[db] Path loss free space Valid only in Far Field. Far Field Region d>df. df=2d 2 /λ
|
|
- Morris Reynolds
- 5 years ago
- Views:
Transcription
1 Fundamentals of Propagation and Basic Equations. Outdoor Propagation Indoor Propagation Models to compute PL and Preceived in Outdoor and Indoor Communications. Examples of real situations. Gustavo Fano 1
2 Propagation Mechanisms Reflection Propagating wave impinges on an object which is large compared to wavelength. E.g., the surface of the Earth, buildings, walls, etc. Diffraction Radio path between transmitter and receiver obstructed by surface with sharp irregular edges. Waves bend around the obstacle, even when LOS does not exist. Scattering Objects smaller than the wavelength of the propagating wave E.g., foliage, street signs, lamp posts. Basics Equations of Propagation Friis Free Space Equation (unobstructed line-of-sight path between T-R) Pr(d)=Pt.Gt.Gr.λ 2 /(4πd) 2 Received Power in Free space [W] If Gt=Gr=1 P LS =10log(Pt/Pr) 4π d PL FS = 20log [db] Path loss free space Valid only in Far Field. λ df=2d 2 /λ Far Field Region d>df Pr(d)=10log(Pr(d 0 )) dbm +20log(d 0 /d) Received Power Free Space[dBm] Pr = Pt.Gt.Gr.ht 2.hr 2 /d 4 Received Power. Perfect Ground Reflection Γ=-1 2
3 Received Power vs. Distance. Pt=1W, 2W, 5W, 10W, 20W, 50W. Gr=Gt=1, ht=50m, hr=1m, freq=900mhz. Perfect Ground reflection. 1.E-07 1.E-08 Prec.[W] 1.E-09 1.E-10 1.E-11 1.E-12 1.E Distance[m] 3
4 Path loss models based on distance Perhaps the simplest propagation model is called the d n model, where RSSI is determined by the distance between T and R for a given path loss exponent: PL = PL(d 0 ) + 10nlog(d/d 0 ) [db] (1) PL(d 0 )=20log(4πd/λ) [db] d 0 : Reference distance in Far Field. Typically d 0 = 1m (indoor) d 0 = 100 or 1000m (outdoor). d: Distance between T-R. n: Path loss exponent, depends on environment. PL(d 0 ): Power losses at distance d 0, measured or calculated at Far Field. PL: Power losses at distance d. PL gives an average value. 150 Path Loss vs Distance PL(d) [db] distance[m] PL(d), n=1.7 In builduing LOS PL(d), n=2 Free Loss Space PL(d), n=3 urban area PL(d), n=4 shadow urban cellular radio 4
5 Outdoor Propagation Important Factors Irregular Terrain Electrical Properties (ε and σ) of terrain: Sand Dry Soil Humid Soil Concrete Sea Water Fresh Water Obstacles: Distance between T-R Frequency between T-R Environmental Conditions: Buildings Trees Foliage Rain Snow Refractive index of atmosphere Environment Path Loss Exponent n Free Space 2 Urban Area Cellular Radio 2.7 to 3.5 Shadowed Urban Radio 3 to 5 Cellular In Building Line of Sight 1.6 to 1.8 Obstructed in Building 4 to 6 Obstructed in Factories 2 to 3 5
6 Link Budget Calculations. Example Consider a wireless system with: Pt=0.1W to 3W, Gt=Gr=1, freq.=900mhz, BWreceiver=30KHz, Freceiver=10dB, SNRreceiver>25dB. Plot the maximum separation distance vs. Power transmitted for this system in the case of Shadowed Urban (n 4) Thermal Noise: N=K.T 0.B.F or N(dBm) = -174dBm+10.logB+F(dB) T 0 = 290 K room temperature in K. K = J/ K, Boltzman Constant. F = Noise Figure of the receiver (usually 5 to 10dB) B = Bandwidth of the receiver [Hz] N=-174dBm+10log(30000)+10dB=-119dBm Signal to Noise Ratio: SNR(dB) < Pr - N Pr > 25dB-119dBm=-94dBm Pr=Pt.Gt.Gr/PL Pr(dB)=Pt+Gr+Gt-PL=Pt+0dB+0dB-PL=Pt-PL PL(1Km)=20log(4π.1000m/(1/3m))=91.5dB PL = 91.5dB log(d/1Km) Pr=Pt-PL=Pt-[91.5dB log(d/1000m)] -94dBm dmax=1000m.10 (-94dBm+91.5dBm-Pt)/40 Maximum Distance between T-R vs. Power Transmitted. BW=30KHz, f=900mhz, SNR(receiver min)=25db, F=10dB,Gt=Gr=1 Maximum Distance [Km Power Transmitted [mw] 6
7 Indoor Propagation Important Factors: Floors Ceilings Walls Partitions Distance Frequency With the decreasing carrier wavelengths in PCS, factors such as: Position of desks Doors are open or closed Movement of people Propagation models can be used to estimate the received signal strength indication (RSSI). Table 1. Losses for various partitions Partition Loss [db] Freq.[MHz] Metal Wall Aluminium siding Concrete wall Foil Insulation Sheet rock 2dB 9600 Dry Plywood 1dB 9600 Table 2. Floor to Floor losses Number of Floors Total losses [db] Freq.[MHz] Trough 1 floor Trough 2 floor Trough 3 floor Trough 4 floor Table 3. Exponents n for different environments Type of partition n Free Space 2 Movable walls 2.4 Fixed Walls 3 7
8 -70dbm -60dBm -50dBm Frequency = 870MHz, Pt = -10dbm, n = 3 (fixed walls). Antenna = Isotropic, G=1, Transmitter and Receiver in the same floor 4π d 4π 1m PL( d 0 = 1m) = PLFS = 20log = 20log 31.25dB λ 0.344m PL( d = 9m) = 31.25dB log(9m /1m) = 31.25dB dB 60dB Pr = 10dBm 60dB = 70dBm (Outermost Circule) 8
9 -80dBm -70dBm -60dBm Frequency = 870MHz, Pt = -10dbm, n = 4.2 (fixed walls). Antenna = Isotropic, G=1, Transmitter 1 st Floor. Receiver 2 nd Floor. ( ) PL( d = 7m) = 31.25dB log(7m /1m) = 31.25dB dB 67dB Pr 10dBm 67dB = 77dBm (outermost Circule) 9
10 -70dBm -60dBm -50dBm Frequency = 870MHz, Pt = -10dbm, n = 2. Antenna = Isotropic, G=1. Transmitter and Receiver in the same floor PL=PL(d 0 )+10nlog(d/d 0 )+ Σ[(Pi)(AFi)] +FAF [db] (2) n= 2 FAF: Floor Attenuation Factor (Table2) AFi: Partition attenuation of element i Point A (d = 4m) PL = 31.25dB + 10.(2).log(4m /1m) + 3dB + 0dB = 46. 3dB Pr = 10dBm 46.3dB = 56.3dBm 57dBm Loss of wall 3dB FAF=0dB 10
11 -80dBm -70dBm -60dBm Frequency = 870MHz, Pt = -10dbm, n = 2. Antenna = Isotropic, G=1. Transmitter first floor. Receiver second floor. 11
12 REFERENCES. BOOKS and JOURNAL 1) Robert K. Morrow. Site-Specific Engineering for Indoor Wireless Communications. Applied Microwave and Wireless. March 1999, p ) T.Rappaport. Wireless Communications. Principles and Practice. Prentice Hall.Chap ) D.Pozar Microwave Engineering. Chap.12, p.685, Atmospheric effects, Second J.Wiley&Sons, WEBSITES 1) Complete Tutorial by T.S. Rappaport about Propagation and Radio System Design Issues in Mobil Radio Systems. 2) Technical Note on Indoor Wireless Radio propagation at 900 MHz and 2.4 GHz -- A great Introduction to Indoor Propagation Effects. Multipath fading, Radio Propagation & Diffraction Calculator v1.01 (WIN3.11 or 95 ~70K) "Narrowband Multipath Fading: A Simple Model" -- A math Introduction to Multipath Fading (~73K) Radio Propagation" -- A great Introduction to Propagation Effects (~402K) Wireless RF Performance Evaluation Tool RCalc 3.13 (WIN3.11 or 95 ~182K) 3) Introduction to Indoor Radio Propagation 4) Several topics of RF, Wireless and S.Spectrum. 5) Indoor and Microcell Design Tool Suite 12
Antenna & Propagation. Basic Radio Wave Propagation
For updated version, please click on http://ocw.ump.edu.my Antenna & Propagation Basic Radio Wave Propagation by Nor Hadzfizah Binti Mohd Radi Faculty of Electric & Electronics Engineering hadzfizah@ump.edu.my
More informationWireless Communication System
Wireless Communication System Generic Block Diagram An t PC An r Source Tx Rx Destination P t G t L p G r P r Source a source of information to be transmitted Destination a destination of the transmitted
More informationChapter 3. Mobile Radio Propagation
Chapter 3 Mobile Radio Propagation Based on the slides of Dr. Dharma P. Agrawal, University of Cincinnati and Dr. Andrea Goldsmith, Stanford University Propagation Mechanisms Outline Radio Propagation
More informationAntennas & Propagation. CSG 250 Fall 2007 Rajmohan Rajaraman
Antennas & Propagation CSG 250 Fall 2007 Rajmohan Rajaraman Introduction An antenna is an electrical conductor or system of conductors o Transmission - radiates electromagnetic energy into space o Reception
More informationReview of Path Loss models in different environments
Review of Path Loss models in different environments Mandeep Kaur 1, Deepak Sharma 2 1 Computer Scinece, Kurukshetra Institute of Technology and Management, Kurukshetra 2 H.O.D. of CSE Deptt. Abstract
More informationRadio Propagation Fundamentals
Radio Propagation Fundamentals Concept of Electromagnetic Wave Propagation Mechanisms Modes of Propagation Propagation Models Path Profiles Link Budget Fading Channels Electromagnetic (EM) Waves EM Wave
More informationMobile Radio Wave propagation channel- Path loss Models
Mobile Radio Wave propagation channel- Path loss Models 3.1 Introduction The wireless Communication is one of the integral parts of society which has been a focal point for sharing information with different
More informationChapter 4 Radio Propagation Large-Scale Path Loss. School of Information Science and Engineering, SDU
Chapter 4 Radio Propagation Large-Scale Path Loss School of Information Science and Engineering, SDU Outline Introduction to Radio Wave Propagation Three Basic Propagation Mechanisms Free Space Propagation
More informationCharacterization of Mobile Radio Propagation Channel using Empirically based Pathloss Model for Suburban Environments in Nigeria
Characterization of Mobile Radio Propagation Channel using Empirically based Pathloss Model for Suburban Environments in Nigeria Ifeagwu E.N. 1 Department of Electronic and Computer Engineering, Nnamdi
More informationThe Radio Channel. COS 463: Wireless Networks Lecture 14 Kyle Jamieson. [Parts adapted from I. Darwazeh, A. Goldsmith, T. Rappaport, P.
The Radio Channel COS 463: Wireless Networks Lecture 14 Kyle Jamieson [Parts adapted from I. Darwazeh, A. Goldsmith, T. Rappaport, P. Steenkiste] Motivation The radio channel is what limits most radio
More informationAntennas and Propagation. Chapter 5
Antennas and Propagation Chapter 5 Introduction An antenna is an electrical conductor or system of conductors Transmission - radiates electromagnetic energy into space Reception - collects electromagnetic
More informationAntennas and Propagation. Chapter 5
Antennas and Propagation Chapter 5 Introduction An antenna is an electrical conductor or system of conductors Transmission - radiates electromagnetic energy into space Reception - collects electromagnetic
More informationSession2 Antennas and Propagation
Wireless Communication Presented by Dr. Mahmoud Daneshvar Session2 Antennas and Propagation 1. Introduction Types of Anttenas Free space Propagation 2. Propagation modes 3. Transmission Problems 4. Fading
More informationLECTURE 3. Radio Propagation
LECTURE 3 Radio Propagation 2 Simplified model of a digital communication system Source Source Encoder Channel Encoder Modulator Radio Channel Destination Source Decoder Channel Decoder Demod -ulator Components
More information(Refer Slide Time: 00:01:31 min)
Wireless Communications Dr. Ranjan Bose Department of Electrical Engineering Indian Institute of Technology, Delhi Lecture No. # 12 Mobile Radio Propagation (Continued) We will start today s lecture with
More informationLARGE SCALE MILLIMETER WAVE CHANNEL MODELING FOR 5G
LARGE SCALE MILLIMETER WAVE CHANNEL MODELING FOR 5G 1 ARCADE NSHIMIYIMANA, 2 DEEPAK AGRAWAL, 3 WASIM ARIF 1, 2,3 Electronics and Communication Engineering, Department of NIT Silchar. National Institute
More informationEvaluation of Power Budget and Cell Coverage Range in Cellular GSM System
Evaluation of Power Budget and Cell Coverage Range in Cellular GSM System Dr. S. A. Mawjoud samialmawjoud_2005@yahoo.com Abstract The paper deals with study of affecting parameters on the communication
More informationAntennas and Propagation
CMPE 477 Wireless and Mobile Networks Lecture 3: Antennas and Propagation Antennas Propagation Modes Line of Sight Transmission Fading in the Mobile Environment Introduction An antenna is an electrical
More informationBasic Radio Physics. Developed by Sebastian Buettrich. ItrainOnline MMTK 1
Basic Radio Physics Developed by Sebastian Buettrich 1 Goals Understand radiation/waves used in wireless networking. Understand some basic principles of their behaviour. Apply this understanding to real
More informationWireless Physical Layer Concepts: Part II
Wireless Physical Layer Concepts: Part II Raj Jain Professor of CSE Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this lecture are available at:
More informationPath-loss and Shadowing (Large-scale Fading) PROF. MICHAEL TSAI 2015/03/27
Path-loss and Shadowing (Large-scale Fading) PROF. MICHAEL TSAI 2015/03/27 Multipath 2 3 4 5 Friis Formula TX Antenna RX Antenna = 4 EIRP= Power spatial density 1 4 6 Antenna Aperture = 4 Antenna Aperture=Effective
More informationChannel Modeling and Characteristics
Channel Modeling and Characteristics Dr. Farid Farahmand Updated:10/15/13, 10/20/14 Line-of-Sight Transmission (LOS) Impairments The received signal is different from the transmitted signal due to transmission
More informationReview of Selected Wireless System Path loss Prediction Models and its Adaptation to Indoor Propagation Environments
, March 15-17, 2017, Hong Kong Review of Selected Wireless System Path loss Prediction Models and its Adaptation to Indoor Propagation Environments O.O. Oni and F.E. Idachaba, Members, IAENG Abstract The
More informationAntennas and Propagation
Mobile Networks Module D-1 Antennas and Propagation 1. Introduction 2. Propagation modes 3. Line-of-sight transmission 4. Fading Slides adapted from Stallings, Wireless Communications & Networks, Second
More informationPROPAGATION MODELING 4C4
PROPAGATION MODELING ledoyle@tcd.ie 4C4 http://ledoyle.wordpress.com/temp/ Classification Band Initials Frequency Range Characteristics Extremely low ELF < 300 Hz Infra low ILF 300 Hz - 3 khz Ground wave
More informationProject = An Adventure : Wireless Networks. Lecture 4: More Physical Layer. What is an Antenna? Outline. Page 1
Project = An Adventure 18-759: Wireless Networks Checkpoint 2 Checkpoint 1 Lecture 4: More Physical Layer You are here Done! Peter Steenkiste Departments of Computer Science and Electrical and Computer
More informationWireless Communication Fundamentals Feb. 8, 2005
Wireless Communication Fundamentals Feb. 8, 005 Dr. Chengzhi Li 1 Suggested Reading Chapter Wireless Communications by T. S. Rappaport, 001 (version ) Rayleigh Fading Channels in Mobile Digital Communication
More informationUNIK4230: Mobile Communications Spring 2013
UNIK4230: Mobile Communications Spring 2013 Abul Kaosher abul.kaosher@nsn.com Mobile: 99 27 10 19 1 UNIK4230: Mobile Communications Propagation characteristis of wireless channel Date: 07.02.2013 2 UNIK4230:
More informationAntennas and Propagation. Chapter 6a: Propagation Definitions, Path-based Modeling
Antennas and Propagation a: Propagation Definitions, Path-based Modeling Introduction Propagation How signals from antennas interact with environment Goal: model channel connecting TX and RX Antennas and
More informationMobile Communications
Mobile Communications Part IV- Propagation Characteristics Professor Z Ghassemlooy School of Computing, Engineering and Information Sciences University of Northumbria U.K. http://soe.unn.ac.uk/ocr Contents
More informationCHAPTER 6 THE WIRELESS CHANNEL
CHAPTER 6 THE WIRELESS CHANNEL These slides are made available to faculty in PowerPoint form. Slides can be freely added, modified, and deleted to suit student needs. They represent substantial work on
More informationModule contents. Antenna systems. RF propagation. RF prop. 1
Module contents Antenna systems RF propagation RF prop. 1 Basic antenna operation Dipole Antennas are specific to Frequency based on dimensions of elements 1/4 λ Dipole (Wire 1/4 of a Wavelength) creates
More informationChapter 4 Radio Communication Basics
Chapter 4 Radio Communication Basics Chapter 4 Radio Communication Basics RF Signal Propagation and Reception Basics and Keywords Transmitter Power and Receiver Sensitivity Power - antenna gain: G TX,
More informationSimulation of Outdoor Radio Channel
Simulation of Outdoor Radio Channel Peter Brída, Ján Dúha Department of Telecommunication, University of Žilina Univerzitná 815/1, 010 6 Žilina Email: brida@fel.utc.sk, duha@fel.utc.sk Abstract Wireless
More informationELEG 5693 Wireless Communications Propagation and Noise Part I
Department of Electrical Engineering University of Arkansas ELEG 5693 Wireless Communications ropagation and Noise art I Dr. Jingxian Wu wuj@uark.edu OULINE 2 Wireless channel ath loss Shadowing Small
More informationCHAPTER 2 WIRELESS CHANNEL
CHAPTER 2 WIRELESS CHANNEL 2.1 INTRODUCTION In mobile radio channel there is certain fundamental limitation on the performance of wireless communication system. There are many obstructions between transmitter
More informationMSIT 413: Wireless Technologies Week 3
MSIT 413: Wireless Technologies Week 3 Michael L. Honig Department of EECS Northwestern University January 2016 Why Study Radio Propagation? To determine coverage Can we use the same channels? Must determine
More informationUHF Radio Frequency Propagation Model for Akure Metropolis
Abstract Research Journal of Engineering Sciences ISSN 2278 9472 UHF Radio Frequency Propagation Model for Akure Metropolis Famoriji J.O. and Olasoji Y.O. Federal University of Technology, Akure, Nigeria
More informationVehicle Networks. Wireless communication basics. Univ.-Prof. Dr. Thomas Strang, Dipl.-Inform. Matthias Röckl
Vehicle Networks Wireless communication basics Univ.-Prof. Dr. Thomas Strang, Dipl.-Inform. Matthias Röckl Outline Wireless Signal Propagation Electro-magnetic waves Signal impairments Attenuation Distortion
More informationPoint to point Radiocommunication
Point to point Radiocommunication SMS4DC training seminar 7 November 1 December 006 1 Technical overview Content SMS4DC Software link calculation Exercise 1 Point-to-point Radiocommunication Link A Radio
More informationRevision of Lecture One
Revision of Lecture One System blocks and basic concepts Multiple access, MIMO, space-time Transceiver Wireless Channel Signal/System: Bandpass (Passband) Baseband Baseband complex envelope Linear system:
More informationAntennas and Propagation
Antennas and Propagation Chapter 5 Introduction An antenna is an electrical conductor or system of conductors Transmission - radiates electromagnetic energy into space Reception - collects electromagnetic
More informationCS263: Wireless Communications and Sensor Networks
CS263: Wireless Communications and Sensor Networks Matt Welsh Lecture 3: Antennas, Propagation, and Spread Spectrum September 30, 2004 2004 Matt Welsh Harvard University 1 Today's Lecture Antennas and
More informationIntroduction to wireless systems
Introduction to wireless systems Wireless Systems a.a. 2014/2015 Un. of Rome La Sapienza Chiara Petrioli Department of Computer Science University of Rome Sapienza Italy Background- Wireless Systems What
More informationPerformance Evaluation of Mobile Wireless Communication Channel Gangeshwar Singh 1 Vaseem Khan 2
IJSRD - International Journal for Scientific Research & Development Vol. 2, Issue 11, 2015 ISSN (online): 2321-0613 Performance Evaluation of Mobile Wireless Communication Channel Gangeshwar Singh 1 Vaseem
More informationAntennas and Propagation. Prelude to Chapter 4 Propagation
Antennas and Propagation Prelude to Chapter 4 Propagation Introduction An antenna is an electrical conductor or system of conductors for: Transmission - radiates electromagnetic energy into space (involves
More informationEEG 816: Radiowave Propagation 2009
Student Matriculation No: Name: EEG 816: Radiowave Propagation 2009 Dr A Ogunsola This exam consists of 5 problems. The total number of pages is 5, including the cover page. You have 2.5 hours to solve
More informationPart 4. Communications over Wireless Channels
Part 4. Communications over Wireless Channels p. 1 Wireless Channels Performance of a wireless communication system is basically limited by the wireless channel wired channel: stationary and predicable
More informationCS-435 spring semester Network Technology & Programming Laboratory. Stefanos Papadakis & Manolis Spanakis
CS-435 spring semester 2016 Network Technology & Programming Laboratory University of Crete Computer Science Department Stefanos Papadakis & Manolis Spanakis CS-435 Lecture preview Wireless Networking
More informationProbabilistic Link Properties. Octav Chipara
Probabilistic Link Properties Octav Chipara Signal propagation Propagation in free space always like light (straight line) Receiving power proportional to 1/d² in vacuum much more in real environments
More informationPerformance Evaluation of Mobile Wireless Communication Channel in Hilly Area Gangeshwar Singh 1 Kalyan Krishna Awasthi 2 Vaseem Khan 3
IJSRD - International Journal for Scientific Research & Development Vol. 2, Issue 11, 2015 ISSN (online): 2321-0613 Performance Evaluation of Mobile Wireless Communication Channel in Area Gangeshwar Singh
More informationMillimeter Wave Mobile Communication for 5G Cellular
Millimeter Wave Mobile Communication for 5G Cellular Lujain Dabouba and Ali Ganoun University of Tripoli Faculty of Engineering - Electrical and Electronic Engineering Department 1. Introduction During
More informationEKT 450 Mobile Communication System
EKT 450 Mobile Communication System Chapter 2: Mobile Radio Propagation Characteristics Dr. Azremi Abdullah Al-Hadi School of Computer and Communication Engineering azremi@unimap.edu.my 1 Introduction
More informationUnit 3 - Wireless Propagation and Cellular Concepts
X Courses» Introduction to Wireless and Cellular Communications Unit 3 - Wireless Propagation and Cellular Concepts Course outline How to access the portal Assignment 2. Overview of Cellular Evolution
More informationWireless Networked Systems. Lec #1b: PHY Basics
Wireless Networked Systems CS 795/895 - Spring 2013 Lec #1b: PHY Basics Tamer Nadeem Dept. of Computer Science Wireless Communication Page 2 Spring 2013 CS 795/895 - Wireless Networked Systems Radio Signal
More informationPlanning a Microwave Radio Link
8000 Lee Highway Falls Church, VA 22042 703-205-0600 www.ydi.com Planning a Microwave Radio Link By Michael F. Young President and CTO YDI Wireless Background Most installers know that clear line of sight
More informationMSIT 413: Wireless Technologies Week 3
MSIT 413: Wireless Technologies Week 3 Michael L. Honig Department of EECS Northwestern University October 2017 Why Study Radio Propagation? To determine coverage Can we use the same channels? Must determine
More informationBasic radio physics. Sebastian Büttrich, NSRC/ITU/wire.less.dk edit: June
Basic radio physics Sebastian Büttrich, NSRC/ITU/wire.less.dk edit: June 2011 http://creativecommons.org/licenses/by-nc-sa/3.0/ Electromagnetic Fields Electromagnetic forces act between electric charges
More informationUNIT- 7. Frequencies above 30Mhz tend to travel in straight lines they are limited in their propagation by the curvature of the earth.
UNIT- 7 Radio wave propagation and propagation models EM waves below 2Mhz tend to travel as ground waves, These wave tend to follow the curvature of the earth and lose strength rapidly as they travel away
More informationCALIFORNIA STATE UNIVERSITY, NORTHRIDGE FADING CHANNEL CHARACTERIZATION AND MODELING
CALIFORNIA STATE UNIVERSITY, NORTHRIDGE FADING CHANNEL CHARACTERIZATION AND MODELING A graduate project submitted in partial fulfillment of the requirements For the degree of Master of Science in Electrical
More informationUNDER STANDING RADIO FREQUENCY Badger Meter, Inc.
UNDER STANDING RADIO FREQUENCY UNDERSTANDING RADIO FREQUENCY Regional Sales Meeting March 1-2, 2011 Brian Fiut Sr. Product Manager Itron Inc. Liberty Lake, WA August 25, 2010 RADIO PROPAGATION Radio consists
More informationContents. ITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications. Transmission Media and Spectrum.
2 ITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 3 August 2015
More informationITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications
ITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 3 August 2015
More informationMobile Radio Propagation Channel Models
Wireless Information Transmission System Lab. Mobile Radio Propagation Channel Models Institute of Communications Engineering National Sun Yat-sen University Table of Contents Introduction Propagation
More informationChannel Modelling ETIM10. Propagation mechanisms
Channel Modelling ETIM10 Lecture no: 2 Propagation mechanisms Ghassan Dahman \ Fredrik Tufvesson Department of Electrical and Information Technology Lund University, Sweden 2012-01-20 Fredrik Tufvesson
More informationRevision of Lecture One
Revision of Lecture One System block Transceiver Wireless Channel Signal / System: Bandpass (Passband) Baseband Baseband complex envelope Linear system: complex (baseband) channel impulse response Channel:
More informationWIRELESS COMMUNICATIONS PRELIMINARIES
WIRELESS COMMUNICATIONS Preliminaries Radio Environment Modulation Performance PRELIMINARIES db s and dbm s Frequency/Time Relationship Bandwidth, Symbol Rate, and Bit Rate 1 DECIBELS Relative signal strengths
More information292 P a g e. (IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 4, No.
Wideband Parameters Analysis and Validation for Indoor radio Channel at 60/70/80GHz for Gigabit Wireless Communication employing Isotropic, Horn and Omni directional Antenna E. Affum 1 E.T. Tchao 2 K.
More informationPropagation Mechanism
Propagation Mechanism ELE 492 FUNDAMENTALS OF WIRELESS COMMUNICATIONS 1 Propagation Mechanism Simplest propagation channel is the free space: Tx free space Rx In a more realistic scenario, there may be
More informationLecture 1 Wireless Channel Models
MIMO Communication Systems Lecture 1 Wireless Channel Models Prof. Chun-Hung Liu Dept. of Electrical and Computer Engineering National Chiao Tung University Spring 2017 2017/3/2 Lecture 1: Wireless Channel
More informationDECT ARCHITECTURE PROPOSAL FOR A CONSTRUCTION SITE
ECT ARCHITECTURE PROPOSAL FOR A CONSTRUCTION SITE Silvia Ruiz, Ramón Agustí epartment of Signal Theory and Communications (UPC) C/Gran Capitán s/n, módul 4 08034 Barcelona (SPAIN) Email: ramon, silvia@xaloc.upc.es
More informationRadio propagation modeling on 433 MHz
Ákos Milánkovich 1, Károly Lendvai 1, Sándor Imre 1, Sándor Szabó 1 1 Budapest University of Technology and Economics, Műegyetem rkp. 3-9. 1111 Budapest, Hungary {milankovich, lendvai, szabos, imre}@hit.bme.hu
More informationSignal Propagation Measurements with Wireless Sensor Nodes
F E D E R Signal Propagation Measurements with Wireless Sensor Nodes Joaquim A. R. Azevedo, Filipe Edgar Santos University of Madeira Campus da Penteada 9000-390 Funchal Portugal July 2007 1. Introduction
More informationSimplified Reference Model
ITCE 720A Autonomic Wireless Networking (Fall, 2009) Mobile Communications Prof. Chansu Yu chansuyu@postech.ac.kr c.yu91@csuohio.edu Simplified Reference Model Mobile Terminals P ro t o c o l S ta c k
More informationDEVELOPMENT OF SOFTWARE FOR THE BASIC LINE-OF-SIGHT PARAMETERS CALCULATION
DEVELOPMENT OF SOFTWARE FOR THE BASIC LINE-OF-SIGHT PARAMETERS CALCULATION,, {abidur@nstu.edu.bd, zmozumder@du.ac.bd} Abstract: In this paper we have developed a software by which the general parameter
More informationλ iso d 4 π watt (1) + L db (2)
1 Path-loss Model for Broadcasting Applications and Outdoor Communication Systems in the VHF and UHF Bands Constantino Pérez-Vega, Member IEEE, and José M. Zamanillo Communications Engineering Department
More informationAnalysing Radio Wave Propagation Model for Indoor Wireless Communication
Analysing Radio Wave Propagation Model for Indoor Wireless Communication Phyo Thu Zar Tun, Aye Su Hlaing Abstract for several wireless communication technologies, many propagation models have been presented
More informationKing Fahd University of Petroleum & Minerals Computer Engineering Dept
King Fahd University of Petroleum & Minerals Computer Engineering Dept COE 543 Mobile and Wireless Networks Term 0 Dr. Ashraf S. Hasan Mahmoud Rm -148-3 Ext. 174 Email: ashraf@ccse.kfupm.edu.sa 4//003
More informationBasic Propagation Theory
S-7.333 POSTGRADUATE COURSE IN RADIO COMMUNICATIONS, AUTUMN 4 1 Basic Propagation Theory Fabio Belloni S-88 Signal Processing Laboratory, HUT fbelloni@hut.fi Abstract In this paper we provide an introduction
More information3C5 Telecommunications. what do radios look like? mobile phones. Linda Doyle CTVR The Telecommunications Research Centre
3C5 Telecommunications what do radios look like? Linda Doyle CTVR The Telecommunications Research Centre ledoyle@tcd.ie Oriel/Dunlop House 2009 mobile phones talk is cheap.. bluetooth 3G WLAN/802.11 GSM
More informationEC 551 Telecommunication System Engineering. Mohamed Khedr
EC 551 Telecommunication System Engineering Mohamed Khedr http://webmail.aast.edu/~khedr 1 Mohamed Khedr., 2008 Syllabus Tentatively Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week
More informationMobile and Wireless Networks Course Instructor: Dr. Safdar Ali
Mobile and Wireless Networks Course Instructor: Dr. Safdar Ali BOOKS Text Book: William Stallings, Wireless Communications and Networks, Pearson Hall, 2002. BOOKS Reference Books: Sumit Kasera, Nishit
More informationInvestigation of building Penetration Loss for GSM Signals into Selected Building Structures in Kaduna
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p- ISSN: 2278-8735.Volume 10, Issue 4, Ver. I (Jul - Aug.2015), PP 56-60 www.iosrjournals.org Investigation of building
More informationELEC-E7120 Wireless Systems Weekly Exercise Problems 5
ELEC-E7120 Wireless Systems Weekly Exercise Problems 5 Problem 1: (Range and rate in Wi-Fi) When a wireless station (STA) moves away from the Access Point (AP), the received signal strength decreases and
More informationECE 476/ECE 501C/CS Wireless Communication Systems Winter Lecture 6: Fading
ECE 476/ECE 501C/CS 513 - Wireless Communication Systems Winter 2003 Lecture 6: Fading Last lecture: Large scale propagation properties of wireless systems - slowly varying properties that depend primarily
More informationWireless Propagation
Wireless Propagation Signal Strength Measure signal strength in dbw = 10*log(Power in Watts) dbm = 10*log(Power in mw) 802.11 can legally transmit at 10dBm (1W). Most 802.11 PCMCIA cards transmit at 20dBm.
More informationUnguided Transmission Media
CS311 Data Communication Unguided Transmission Media by Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur E-mail: manaskhatua@iitj.ac.in Web: http://home.iitj.ac.in/~manaskhatua http://manaskhatua.github.io/
More informationInternational Journal of Advance Engineering and Research Development
Scientific Journal of Impact Factor (SJIF) : 3.134 ISSN (Print) : 2348-6406 ISSN (Online): 2348-4470 International Journal of Advance Engineering and Research Development COMPARATIVE ANALYSIS OF THREE
More informationRRC Vehicular Communications Part II Radio Channel Characterisation
RRC Vehicular Communications Part II Radio Channel Characterisation Roberto Verdone Slides are provided as supporting tool, they are not a textbook! Outline 1. Fundamentals of Radio Propagation 2. Large
More informationMultipath fading effects on short range indoor RF links. White paper
ALCIOM 5, Parvis Robert Schuman 92370 CHAVILLE - FRANCE Tel/Fax : 01 47 09 30 51 contact@alciom.com www.alciom.com Project : Multipath fading effects on short range indoor RF links DOCUMENT : REFERENCE
More informationPropagation mechanisms
RADIO SYSTEMS ETIN15 Lecture no: 2 Propagation mechanisms Ove Edfors, Department of Electrical and Information Technology Ove.Edfors@eit.lth.se Contents Short on db calculations Basics about antennas Propagation
More informationEstimation of Pathloss in Femtocells for Indoor Environments
www.ijcsi.org 128 Estimation of Pathloss in Femtocells for Indoor Environments Hasnain Kashif 1, Usman Rafique 2, Ateeq Ur Rehman 3 and Ayaz Umer 4 1 Department of Electrical Engineering, COMSATS Institute
More informationEmpirical Path Loss Models
Empirical Path Loss Models 1 Free space and direct plus reflected path loss 2 Hata model 3 Lee model 4 Other models 5 Examples Levis, Johnson, Teixeira (ESL/OSU) Radiowave Propagation August 17, 2018 1
More informationEITN85, FREDRIK TUFVESSON ELECTRICAL AND INFORMATION TECHNOLOGY
Wireless Communication Channels Lecture 2: Propagation mechanisms EITN85, FREDRIK TUFVESSON ELECTRICAL AND INFORMATION TECHNOLOGY Contents Free space loss Propagation mechanisms Transmission Reflection
More informationUnit 4 - Cellular System Design, Capacity, Handoff, and Outage
Unit 4 - Cellular System Design, Capacity, Handoff, and Outage Course outline How to access the portal Assignment. Overview of Cellular Evolution and Wireless Technologies Wireless Propagation and Cellular
More informationIntro to Radio Propagation,Antennas and Link Budget
Intro to Radio Propagation,Antennas and Link Budget Training materials for wireless trainers Marco Zennaro and Ermanno Pietrosemoli T/ICT4D Laboratory ICTP Behavior of radio waves There are a few simple
More information5.9 GHz V2X Modem Performance Challenges with Vehicle Integration
5.9 GHz V2X Modem Performance Challenges with Vehicle Integration October 15th, 2014 Background V2V DSRC Why do the research? Based on 802.11p MAC PHY ad-hoc network topology at 5.9 GHz. Effective Isotropic
More informationStudy of Factors which affect the Calculation of Co- Channel Interference in a Radio Link
International Journal of Electronic and Electrical Engineering. ISSN 0974-2174 Volume 8, Number 2 (2015), pp. 103-111 International Research Publication House http://www.irphouse.com Study of Factors which
More informationUltra Wideband Radio Propagation Measurement, Characterization and Modeling
Ultra Wideband Radio Propagation Measurement, Characterization and Modeling Rachid Saadane rachid.saadane@gmail.com GSCM LRIT April 14, 2007 achid Saadane rachid.saadane@gmail.com ( GSCM Ultra Wideband
More informationRadio Propagation In Outdoor Sub-Urban Environment:Effect On Gsm Signal Strength
The International Journal Of Engineering And Science (IJES) Volume 3 Issue 9 Pages 73-79 2014 ISSN (e): 2319 1813 ISSN (p): 2319 1805 Radio Propagation In Outdoor Sub-Urban Environment:Effect On Gsm Signal
More information