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1	INEXPENSIVE UHF TRANSCEIVER LEVERAGING COTS COMPONENTS Chiaventone, Owen, Avola, Kyle, Tuschhoff, Stetson 10 1900 (has links) This paper describes the design of an inexpensive UHF transceiver which leverages some of the recently developed commercial off-the-shelf (COTS) components. The initial goal is to implement digital voice transmit and receive function, although the design can accommodate a wide range of digital communication and telemetry applications. The handheld transceiver transmits 5 watts of power in the 430-435 MHz UHF band. A 1.2 kHz wide GFSK modulation format is used, generated by a Silicon Labs radio chip. The recently released Raspberry Pi Zero processor implements a low bit rate audio coding which conforms to the Codec2 standard. The transceiver fits in a 3 cm x 8 cm x 14 cm volume. It is powered by two 18650 lithium ion cells, and draws approximately 1 watt of power during receive, and 6 watts during transmission. UHF GFSK Codec2 DSP
2	Bluetooth Enhanced Data Rate Baseband Modeling and Implementation Zou, Lei January 2006 (has links) <p>The main issue of this thesis is making the behaviour model of Bluetooth EDR (enhanced data rate) baseband signal processing. This Bluetooth baseband project is part of the soft defined radio project at electrical engineering department, Linköping University.</p><p>In this project, both the basic rate and EDR model were built and simulated. The GFSK and π/4 DQPSK digital modulation and demodulation were implemented in C code. The BER was tested to evaluate the demodulation results. Furthermore, the error correction (FEC) and the error checking (HEC,CRC) were also implemented according to the Bluetooth standards. The CRC flag was detected to test the payload demodulation results.</p><p>Especially, GFSK and π/4 DQPSK specifications have to be combined with each other at sample rate of ADC.</p><p>Finally, the basic rate and EDR model were simulated to measure the BER and CRC performance.</p><p>From the simulation results, the receiver filter, synchronization and channel condition were three key points in this Bluetooth EDR system implementation.</p><p>So we get further understanding about the Bluetooth system specification and DSP implementation methods.</p> Bluetooth Baseband GFSK π/4 DQPSK BER CRC Filters Synchronization Channel DSP Computer engineering Datorteknik
3	Bluetooth Enhanced Data Rate Baseband Modeling and Implementation Zou, Lei January 2006 (has links) The main issue of this thesis is making the behaviour model of Bluetooth EDR (enhanced data rate) baseband signal processing. This Bluetooth baseband project is part of the soft defined radio project at electrical engineering department, Linköping University. In this project, both the basic rate and EDR model were built and simulated. The GFSK and π/4 DQPSK digital modulation and demodulation were implemented in C code. The BER was tested to evaluate the demodulation results. Furthermore, the error correction (FEC) and the error checking (HEC,CRC) were also implemented according to the Bluetooth standards. The CRC flag was detected to test the payload demodulation results. Especially, GFSK and π/4 DQPSK specifications have to be combined with each other at sample rate of ADC. Finally, the basic rate and EDR model were simulated to measure the BER and CRC performance. From the simulation results, the receiver filter, synchronization and channel condition were three key points in this Bluetooth EDR system implementation. So we get further understanding about the Bluetooth system specification and DSP implementation methods. Bluetooth Baseband GFSK π/4 DQPSK BER CRC Filters Synchronization Channel DSP Computer Engineering Datorteknik
4	Bezdrátový přenos signálu rozhraní DMX512 / Wireless Signal Transmission of DMX512 Interface Polóni, Pavol January 2009 (has links) Master's thesis deals with design and implementation of a system for wireless transmission of DMX signal 512, which is primarily designed for the management of lighting effects. Its electrical specification is based on the EIA485 standard. Text of the work describes the design stage. First is the issue of implied actual protocol DMX 512 or EIA485. Next sign on selecting a suitable architecture for wireless transmission, management and compilation of the block diagrams. Describes the operation of the component selection and circuit implementation of the scheme, which is using the DPS Eagle compiled. In conclusion, this work is to evaluate the results of the proposed system and showing the way to its further development so that it can be realistically implemented in practice.
5	Analog-to-digital interface design in wireless receivers Xia, Bo 12 April 2006 (has links) As one of the major building blocks in a wireless receiver, the Analog-to-Digital Interface (ADI) provides link and transition between the analog Radio Frequency (RF) frontend and the baseband Digital Signal Processing (DSP) module. The rapid development of the radio technologies raises new design challenges for the receiver ADI implementation. Requirements, such as power consumption optimization, multi-standard compatibility, fast settling capability and wide signal bandwidth capacity, are often encountered in a low voltage ADI design environment. Previous research offers ADI design schemes that emphasize individual merit. A systematic ADI design methodology is, however, not suffciently studied. In this work, the ADI design for two receiver systems are employed as research vehicles to provide solutions for different ADI design issues. A zero-crossing demodulator ADI is designed in the 0.35Âµm CMOS technology for the Bluetooth receiver to provide fast settling. Architectural level modiﬁcation improves the process variation and the Local Oscillation (LO) frequency offset immunity of the demodulator. A 16.2dB Signal-to-Noise Ratio (SNR) at 0.1% Bit Error Rate (BER) is achieved with less than 9mW power dissipation in the lab measurement. For ADI in the 802.11b/Bluetooth dual-mode receiver, a conﬁgurable time-interleaved pipeline Analog-to-Digital-Converter (ADC) structure is adopted to provide the required multi-standard compatibility. An online digital calibration scheme is also proposed to compensate process variation and mismatching. The prototype chip is fabricated in the 0.25Âµm BiCMOS technology. Experimentally, an SNR of 60dB and 64dB are obtained under the 802.11b and Bluetooth receiving modes, respectively. The power consumption of the ADI is 20.2mW under the 802.11b receiving mode and 14.8mW under the Bluetooth mode. In this dissertation, each step of the receiver ADI design procedure, from system level optimization to the transistor level implementation and lab measurement, is illustrated in detail. The observations are carefully studied to provide insight on receiver ADI design issues. The ADI design for the Ultra-Wide Band (UWB) receiver is also studied at system level. Potential ADI structure is proposed to satisfy the wide signal bandwidth and high speed requirement for future applications. analog-to-digital converter demodulator low pwer consumption circuit wireless receiver analog cmos circuit Bluetooth IEEE 802.11b UWB data modulation circuit verification GFSK CCK PAM
6	Ein alter Hut Taubner, Stefan, Fehser, Stefan, Henz, Florian, Seliger, Robert, Hoffmann, Sabine, Hofmann, Kristin, Träger, Christian 19 January 2015 (has links) (PDF) In diesem Reader sollen die studentischen Verbindungen deutschen Typs unter die Lupe genommen und ein kritischer Blick auf die Dresdner Verbindungslandschaft geworfen werden. Der Reader besteht dabei aus einem allgemeinen Teil über studentische Verbindungen, in dem unter anderem die Rolle beim Aufstieg des Nationalsozialismus beleuchtet wird, und einer genauen Betrachtung der einzelnen Dresdner Verbindungen und deren Vernetzung untereinander.Die Lebenswelt studentischer Verbindungen hat den Charakter einer Parallelgesellschaft, die ihre ganz eigene Sprache besitzt. Typisches Vokabular, welches auch zum Verstehen der Texte gebraucht wird, findet sich im Glossar erklärt. verbindungen dresden kritik korporationen burschenschaften corps Burschi Reader Cheruscia Teutonia Mensur Arion Fux GFSK Chursachsen Cervidia Silvania Maria -Josefa Altsachsen Abraxas-Rheinpreußen Salamandria Tradition Studentenverbindung Studentenverbindung student association ddc:371.85 rvk:AL 48700 rvk:NZ 14720 rvk:NZ 14820 Dresden Studentenverbindung Geschichte
7	Ein alter Hut: Kritik studentischer Verbindungen in Dresden Taubner, Stefan, Fehser, Stefan, Henz, Florian, Seliger, Robert, Hoffmann, Sabine, Hofmann, Kristin, Träger, Christian January 2011 (has links) In diesem Reader sollen die studentischen Verbindungen deutschen Typs unter die Lupe genommen und ein kritischer Blick auf die Dresdner Verbindungslandschaft geworfen werden. Der Reader besteht dabei aus einem allgemeinen Teil über studentische Verbindungen, in dem unter anderem die Rolle beim Aufstieg des Nationalsozialismus beleuchtet wird, und einer genauen Betrachtung der einzelnen Dresdner Verbindungen und deren Vernetzung untereinander.Die Lebenswelt studentischer Verbindungen hat den Charakter einer Parallelgesellschaft, die ihre ganz eigene Sprache besitzt. Typisches Vokabular, welches auch zum Verstehen der Texte gebraucht wird, findet sich im Glossar erklärt.:Teil 1 Studentische Verbindungen- ein alter Hut? 7 Studentische Verbindungen und Nationalsozialismus 13 Elite sein - Ziel korporationsstudentischer Erziehung 20 Exkurs: Deutsche Burschenschafter aus Chile? 24 Teil 2 Studentische Verbindungen in Dresden 25 Corps Teutonia 28 Interview mit ehem. Teutonia-Bewohner 30 Aachen- Dresdner Burschenschaft Cheruscia: 33 AMV Arion 37 Interview mit Arionmitglied 38 KDStV Chursachsen 41 Turnerschaft Germania 43 Gesellschaft zur Förderung studentischer Kultur (GFSK) 45 Jagdcorporation Cervidia 49 Corps Silvania 51 A.D.V. Regia Maria -Josefa zu Dresden 53 Verein Deutscher Studenten Dresden 55 K.St.V. Abraxas-Rheinpreußen 57 Corps Altsachsen 59 Burschenschaft Salamandria 61 Übersichtsplan der Dresdner Verbindungen 63 Glossar 64 Weiterführende Literatur 71 info:eu-repo/classification/ddc/371.85 ddc:371.85 Dresden; Studentenverbindung; Geschichte Studentenverbindung, student association

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