The Experts below are selected from a list of 969 Experts worldwide ranked by ideXlab platform

Ulrich Ruckert - One of the best experts on this subject based on the ideXlab platform.

  • low cost Bluetooth communication for the autonomous mobile minirobot khepera
    International Conference on Robotics and Automation, 2005
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

  • ICRA - Low-cost Bluetooth Communication for the Autonomous Mobile Minirobot Khepera
    Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 1
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

M Grosseschallau - One of the best experts on this subject based on the ideXlab platform.

  • low cost Bluetooth communication for the autonomous mobile minirobot khepera
    International Conference on Robotics and Automation, 2005
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

  • ICRA - Low-cost Bluetooth Communication for the Autonomous Mobile Minirobot Khepera
    Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 1
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

Matthew S Reynolds - One of the best experts on this subject based on the ideXlab platform.

  • ble backscatter ultralow power iot nodes compatible with Bluetooth 4 0 low energy ble smartphones and tablets
    IEEE Transactions on Microwave Theory and Techniques, 2017
    Co-Authors: Joshua F Ensworth, Matthew S Reynolds
    Abstract:

    Backscatter communication promises significant power and complexity advantages for Internet of Things devices such as radio frequency identification (RFID) tags and wireless sensor nodes. One perceived disadvantage of backscatter communication has been the requirement for specialized hardware such as RFID readers to receive backscatter signals. In this paper, we show how backscatter signals can be designed for compatibility with the Bluetooth 4.0 low energy (BLE) chipsets already present in billions of smart phones and tablets. We present a prototype microcontroller-based “BLE-Backscatter” tag that produces bandpass frequency-shift keying modulation at 1 Mb/s, enabling compatibility with conventional BLE advertising channels. Using a +23-dBm equivalent isotropically radiated power continuous wave (CW) carrier source, we demonstrate a range of up to 13 m between the tag and an unmodified Apple iPad Mini as well as a PC with the Nordic Semiconductor nRF51822 chipset. With the tag 1 m from the receiver, we demonstrate a range of up to 30 m between the CW carrier source and the tag. In both cases, the existing Bluetooth Stack was used, with no modifications whatsoever to hardware, firmware, or software. The backscatter tag consumes only 1.56 nJ/b, over $6\times $ less than the lowest power commercial Bluetooth transmitters.

  • IEEE RFID - Every smart phone is a backscatter reader: Modulated backscatter compatibility with Bluetooth 4.0 Low Energy (BLE) devices
    2015 IEEE International Conference on RFID (RFID), 2015
    Co-Authors: Joshua F Ensworth, Matthew S Reynolds
    Abstract:

    In this work, we show how modulated backscatter signals can be crafted to yield channelized band-pass signals akin to those transmitted by many conventional wireless devices. As a result, conventional wireless devices can receive these backscattered signals without any modification (neither hardware nor software) to the conventional wireless device. We present a proof of concept using the Bluetooth 4.0 Low Energy, or BLE, standard widely available on smart phones and mobile devices. Our prototype backscatter tag produces three-channel bandpass frequency shift keying (FSK) packets at 1 Mbps that are indistinguishable from conventional BLE advertising packets. An unmodified Apple iPad is shown to correctly receive and display these packets at a range of over 9.4 m using its existing iOS Bluetooth Stack with no changes whatsoever. We create all three BLE channels by backscattering a single incident CW carrier using a novel combination of fundamentalmode and harmonic-mode backscatter subcarrier modulation, with two of the band-pass channels generated by the fundamental mode and one of the band-pass channels generated by the second harmonic mode. The backscatter modulator consumes only 28.4 pJ/bit, compared with over 10 nJ/bit for conventional BLE transmitters. The backscatter approach yields over 100X lower energy per bit than a conventional BLE transmitter, while retaining compatibility with billions of existing Bluetooth enabled smartphones and mobile devices.

Ulf Witkowski - One of the best experts on this subject based on the ideXlab platform.

  • low cost Bluetooth communication for the autonomous mobile minirobot khepera
    International Conference on Robotics and Automation, 2005
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

  • ICRA - Low-cost Bluetooth Communication for the Autonomous Mobile Minirobot Khepera
    Proceedings of the 2005 IEEE International Conference on Robotics and Automation, 1
    Co-Authors: M Grosseschallau, Ulf Witkowski, Ulrich Ruckert
    Abstract:

    This paper presents a low-cost Bluetooth communication for autonomous mobile minirobots. The interfacing of the Bluetooth hardware is done by a simple UART connection, which makes the approach easily portable. Using ASCII commands and events, which are exchanged over this serial link, the Bluetooth operations can be controlled and monitored. Since internal Bluetooth Stack operations are concealed, no deeper knowledge of the Bluetooth technology is necessary to utilize this wireless communication. These features make the presented approach perfectly suited for the integration into minirobots like the Khepera, where computational power and spatial resources are strictly limited.

Tamer Nadeem - One of the best experts on this subject based on the ideXlab platform.

  • blink making the case for Bluetooth open source Stack
    2018 Wireless Days (WD), 2018
    Co-Authors: Ahmed Salem, Tamer Nadeem
    Abstract:

    Bluetooth is the de facto for IoT communication and the most prominent communication technology for smart homes and smart cities. Despite its design for small devices, e.g., computer mice, it evolved to support a wide range of applications. However, it still carries limitations like low data rate, inefficient device discovery, limited range, and interference. Addressing these aspects is impossible for the research community as Bluetooth core specifications are locked on hardware chips. In this work, we propose BLINK, a modified version on Bluetooth v4.0 that supports multicast communication elevating the data rate within a Bluetooth piconet. First, we provide an open source Bluetooth Stack implementation to the research community. Second, we introduce multicasting to Bluetooth piconets through extending the set of packet formats. Third, we customize the Bluetooth timing to schedule an interference free communication of multicast streams between piconet devices. Fourth, we evaluate BLINK on a testbed of 4 devices and show that data exchange rate was enhanced by 1.5–3 folds.

  • Wireless Days - BLINK: Making the case for Bluetooth open source Stack
    2018 Wireless Days (WD), 2018
    Co-Authors: Ahmed Salem, Tamer Nadeem
    Abstract:

    Bluetooth is the de facto for IoT communication and the most prominent communication technology for smart homes and smart cities. Despite its design for small devices, e.g., computer mice, it evolved to support a wide range of applications. However, it still carries limitations like low data rate, inefficient device discovery, limited range, and interference. Addressing these aspects is impossible for the research community as Bluetooth core specifications are locked on hardware chips. In this work, we propose BLINK, a modified version on Bluetooth v4.0 that supports multicast communication elevating the data rate within a Bluetooth piconet. First, we provide an open source Bluetooth Stack implementation to the research community. Second, we introduce multicasting to Bluetooth piconets through extending the set of packet formats. Third, we customize the Bluetooth timing to schedule an interference free communication of multicast streams between piconet devices. Fourth, we evaluate BLINK on a testbed of 4 devices and show that data exchange rate was enhanced by 1.5–3 folds.

  • WF-IoT - Exposing Bluetooth lower layers for IoT communication
    2016 IEEE 3rd World Forum on Internet of Things (WF-IoT), 2016
    Co-Authors: Ahmed Salem, Tamer Nadeem
    Abstract:

    Internet of Things (IoT), penetrating through our daily life, is looking to minimize the overhead in all of its modules. Bluetooth shows up as an efficient candidate to handle the communication part. In this work, we propose BOSS: a Bluetooth Open Source Stack, which grants developers access to low level Bluetooth layers. Bluetooth firmware is currently a black box controlled by manufacturers without no possible was to get access to its modules, let alone modifying them like other IEEE standards, e.g., Wi-Fi. This negates the efficient nature IoT systems should have. We design and implement BOSS to adhere with Bluetooth standards while providing the community with a reliable open source version of the Bluetooth Stack. In this work, we present the challenges to realize the unique Bluetooth features and how to address them, in addition to implementing two basic features, i.e., peer location and packet transmission.