, Dimitris (author)This report constitutes the final product of my internship, where research was conducted on the differences of the Bluetooth Low Energy signal reception between 2 different phones (p1, p2) and eventually, the possibility of developing a translation function that could be used to predict the signal strength reception of p1, by considering the...student report 2018
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Yao, Lichen (author)In the next generation of Bluetooth standard, the Bluetooth SIG wants to incorporate multiple antenna systems into the Bluetooth Low Energy specification to enable direction-finding features. The features are aimed to improve the accuracy of off-the-shelf Asset Tracking Profile (ATP) and Indoor Positioning Service (IPS) including two modes –...master thesis 2018
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Pourmousavian, Naser (author), Kuo, Feng Wei (author), Siriburanon, Teerachot (author), Babaie, M. (author), Staszewski, R.B. (author)This paper proposes an ultra-low-voltage (ULV) fractional-N all-digital PLL (ADPLL) powered from a single 0.5-V supply. While its digitally controlled oscillator (DCO) runs directly at 0.5 V, an internal switched-capacitor dc-dc converter ``doubles'' the supply voltage to all the digital circuitry and particularly regulates the time-to...journal article 2018
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Gong, Jiang (author)Frequency translation is required in any modern wireless communication systems.<br/>This is in large part due to the fact that the modulated signal is easy to<br/>transmit in radio frequency in the form of an electromagnetic wave, and the demodulated signal is easy to process in the baseband frequency by a powerful digital processor. Frequency...master thesis 2017
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Verburg, Joseph (author), De Winter, Niels (author)During 9 weeks of investigation multiple solutions for implementing a communication module in a supermarket have been explored. These results led to three options which have been further researched. Bluetooth Low Energy (BLE), 433 MHz and ZigBee have been selected as the best communication protocols<br/>for sensor to gateway communication. Chips...bachelor thesis 2017
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Haagmans, Gaston (author)Since GPS tends to fail for indoor positioning purposes, alternative methods like indoor positioning systems (IPS) based on Bluetooth low energy (BLE) are developing rapidly. Generally, IPS are deployed in environments covered with obstacles such as furniture, (partition-) walls, people and electronics influencing the signal propagation. The...master thesis 2017
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Haagmans, G. G. (author), Verhagen, S. (author), Voûte, R.L. (author), Verbree, E. (author)Since GPS tends to fail for indoor positioning purposes, alternative methods like indoor positioning systems (IPS) based on Bluetooth low energy (BLE) are developing rapidly. Generally, IPS are deployed in environments covered with obstacles such as furniture, walls, people and electronics influencing the signal propagation. The major factor...conference paper 2017
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Kuo, Feng-Wei (author), Binsfeld Ferreira, S. (author), Chen, Huan-Neng Ron (author), Cho, Lan-Chou (author), Jou, Chewn-Pu (author), Hsueh, Fu-Lung (author), Madadi, I. (author), Tohidian, M. (author), Shahmohammadi, M. (author), Babaie, M. (author), Staszewski, R.B. (author)We present an ultra-low-power Bluetooth low-energy (BLE) transceiver (TRX) for the Internet of Things (IoT) optimized for digital 28-nm CMOS. A transmitter (TX) employs an all-digital phase-locked loop (ADPLL) with a switched current-source digitally controlled oscillator (DCO) featuring low frequency pushing, and class-E/F<sub>2</sub>...journal article 2017
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- Babaie, M. (author) doctoral thesis 2016
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Purushothaman, V.K. (author)This dissertation presents an ultra-low power (ULP) phase-domain RX architecture for the Bluetooth Low Energy (BLE) applications. By 2020, there will be up to 10 to 100 billion wireless sensor devices connected to internet-of-things (IoT)[1]. With the increasing demand on prolonging the battery lifetime, the power consumption of the RF...master thesis 2016
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IJntema, Wieger (author)Indoor localization is a topic that has been investigated for more than a decade. Yet, no single system exists that is widely adopted as the de facto localization standard. From a research perspective the goal is to obtain a solution that is general, simple and accurate. As the number of devices in the Internet of Things grow, a new set of...master thesis 2016
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Babaie, M. (author), Kuo, F (author), Chen, H (author), Cho, L (author), Jou, C. P. (author), Hsueh, F. L. (author), Shahmohammadi, M. (author), Staszewski, R.B. (author)We propose a new transmitter architecture for ultra-low power radios in which the most energy-hungry RF circuits operate at a supply just above a threshold voltage of CMOS transistors. An all-digital PLL employs a digitally controlled oscillator with switching current sources to reduce supply voltage and power without sacrificing its startup...journal article 2016
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Van der Ham, M. (author)Indoor positioning is becoming a hot topic in public areas that are used by large numbers of people. Finding people and assets in buildings has become more difficult because of the complexity and scale of today’s public space. On the subject of locating assets in the hospital the following use case is defined for this project. Positioning and...master thesis 2015
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