The CPR3 is a handheld radar device. This device is capable of detecting movement through walls and is mainly intended for police and military use. It is equipped with a Bluetooth module that enables remote control. To enhance the mobility of the users that utilize this functionality, a Windows Mobile application is developed. This application is meant to replace the already existing Windows application used for remotely controlling these radar devices. Furthermore, a small evaluation of the framework used for the development of the application is performed. Also, a theoretical performance analysis is performed on the ZigBee standard. The goal is to find out whether or not ZigBee is a suitable replacement technology for Bluetooth as the primary means of communication within the system.

Genom hela arbetet har enkelhet och användbarhet varit ledorden. Detta för att man ska kunna implementera tjänster för en relativt liten målgrupp utan att behöva göra större investeringar. I linje med detta har möjligheter för att kunna erbjuda tjänsten till en större målgrupp och därmed få ned kostnaden per användare eftersökts. Rapporten börjar med en studie av 3G, WLAN och Bluetooth för att läsaren ska få en grund i de tekniker på vilka tjänsterna skulle kunna implementeras. Sedan diskuteras dagens tjänster och vilka önskemål om tjänster som framkommit från diskussioner med olika parter. Slutligen exemplifieras ett antal tjänster som skulle kunna tillämpas på dagens tekniker. Efter att ha läst rapporten skall läsaren ha fått en uppfattning hur mobila tjänster med hög överföringshastighet bör utformas för att underlätta kommunikation för funktionshindrade.

Bluetooth is a low-cost, low-power and short-range wireless communication technology, which operates in the global unlicensed 2.4GHz ISM band. Recently many people have paid close attention to do a lot of relevant research and product development on it. In addition to the scatternet formation problem, two major issues of Bluetooth, scheduling and routing, also greatly interest the researchers. In this paper, we propose new scatternet topology architecture for Bluetooth networks, called multi-ring scatternet. The scatternet formation and packet routing method are presented. The self-routing property of multi-ring scatternet makes its routing method efficient and low overhead. Comparing to the Bluetree scatternet, the proposed scatternet is more reliable and relieves the bottleneck at root nodes. As compared with the BlueRing scatternet, it reduces the network diameter and average routing path. The simulation results reveal that our multi-ring scatternet topology gains better performance by the three metrics of number of piconets, average routing path length and throughput.

Bluetooth Piconet has become an important area of research and development in the short-range wireless network system. It is well known that bluetooth causes disturbing interference since sharing frequency band is used in communication channels. This thesis proposes a new and efficient method to solve the retransmission problem that occurs in wireless interference. The proposed method is developed based on average transmit times and margin of grouping to find out the grouping rule of the Bluetooth Piconet. A computer simulation shows in this thesis that the performance of the proposed group assignment approach is much bettter than can be obtained by other conventional means. Furthermore, in order to reduce retransmit time and save time-slot, a new packet combine retransmit method is developed based on different reliability of packet's transmit conditions in this thesis. As a consequence, for total duty cycle and time slots, the proposed packet combine retransmit method obtains a better performance than the conventional retransmit method.

Bluetooth is an emerging technology to build a solution for providing short range, low power, low cost, and ubiquitous wireless environments. In this paper we propose a algorithm for asynchronous data traffic at the Medium Access Control (MAC) layer to meet Bluetooth characteristic and compare with other scheduling algorithms. The algorithm, named Efficient Utilization Polling (EUP), uses a single bit of the payload packet header as supplied knowledge of queues of slaves to the master to dynamically adapt the polling intervals. We also propose a differentiation mechanism, named Shifting Polling Window (SPW), which is based on EUP and differentiates throughput between different classes and still keeps the link utilization almost the same.

In this paper we propose a distributed algorithm to construct a scatternet for multi-hop ad hoc networks of Bluetooth devices. This algorithm is fully distributed and does not require the nodes in the networks being in-range(i.e., each pair of nodes in the network may be unable to communicate with each other directly). The role-selection process in existing scatternet formation mostly uses the strategy of message exchange and comparing their weights like IDs or power strength. This results in a large amount of control messages to be sent and a longer scatternet formation time. In our algorithm, the role selection procedure is simple. Nodes can decide their role by a randomly generated counter rather than their ¡¥weights¡¦. According to the proposed approach, nodes can determine their role of either a master or a slave of the piconet without recognizing its neighbors¡¦ ¡¥weight¡¦. The algorithm performs better time and reduces the number of control messages remarkably during the role-selection process. In this paper, we also define the gateways of 2-hops and 3-hops for evaluating the distance between two piconets.

The beginning of the 21st century sees great development and demands on wireless communication technologies. Wireless technologies, either based on a cable replacement or on a networked environment, penetrate our daily life more rapidly than ever. Low operational power, low cost, small form factor, and function diversity are the crucial requirements for a successful wireless product. The receiver??s front-end circuits play an important role in faithfully recovering the information transmitted through the wireless channel. Bluetooth is a short-range cable replacement wireless technology. A Bluetooth receiver architecture was proposed and designed using a pure CMOS process. The front-end of the receiver consists of a low noise amplifier (LNA) and mixer. The intermediate frequency was chosen to be 2MHz to save battery power and alleviate the low frequency noise problem. A conventional LNA architecture was used for reliability. The mixer is a modified Gilbert-cell using the current bleeding technique to further reduce the low frequency noise. The front-end draws 10 mA current from a 3 V power supply, has a 8.5 dB noise figure, and a voltage gain of 25 dB and -9 dBm IIP3. A front-end for dual-mode receiver is also designed to explore the capability of a multi-standard application. The two standards are IEEE 802.11b and Bluetooth. They work together making the wireless experience more exciting. The front-end is designed using BiCMOS technology and incorporating a direct conversion receiver architecture. A number of circuit techniques are used in the front-end design to achieve optimal results. It consumes 13.6 mA from a 2.5 V power supply with a 5.5 dB noise figure, 33 dB voltage gain and -13 dBm IIP3. Besides the system level contributions, intensive studies were carried out on the development of quality LNA circuits. Based on the multi-gated LNA structure, a CMOS LNA structure using bipolar transistors to provide linearization is proposed. This LNA configuration can achieve comparable linearity to its CMOS multi-gated counterpart and work at a higher frequency with less power consumption. A LNA using an on-chip transformer source degeneration is proposed to realize input impedance matching. The possibility of a dual-band cellular application is studied. Finally, a study on ultra-wide band (UWB) LNA implementation is performed to explore the possibility and capability of CMOS technology on the latest UWB standard for multimedia applications.

<p>The content of this report describes a bachelor thesis performed on commission by Cybercom Sweden West. The report describes techniques, methods and development tools used during the project. The purpose of this project is to demonstrate the usefulness with a new Bluetooth profile called Medical Device Profile (MDP) on the Medica trade fair 14-11-2007. The MDP profile that will be released in turn of the ear 07/08 is primarily intended to be used in medical devices.The demonstration is to be made by building a demonstrator consisting of an application running on a smartphone with Bluetooth abilities. The application will handle the Bluetooth connection between the smartphone and the oximeter, the data encryption and other functionalities and presenting the figures received form the oximeter in a Graphical User Interface (GUI).The final demonstrator consists of a smartphone application programmed in Symbian C++, which communicates with the oximeter using the Bluetooth Serial Port Profile (SPP). The application runs on UIQ 3.0 based smartphones and displays heart rate and %SpO2 (The percentage of oxygen saturation in blood), which the application receives from the oximeter.The original idea was to use the MDP profile by porting Cybercom's C version of the MDP to Symbian OS for the Bluetooth communication, depending on various factors described more in detail inside the report this was not done. The purpose of the project was still reached, even though another profile then MDP was used. This was done by replacing the considered oximeter for an older version which is using the SPP. By using SPP the same result will be demonstrated but with an older technique, and this will achieve the same result on Medica trade fair. The project was demonstrated on Medica with a successful result.</p>

Thesis (M.S.)--University of Florida, 2002. / Title from title page of source document. Includes vita. Includes bibliographical references.

Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 2003. / Thesis advisor(s): Xiaoping Yun, Fotis Papoulias. Includes bibliographical references (p. 61-62). Also available online.