packeting the frame queue to a definable window size which is provided to sender and receiver. Sliding window protocol defines maximum transmitter window size‚ Ws which is always one less than the sequence number. How transmitter window is defined: It is contains the data that are ready to be send. The lower limit in transmitter window which is waiting for acknowledgement is Slast .The upper limit frame in transmitter window is Slast + ws -1.Also each transmitted frame is allocated by a timer that
Premium Transmission Control Protocol OSI model Radio
to connect cashier system 3. Stopped being made in 2004 B. Did not work in its beginning II. How wifi works A. Transmitter-creates radio waves B. Receiver 1. Detects radio waves in the air 2. Converts radio waves into energy C. Different frequencies (channels) depend on radiation from transmitter and sensitivity on receiver III. Uses A. Wireless internet connection 1. Can enable internet connection on wireless devices 2. Has set
Premium Wi-Fi Internet Bluetooth
DOPPLER SHIFT Doppler is the apparent change in wavelength (or frequency) of an electromagnetic or acoustic wave when there is relative movement between the transmitter (or frequency source) and the receiver. Summary RF Equation for the Two-Way (radar) case 2(VXmtr % VTgt) fXmt f Rec ’ fXmt % fD ’ fXmt % c Summary RF Equation for the One-Way (ESM) case V f f Rec ’ fXmt % fD ’ fXmt % Xmtr or Rec Xmt c Rules of Thumb for two-way signal travel (divide in half for one-way ESM signal
Premium Doppler effect Wave Sound
fields for spying purpose. BLOCK DIAGRAM: Transmitter: Receiver: HARDWARE IMPLEMENTATION: All we need to have is the following components to design war field spying robot apart from a base with wheels and motors are Sensor unit- a wireless night vision camera: apart from what the basic camera consists of a transmitter unit. It captures images and transmits these images through the transmitter in the form of digital signals‚ which are received by the receiver unit connected to TV or computer. The
Premium Infrared Bluetooth Wireless
4 Introduction: Introduction Ultrasonic RADAR is basically one of the applications of the RADAR system. It consists of a set of ultrasonic transmitter and receiver‚ both of which operate at the same frequency. When something moves in the area covered by the system‚ the fine balance of the circuit is disturbed and the alarm system connected at the receiver side is triggered. The circuit is sensitive and can be adjusted to reset itself automatically or to stay triggered until it is manually reset
Premium Radio
Arduino present on the transmitter side. After processing the command‚ a code is sent wirelessly to the receiver. The receiver side decodes the code and makes the robot move accordingly. The MATLAB based GUI for wireless control of the robot is shown in Fig. 1. The prototypes for the transmitter and the robotic car (present on the receiver side) are shown in Figs. 2 and 3 respectively. Fig. 1. MATLAB GUI for controlling the wireless robot Fig. 2. Authors’ prototype of the transmitter side Fig. 3. Authors’
Premium Control theory Decoder Remote control
can travel even when there is an obstruction between transmitter & receiver. Next‚ RF transmission is more strong and reliable than IR transmission. RF communication uses a specific frequency unlike IR signals which are affected by other IR emitting sources. This RF module comprises of an RF Transmitter and an RF Receiver. The transmitter/receiver (Tx/Rx) pair operates at a frequency of 434 MHz. An RF transmitter receives serial data and transmits it wirelessly through
Premium Infrared Output Wireless
chips have been used to maintain a wireless link between the two computers. The PC on the transmitter side first transmits the data serially to the microcontroller with the help of voltage converter (MAX232) at an adjusted baud rate. This data is then transmitted to the microcontroller on the receiver side with the help of the wireless link maintained by the RF module. This received data is then sent to the receiver PC serially. The RS-232 cable (DB-9 connector in this case) is used to coordinate the
Premium Serial port Data transmission
CHAPTER 1 1.0 INTRODUCTION Students’ Industrial Work Experience Scheme (SIWES) is a skill development program designed to prepare students of Universities‚ Polytechnics/monotechnics and colleges of education for transition from the college environment to work (Akerejola 2008). Oyedele (1990) state that work experience is an educational program in which students participate in work activities while attending school. 1.1 brief histories of SIWES The Students’ Industrial Work Experience Scheme (SIWES)
Premium Radio
Next Century Challenges: Mobile Networking for “Smart Dust” J. M. Kahn‚ R. H. Katz (ACM Fellow)‚ K. S. J. Pister Department of Electrical Engineering and Computer Sciences‚ University of California‚ Berkeley (jmk‚ randy‚ pister} @Ieecs. berkeley.edu Abstract Large-scale networks of wireless sensors are becoming an active topic of research. Advances in hardware technology and engineering design have led to dramatic reductions in size‚ power consumption and cost for digital circuitry
Premium Wireless sensor network Sensor node Routing