Ppt on bluetooth communication code

Bluetooth, IEEE 802.11 & Cell Phone Systems --Arun Radhakrishnan --Thierry Fernaine --Vipul Gautam.

/ 23MHz, and segment length : 32 hops(79MHz system) / 16 hops(23MHz system). Assurance of high quality communication in large urban centers and high-capacity networks The millisecond rhythm with which the change of frequency takes place enables / networks. WEP (Wired equivalent privacy) employs the symmetric key encryption algorithm, Ron’s Code 4 Pseudo Random Number Generator (RC4 PRNG). 802.11 vs. Bluetooth Technology:  Bluetooth uses FHSS (Frequency Hopping Spread Spectrum )  802.11 used FHSS and DSSS. /


WPAN: BLUETOOTH A runic alphabet used to write German language. Found in early Viking Age inscription.

paging Inquiry Access Code (IAC): –General Inquiry Access Code (GIAC): Common to all Bluetooth devices –Dedicated Inquiry Access Code (DIAC): Common to a class of Bluetooth devices –Inquiry process: “finds” BT devices in range Connection Management States of a Bluetooth device standby inquirypage/a piconet are in standby mode Inquiry –A device sends an inquiry message to locate other devices within communication range. That device becomes Master –Timing and ID of other devices are sent to the Master Those /


Wireless Personal Area Networks (WPAN) Part-2: IEEE802.15 Bluetooth IT351: Mobile & Wireless Computing Objectives: – To introduce Ad Hoc networking and.

Same time, an IEEE study group for a WPAN specifications started IEEE802.15 – Requirements fulfilled by Bluetooth (was: ) History and hi-tech… 1999: Ericsson mobile communications AB reste denna sten till minne av Harald Blåtand, som fick ge sitt namn åt en/uses devices address to calculate a page frequency- hopping sequence –Sends a page message (i.e., packet with only Device Access Code (DAC) of paged node) –Repeated until a response is received –When a response is received send a FHS message to allow/


ECE 6332, Spring, 2012 Wireless Communications Zhu Han Department of Electrical and Computer Engineering Class 22 April 23 th, 2012.

a different channel. u So, if one frequency channel is blocked, limited disturbance to the Bluetooth communication –Allows several Bluetooth networks to run concurrently without interrupting one other –Link rate: 1 Mbps, but with overhead, this reduces to 721 kbps / rate –144 kbps in high mobility –384 kbps in limited mobility –2 Mbps in door Frequency Band 1885-2025 MHz Convolutional Codes Turbo Codes for high data rates 3G: CDMA2000 (2000) CDMA 1xEV-DO –peak data rate 2.4 Mbps –supports mp3 transfer and /


Guide to Wireless Communications. 2 Objectives  Explain how the major wireless technologies are used today - WiFi  Describe the applications used in.

devices interfere  Security—some wireless technologies add security such as encryption or coded numbers for authorization to gain access to the network 95 Wireless Performance Gap 96 Summary  Wireless communications, including Internet connections and networks, are becoming standard in business world  SWAP connects different devices for home users  Quickly becoming obselete  Bluetooth connects some devices over short distances  WLANs – WiFi 802.11 family/


Wireless Communications Overview 1. 2 Wireless History  Ancient Systems: Smoke Signals, Carrier Pigeons, … Radio invented in the 1880s by Marconi  Many.

networks (e.g. Wimax) and short-range systems other than Bluetooth (e.g. UWB) less successful 3 Future Wireless Networks Ubiquitous Communication Among People and Devices Next-generation Cellular Wireless Internet Access Wireless / introduces interference 13 Cellular Systems: Reuse channels to maximize capacity  Geographic region divided into cells  Frequency/timeslots/codes/ reused at spatially-separated locations.  Co-channel interference between same color cells.  Base stations/MTSOs coordinate /


1 Mobile Communications Chapter 7: Wireless LANs  Characteristics  IEEE 802.11  PHY  MAC  Roaming .11a, b, g, h, i …  HIPERLAN  Standards overview.

Dependent  modulation, coding PHY Management  channel/bluetooth.orgwww.bluetooth.org  1999: erection of a rune stone at Ercisson/Lund ;-)  2001: first consumer products for mass market, spec. version 1.1 released Special Interest Group  Original founding members: Ericsson, Intel, IBM, Nokia, Toshiba  Added promoters: 3Com, Agere (was: Lucent), Microsoft, Motorola  > 2500 members  Common specification and certification of products (was: ) 82 History and hi-tech… 1999: Ericsson mobile communications/


Wireless Network Security 802.11, Bluetooth™, and Handheld Devices March 7, 2003 ISART.

Class 3 0.1 to 10-meter range – 1mW m-commerce Security Bluetooth Communication Radio Frequency Communications –Controls frequency hopping Logical Link Control (LLC) –Link Management Security /codes. m-commerce Security Operational Countermeasures Ensure that combination keys are used instead of unit keys. Invoke link encryption for all Bluetooth connections regardless of how needless encryption may seem (i.e., no Security Mode 1). Ensure that encryption is enabled on every link in the communication/


Mobile Communications Chapter 7: Wireless LANs

(Differential Quadrature PSK) chipping sequence: +1, -1, +1, +1, -1, +1, +1, +1, -1, -1, -1 (Barker code) max. radiated power 1 W (USA), 100 mW (EU), min. 1mW FHSS (Frequency Hopping Spread Spectrum) spreading, despreading, signal strength min. 2.5 / Prof. Dr.-Ing. Jochen Schiller Freie Universität Berlin Institut of Computer Science 802.11 vs.(?) 802.15/Bluetooth Mobile Communications 2002 Bluetooth may act like a rogue member of the 802.11 network Does not know anything about gaps, inter frame spacing/


Mobile Communications Chapter 7: Wireless LANs

1 or 2 Mbit/s chipping sequence: +1, -1, +1, +1, -1, +1, +1, +1, -1, -1, -1 (Barker code) max. radiated power 1 W (USA), 100 mW (EU), min. 1mW Infrared 850-950 nm, diffuse light, typ. 10 m range carrier detection, energy detection,/de MC - 2013 Prof. Dr.-Ing. Jochen Schiller Freie Universität Berlin Institut of Computer Science 802.11 vs.(?) 802.15/Bluetooth Mobile Communications 2002 Bluetooth may act like a rogue member of the 802.11 network Does not know anything about gaps, inter frame spacing etc. IEEE/


NDSL Lab. CSIE, CGU - 1 6-1. Bluetooth Architecture Overview.

s Harald controlled Denmark and Norway s Harald thinks “notebooks” and “cellular phones” should seamlessly communicate NDSL Lab. CSIE, CGU - 4 Bluetooth Background 1997. - Designed by Ericsson 1998.2 - Established the Special interest group (form SIG 1) Ericsson,/- 66 Inquiry Procedure Inquiry has unique device address (all BT radio use) –ID packet with dedicated or general access code –Unique set of “Inquiry” hop frequencies Any device can inquire by paging the Inquiry address Correlater hit causes slave to/


Lecture 16: WPAN IEEE 802.15 (Bluetooth & ZigBee) Anders Västberg 08-790 44 55 Slides are a selection from the slides from chapter 15 from:

(ACL) –Point-to-multipoint link between master and all slaves –Only single ACL link can exist Bluetooth Baseband format Bluetooth Packet Fields Access code – used for timing synchronization, offset compensation, paging, and inquiry Header – used to identify packet type/802.15.4 “Zigbee” ZigBee is a low-power wireless communications technology ZigBee uses the PHY and MAC layers defined by IEEE 802.15.4, which is the short-distance wireless communication standard for 2.4 GHz band. 250 kbit/s Regional /


Overview of the Bluetooth technology

a piconet only have links to the MASTER. Multi-hop communication is obtained thru the scatternet. Bluetooth Protocol Stack Core protocols Telephony control protocols Cable replacement protocols Adopted protocols Bluetooth Protocol Stack Radio Layer: specifies details of the air interface/ Used with data or voice pkts Error detection: dest discards pkts in error. Uses a CRC error detecting code Positive ack: dest returns a positive ack to error-free pkts retransmission after time-out Nack and retransmission: /


BLUETOOTH The Universal Radio Interface for ad hoc, Wireless Connectivity By Jeffrey Adams.

Svend Forkbeard Svend Forkbeard Communications industry Communications industry The Bluetooth Air Interface Issues Issues /Communication Piconets 2 or more Bluetooth units 2 or more Bluetooth units Form into master/slave configurations with a clock to track the hopping channel Form into master/slave configurations with a clock to track the hopping channel Master units control things Master units control things Establishing Connection Wake-up sequence Wake-up sequence Packet access code Packet access code/


CMPE 257 Spring 20031 CMPE 257: Wireless and Mobile Networking Spring 2005 Bluetooth.

. Single-chip implementation. (early implementations are double-chip) These goals defined:  Link speed.  Communication range.  Transmit power. CMPE 257 Spring 200320 Bluetooth Protocol Stack RF Baseband Link Manager L2CAP RFCOMM/SDP Single chip with RS-232, USB, or PC card/ overlap in space and time. They can work independently. Each with its own hopping sequence. Packets with different access codes. Or they can overlap, i.e., nodes can participate in more than 1 piconet. “Time sharing”. CMPE 257/


Near Field Communication https://store.theartofservice.com/the-near-field-communication-toolkit.html.

Capital city Nairobi under the branding "Beba Pay" https://store.theartofservice.com/the-near-field-communication-toolkit.html Near field communication - Bluetooth and Wi-Fi connections 1 NFC offers a low-speed connection with extremely simple setup, / a modified Miller coding with 100% modulation is used. In all other cases Manchester coding is used with a modulation ratio of 10%. https://store.theartofservice.com/the-near-field-communication-toolkit.html Near field communication - Essential specifications /


GMU IT 212 - Spring 20071 Wireless LAN, Cell Phones, Bluetooth Final Review IT 212 002 How Computers Work May 3, 2007.

Bluetooth device to set up communications with other devices and to send/receive signals to/from them Bluetooth devices may operate in a variety of modes including: Standby, Page, Inquiry, Park and Hold Bluetooth security issues GMU IT 212 - Spring 2007 17 Bluetooth/ wheel with micro-mirrors for projection GMU IT 212 - Spring 2007 53 Input/Output Devices Keyboard Scan codes Mouse Mechanical Mouse Optical Mouse Touchpad Pointing Stick Speech recognition Enrollment of phonemes Two steps: acoustic recognizer, /


REDES INALÁMBRICAS Máster de Ingeniería de Computadores-DISCA Redes Inalámbricas – Tema 2.B Wireless PANs: Bluetooth  Bluetooh Acknowledgments: Foo Chun.

offers voice quality (Voice Quality - Enhanced Voice Processing) with less noise, and provides a faster configuration of communication with other Bluetooth devices within range of reach.  Version 2.0, created to be a separate specification, mainly incorporates the /slave responds with a packet that contains the slaves device access code, native clock and some other slave information.  Page: Master sends page messages by transmitting slaves device access code (DAC) in different hop channels.  Page Scan: /


Bluetooth SIG Member Using Bluetooth® Smart to Control Embedded Systems with a Mobile Device 800-411-6596 +44-2392-232392.

cable (probably Type A to Micro B) 2 single-row header pins Quick Start Guide Regulatory Guide Part #: A20737x-MSDK1 Bluetooth SIG Member Atmosphere online development platform Enables developer to simultaneously generate embedded code & mobile app code in one, environment Public site & community at: https://atmosphere.anaren.com https://atmosphere.anaren.com Users accesses tool via free account registration (agrees to T&C & use/


Multimedia & Communications ATMEL Bluetooth Background information on Bluetooth technology ATMEL implementation of Bluetooth spec.

IF Filter (SAW) Demod. Tank Switch Antenna Filter Control & Data 2.45 GHz Highly Integrated RF Transceiver ! Multimedia & Communications BLUETOOTH CONTROLLER Single chip controller –ARM 7TDMI –64K internal SRAM –Bluetooth Baseband low-level processing –Voice CODEC utilizing log PCM or CVSD (Continuous Variable Slope Delta) Coding Offers following interfaces (available in prototype version): –PCMCIA (PC Card Standard-Feb.1995) AT76C551 –USB interface (USB standard/


1 Bluetooth Technology By, Ms.Vicky HSU Rajan Avudaiappan Computer Networks-I [A1604] SVUCS-426.

) Operates in 2.45 GHz range of RF spectrum A protocol standard communications 5 Bluetooth communication Uses different radio waves to communicate Perfect for short range communication Uses FHSS (Frequency Hopping Spread- Spectrum) Doesn’t interfere with other / immunity to interference Best for Voice transmission than PCM over wireless link Appropriate voice-coding scheme is being selected (After communication between: link managers of the devices) 20 Data & Control Voice Application OBEXWAPTCSSDP RFCOMM/


Introduction to bluetooth. outline Why bluetooth History Bluetooth stack and technology Reference.

ISM-band into 79 1-Mhz channels Channel 0: 2402 MHz … channel 78: 2480 MHz  Communication between devices switches between available channels radio 625 μs radio Three power classes defined with max output power/Bluetooth devices search for and connect to other devices Responsible for channel coding/decoding, timing and managing a Bluetooth link baseband Master/slave  Piconet : A master and the slaves piconet baseband  Scatternet : multiple piconets connected together scatternet baseband  Communication/


Lecture: Bluetooth and Zigbee Anders Västberg 08-790 44 55 Slides are a selection from the slides from chapter 12,13, and 14 from:

links Asynchronous connectionless (ACL) –Point-to-multipoint link between master and all slaves –Only single ACL link can exist Bluetooth Baseband format Bluetooth Packet Fields Access code – used for timing synchronization, offset compensation, paging, and inquiry Header – used to identify packet type and carry /microseconds) IEEE 802.15 802.15.4 “Zigbee” ZigBee is a low-power wireless communications technology ZigBee uses the PHY and MAC layers defined by IEEE 802.15.4, which is the short-distance wireless/


EEE 464 EEE 464 Wireless Communications Lecture 9 Shahzad Malik, Ph.D.

ISM  Voice and data transmission, approx. 1 Mbit/s gross data rate One of the first modules (Ericsson). Shahzad MalikLecture 927Wireless Communications – Wireless Data Bluetooth Characteristics  2.4 GHz ISM band, 79 (23) RF channels, 1 MHz carrier spacing  Channel 0: 2402 MHz …/ dynamically managing QoS and bandwidth: In the PHY layer by adjusting the DL and UL burst profiles (modulation and coding combination) on a per-frame basis. In the MAC layer through fragmentation and packing (both can be done at/


Wireless Personal Area Networks (WPAN) Part-2: IEEE802.15 Bluetooth IT351: Mobile & Wireless Computing Objectives: – To introduce Ad Hoc networking and.

Same time, an IEEE study group for a WPAN specifications started IEEE802.15 – Requirements fulfilled by Bluetooth (was: ) History and hi-tech… 1999: Ericsson mobile communications AB reste denna sten till minne av Harald Blåtand, som fick ge sitt namn åt en/uses devices address to calculate a page frequency- hopping sequence –Sends a page message (i.e., packet with only Device Access Code (DAC) of paged node) –Repeated until a response is received –When a response is received send a FHS message to allow/


IEEE 802.15.1 Bluetooth. Introduction Wireless technology for short-range voice and data communication Low-cost and low-power Provides a communication.

sight and offers only a point-to-point link. Hence, the concept of Bluetooth evolved to provide a universal standard for short-range RF communication of both voice and data. Introduction The ultimate goal is to make computers (/range, such as an area within a home. Characteristics Software controls and identity coding built into each microchip ensure that only those units preset by their owners can communicate with the following characteristics: – Fast frequency hopping to minimize interference – Adaptive /


Bluetooth and WAP Push Based Location-Aware Mobile Advertising System Lauri Aalto Nicklas Göthlin Jani Korhonen Timo Ojala MobiSys’04, June 6-9, 2004,

synchronization, offset compensation, paging and inquiry. Three types : Channel Access Code (CAC), Device Access Code (DAC) and Inquiry Access Code (IAC). Header: information for packet acknowledgement, packet numbering for out-of-order packet reordering, flow control, slave address and error check for header. Bluetooth packet Bluetooth feature FHSS (Frequency hopping spread spectrum communication 跳頻 式展頻通訊技術 ) - Frequency hopping cycle =625 us (1600 times per seconds) - 每隔一段時間切換傳送頻率 - 避免訊號干擾 - 保密性 Frequency/


7.1 Prof. Dr.-Ing. Jochen H. Schiller MC Mobile Communications Chapter 7: Wireless LANs Characteristics IEEE (PHY,

, h, i, n … z) Bluetooth / IEEE 802.15.x IEEE 802.16/.20/.21/.22 RFID Comparison 7.2 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2009 Mobile Communication Technology according to IEEE (examples) Local /Layers and functions PLCP Physical Layer Convergence Protocol clear channel assessment signal (carrier sense) PMD Physical Medium Dependent modulation, coding PHY Management channel selection, MIB Station Management coordination of all management functions PMD PLCP MAC LLC MAC Management PHY /


Bruce Scharlau, University of Aberdeen, 2011 Bluetooth Considerations Mobile Computing Some slides from MobEduNet.

Bluetooth differs from wifi 802.11b: –Communicate at up to 11 Mbit/sec –Distances up to 100 meters Bluetooth: –1 Mbit/sec –Shorter range: 10 meters –Reduced power requirements Bruce Scharlau, University of Aberdeen, 2011 Bluetooth features Wireless and automatic Bluetooth/ bt.getBluetoothAddress(); dataOut.writeUTF(from); dataOut.writeUTF(mMessageField.getString()); } finally { … // close connections Code from AuctionMIDlet Bruce Scharlau, University of Aberdeen, 2011 Find a device, and send a message Sees B/


Presentation by Anna La Mura and Marcus Nagel TIM01AGR

the country and established Christianity Viking staates included Norway & Sweden, which gives the connection to Ericsson Bluetooth and its development Ericsson Mobile Communication Bluetooth Special Interest Group (SIG) 5 founding members Ericsson, Nokia, IBM, Intel & Toshiba Promoter‘/ Potential master identifies devices in range that wish to participate Transmits ID packet with inquiry access code (IAC) Occurs in Inquiry state Device receives inquiry Enter Inquiry Response state Returns FHS packet /


VIRGINIA POLYTECHNIC INSTITUTE & STATE UNIVERSITY MOBILE & PORTABLE RADIO RESEARCH GROUP MPRG Channel Frame Error Rate for Bluetooth in the Presence of.

and Medical) band, is a license free band allocated for a variety of consumer applications.  Part 15 of the FCC code limits the output power, channel bandwidth and air interface of wireless devices operating in the ISM band.  Devices such as / level can be calculated. [1] Matthew C. Valenti, Max Robert and Jeffrey H. Reed, “On the throughput of Bluetooth data transmissions,” IEEE Wireless Communications and Networking Conference, vol. 1, pp. 119 123, March 2002 PRobe ISM (PRISM) – System Model  PRISM is/


CPET 260 Bluetooth. What is Bluetooth? Not IEEE802.11 (Wi-Fi) or HomeRF Originally designed to replace wires Short-range, lower-power wireless technology.

technology A means to replace cables Keyboard, mouse, printer, etc. What is Bluetooth? A method to allow data communications between diverse devices I.e. computers, mobile phones, network appliances, handheld devices, digital cameras, etc. Bluetooth Special Interest Group (SIG) Originally developed by Swedish Company Ericsson See http://www.bluetooth.comhttp://www.bluetooth.com A royalty free, open specification to create a wide range of products/


8/4/2015 Cpre 458/558: Real-Time Systems (G. Manimaran) 1 Wireless Communication in Industrial Networks Kavitha Balasubramanian Teaching Assistant, CprE.

458/558: Wireless Communication in Industrial Networks13 Existing Wireless Standards … Bluetooth Bluetooth Low-complexity low-cost solution for short-range wireless communicationsLow-complexity low-cost solution for short-range wireless communications Intended for cable replacement/ keeps packet even if decoding fails and performs additional processing such as majority voting. Use different codes for different packets to conserve energy. Send predefined number of transmissions. Therefore no need to wait/


Bluetooth Smart Nodes for Mobile Ad-hoc Networks Jan Beutel Computer Engineering and Networks Lab December 17, 2002 Computer Engineering and Networks Laboratory.

driven drivers and libraries for peripherals and interfaces Event driven application model facilitates coarse grained cooperative multithreading 30 kB code size in ROM, 1-2 kB in RAM (with 128 byte UART buffers) 17 ETH Zurich December/showcases, not much system documentation 24 ETH Zurich December 17, 2002 Demo App: Bluetooth enabled Appliances Btnodes can communicate with other Bluetooth enables devices using standard Bluetooth profiles for SMS (AT Commands) and object push (OBEX). BTnode enabled Egg Carton/


Modeling & Simulation of Bluetooth MAC protocol COE543 Term Project Spring 2003 Submitted by: H.M.Asif (ID# 230457)

Results Future work Future work Conclusion Conclusion Bluetooth overview: What is Bluetooth? What is Bluetooth? Why Bluetooth? Why Bluetooth? Bluetooth History Bluetooth History Bluetooth Network Topology Bluetooth Network Topology What is Bluetooth? Cable replacement technology primarily Cable replacement technology primarily Bluetooth wireless technology is an open specification for a low-cost, low-power, short-range radio technology for ad-hoc wireless communication of voice and data anywhere in the/


Wireless Networks - MAC layer - Bluetooth. What is Bluetooth? Cable replacement technology primarily Bluetooth wireless technology is an open specification.

in the unlicensed band at 2.4 GHz. The major goal is to allow relatively cheap electronic devices to communicate directly in an ad-hoc fashion, Moreover, the Bluetooth equipped devices can also form networks– such a network of personal devices is often referred to as a / Header Addressing (3) Packet type (4) Flow control (1) 1-bit ARQ (1) Sequencing (1) HEC (8) Access code Header Payload 54 bits Purpose Encode with 1/3 FEC to get 54 bits Broadcast packets are not ACKed For filtering retransmitted packets 18 /


Bluetooth An Ad Hoc Network. Trends Personal Computing Devices are ubiquitous –Mobile phone, pager, PDA, etc. –Improving processing power, network access,

Area Network Close Range Wireless Network Revolutionary way of interacting with Information Technology Devices Seemless communication Phone Example Bluetooth Protocol Stack Bluetooth Protocol Stack Notes I Application layer, Application runs here. Specific guidelines are in place /and casings on BT device may affect performance of antenna. Baseband Physical Layer - Responsible for: –Channel coding and decoding. –Provides low level control of timing and management of a single data packet transfer. –Error/


© 2006 IPextreme, Inc. NDA Confidential Bluetooth Solutions.

to Host CPU Software Architecture Upper protocol stack communicates with lower protocol stack over standard Host Controller Interface (HCI) transport No real servicing of Bluetooth hardware or latency requirements imposed on application software /Complete IP © 2006 IPextreme, Inc. NDA Confidential Page 14 Packaged For Ease of Use Implementation Information Configured Code & Deliverables EDA Tools XML Metadata Configuration User Interface Configuration Engine XPack Complete IP © 2006 IPextreme, Inc./


Prof. Dr.-Ing. Jochen Schiller, SS057.1 Bluetooth Idea  Universal radio interface for ad-hoc wireless connectivity  Interconnecting.

OBEX: object exchange TCS BIN: telephony control protocol specification – binary BNEP: Bluetooth network encapsulation protocol SDP: service discovery protocol RFCOMM: radio frequency comm. PPP / Intermec/Intellitag, www.intermec.com  I-Ray Technologies, www.i-ray.com  RF Code, www.rfcode.com  Texas Instruments, www.ti-rfid.com/id  WhereNet, www.wherenet./.sc17.com, www.aimglobal.org/standards/rfidstds/sc17.htm,  Identification and communication ISO TC 104 / SC 4, www.autoid.org/tc104_sc4_wg2.htm, www./


Comnet.technion.ac.il/~cn23s00 Computer Networks Laborator y Technion Israel Institute of Technology BlueTooth High-Level Simulator A Base Platform For.

slave unit. Piconet - A “mini-network”, with small coverage area, which consist of o ne BlueTooth master unit, and o ne to seven slave units. Slaves communicate only with the master unit (and not with each other). Piconet - A “mini-network”, with /classes for networking and threads.  Each unit is represented by a separate process. Our code implements a single unit, which can be executed from the command prompt. Our code implements a single unit, which can be executed from the command prompt. Running a few /


Soft-in/ Soft-out Noncoherent Sequence Detection for Bluetooth: Capacity, Error Rate and Throughput Analysis Rohit Iyer Seshadri and Matthew C. Valenti.

the generator polynomial The cyclic code can hence be expressed using a 2 5 = 32 state trellis and decoded by running either a Viterbi or MAP algorithm over the trellis 4/6/2006 SISO-Noncoherent Sequence Detection for Bluetooth 11/22 Capacity Under Modulation, Channel And Receiver Design Constraints Channel capacity denotes maximum allowable data rate for reliable communication over noisy channels In/


Example Wireless Networks: WaveLAN, Bluetooth Y. Richard Yang 01/26/2004.

a paging message to the slave to join it 25 Inquiry Hopping 26 The Bluetooth Link Establishment Protocol FS: Frequency Synchronization DAC: Device Access Code IAC: Inquiry Access Code 27 Bluetooth Links 28 Bluetooth Packet Format Header 29 Multiple-Slot Packet 30 Background: Forward Error Correction Code/Erasure Code r Widely used in wireless communications x y 31 FEC: Example r Suppose data signal is x, and the/


Comnet.technion.ac.il/~cn23s00 Computer Networks Laborator y Technion Israel Institute of Technology BlueTooth High-Level Simulator A Base Platform For.

piconet/ scatternet.   The units communicate over the network using UDP: UDP is best for simulation radio transmissions. Units can run on different machines. Packets loss is simulated in application level. BlueTooth High Level Simulator 799-0767, ZLE /Description   Handle all the attributes and behavior of a master or slave functionality.   As so, include the main code regarding executing BT requests and response.   As master: Executing all the supported types of requests, and handle all types/


BLUETOOTH Overview General Description A cable replacement technology A cable replacement technology Operates in the unlicensed ISM band at 2.4 GHz Operates.

and low power, and low cost. low cost. General Description (2) Bluetooth supports Bluetooth supports Synchronous & asynchronous data channels.Synchronous & asynchronous data channels. Three /code 3/3 rate: no FEC 3/3 rate: no FEC ARQ (ACL packets only ) ARQ (ACL packets only ) 16-bit CRC (CRC-CCITT) & 1-bit ACK/NACK16-bit CRC (CRC-CCITT) & 1-bit ACK/NACK 1-bit sequence number1-bit sequence number access codeheader payload 72b54b 0-2745b Mixed Link Example m s1s1 s2s2 SCO ACL Inter piconet communication/


Unit 4 Networks. Computer Networks A computer network is a collection of computers linked together so that they can communicate with each other A computer.

spread over a large geographical area not permanently connected to each other communicate using telephone lines, radio transmitters or satellite links. Connected by gateways /code reader in a warehouse Part of a WAN or Virtual Private Network e.g. a delivery driver using a hand held device to confirm deliveries with a central database Part of a WAN or Virtual Private Network e.g. a delivery driver using a hand held device to confirm deliveries with a central database Bluetooth technology The Bluetooth/


Wi-Fi and Bluetooth Laboratorio di El&Tel Mauro Biagi.

available 83.5 MHz spectrum (in most countries) into 3 wide-band 22 MHz channels. Uses an 11 bit spreading code to reduce the possible interference on signals in each wide-band channel DSSS and FH DHSS which uses 22 MHz channels will/to describe π/4-DPSK and 8DPSK schemes, each giving 2 and 3 Mbit/s respectively. Bluetooth performance Bluetooth is a packet-based protocol with a master-slave structure. One master may communicate with up to 7 slaves in a piconet; all devices share the masters clock. Packet /


Digital Systems Design VHDL in Bluetooth Baseband Module by Marc A. Mackey.

through which digital signals are sent without frequency shifting. In general, only one communication channel is available at any given time. (eg. Ethernet)  Bluetooth - is a short-range radio communication system that is intended to create ad-hoc wireless connectivity between portable and/or/they are loaded into the 8 least significant (left-most) and other bits are set to zero  The CRC code is appended to the information.  In the checking the shift register is initialized as before and CRC is performed /


Bluetooth: Technology and Market Perspectives Stefano Galli Stefano Galli, Ph.D. Research Scientist Telcordia Technologies, Inc. Room: MCC-1J124B 445 South.

networks. This is the first Bluetooth public consumer trial.USA Axis Communications (5/2000): developing (and demonstrating) a wireless solution that allows Bluetooth devices to gain access to a wide variety of services. Bluetooth “hot spots” will be created/rate of 1 Mb/s (Binary GFSK modulation); Frequency hopping: 1,600 hops per second; Error correcting codes; Time Division Duplexing. Technical overview: Physical Layer Telcordia Technologies Proprietary - Copyright 2001. WOCC 2001 Technical overview: /


Design Description Java Bluetooth stack (JBS). What is a Bluetooth stack? In short, to get any functionality out of a Bluetooth device, one needs to implement.

user, such as Serial port profile, LAN access, OBEX file transfer & other Then why bother… …coding your own Bluetooth stack? Because you get the complete stack (with the hardware you bought), you have no other choice / )http://sourceforge.net/projects/javabluetooth/ What’s a Harald Bluetooth stack? “a small Bluetooth stack for wireless communication between Java applications”, author calls it Originally created for testing Bluetooth performance in distributed wireless control application (you can find more /


Bluetooth and java – a perfect match? Sean O Sullivan ceo Nordic Bluetooth, October 5th, 2001.

members: Rococo Software, Ericsson, Nokia, Extended Systems, … Due for completion end 2001 JSR82 – benefits for Bluetooth Portability of code + Standard API allows same code to work on different devices, different Bluetooth Stacks Increases Bluetooth Adoption, reduces time-to-application + Code in Java versus C, C++ + World’s fastest-growing Dev Community –2.5M Java developers worldwide JSR82 Target Platform + Devices for the J2ME™ platform + API will depend/


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