INTRODUCTION TO MOBILE COMMUNICATION SYSTEMS. by dr Tibor Kolos Széchenyi István University GYÕR
|
|
- Adele Flynn
- 6 years ago
- Views:
Transcription
1 INTRODUCTION TO MOBILE COMMUNICATION SYSTEMS by dr Tibor Kolos Széchenyi István University GYÕR
2 Mobile communications /10/2010 ESIGELEC_Rouen 2
3 Course overview Part 1. Introduction to mobile communications Part 2. Cell structure Part 3. The GSM system Part 4. Base Station Subsystem in GSM Part 5. Traffic engineering Part 6. Cell enhancement Part 7. Location services Part 8. (Laboratory work simulation) /10/2010 ESIGELEC_Rouen 3
4 Introduction to Mobile Communication Systems Part 1 Introduction by dr Tibor Kolos Széchenyi István University GYÕR
5 Content of this chapter A Brief History of Radio Communications General aspects of mobile communications The model of mobile communications Signal to transmit The radio interface (air interface) Developing of system architecture (2G >> 2.5G >> 3G) /10/2010 ESIGELEC_Rouen 5
6 A Brief History of Radio Communications /10/2010 ESIGELEC_Rouen 6
7 Why to speak about history? Commercial launch of GSM service GSM God has Sent Mobile 100 years evolution???!!! Telecom engineers must know milestones of this developing process!!! /10/2010 ESIGELEC_Rouen 7
8 Industrial environment At the end of 19th century: Steam engine Electric motor Metro line in Budapest Telegraph and phone networks Shipping lines to America No communications with ships! Ericsson "Eiffel Tower" Telephone ca The American Museum of Radio and Electricity /10/2010 ESIGELEC_Rouen 8
9 The beginning Maxwell equations H.R.Hertz: generation and detecting of electromagnetic wave Guglielmo Marconi: wireless telegraph to a ship /10/2010 ESIGELEC_Rouen 9
10 Guglielmo Marconi /10/2010 ESIGELEC_Rouen 10
11 First steps Marconi: transatlantic radio telegraph transmission (3,000 km ) Reginald Fessenden: human voice (AM) Fessenden: first radio broadcasting (Maryland, 15 miles.) Marconi: Commercial radio transmission Bell Telephone Co.: radio transmission from Virginia to France, -Panama, -Hawaii /10/2010 ESIGELEC_Rouen 11
12 Early mobile systems Detroit police (2MHz, AM, one-way)..development of technology: valves New York police (two-way radio) Edwin H. Armstrong: frequency mod. RF bandwidth: 120 khz, speech bandwidth: 3 khz Motorway police (FM), Connecticut /10/2010 ESIGELEC_Rouen 12
13 Military telegraph station 1901 Source: Western Electrician, July 27, 1901, page 51: /10/2010 ESIGELEC_Rouen 13
14 Radiotelephony for railroads (1914) Source: Electrical World, May 30, 1914, page 1269: /10/2010 ESIGELEC_Rouen 14
15 Military radio (WW I.) Source: Look Ma, no Wires /10/2010 ESIGELEC_Rouen 15
16 Old receivers /10/2010 ESIGELEC_Rouen 16
17 World War II. Military applications of mobile systems Aim of development: protection against Interference Unauthorised reception Modulation: AM or FM? Results of developments: Handheld FM transceivers (walkie-talkie) First steps to spread spectrum technology (SFH-SS) /10/2010 ESIGELEC_Rouen 17
18 Commercial mobile services After military developments: Increasing demands for civil applications (FM) Frequency bands: 40 MHz and 150 MHz Operation mode: simplex ( push to talk ) PMR: Private/Professional Mobile Radio (dispatch services: police, taxi, ambulance, etc.) PLMR: Public Land Mobile Radio (~100 subscriber/carrier, connected to PSTN) /10/2010 ESIGELEC_Rouen 18
19 Increasing of capacity 1950: Spectrum leakage (150 MHz band) Increasing of capacity: decreasing of channel spacing instead of 120 khz: 60 khz, (later 30 or 25 khz) decreasing of interference protection, noise! decreasing of frequency stability, receiver selectivity Introduction of trunk system (FDMA) Frequency reuse (later cellular system) /10/2010 ESIGELEC_Rouen 19
20 Car phone systems 1960th: duplex mobile systems MTS, IMTS (Improved Mobile Telephone Service) Large covered area high transmitter output power 1970th: increasing demands for the car phone, ( zero-generation system) The transceiver was built in a car (or in a suitcase) Cell radius: km No handover (it wasn t necessary.) Limited capacity /10/2010 ESIGELEC_Rouen 20
21 Portable phone (~ 1970) /10/2010 ESIGELEC_Rouen 21
22 First generation systems 1980th: Launch of cellular public mobile phone systems Aim: speech transmission Technology for 1G system: Cellular, FDMA trunking, analogue FM NMT (Nordic Mobile Telephone system) AMPS (Advanced Mobile Phone System) TACS (Total Access Communication System) Radiocomm-2000 C-netz FI USA GB FR GER /10/2010 ESIGELEC_Rouen 22
23 Disadvantages of 1G systems System concept and architecture: from 70th No real encryptions on air interface Made for speech transmission Limited data transmission Limited capacity, low spectrum efficiency Incompatible systems No European roaming /10/2010 ESIGELEC_Rouen 23
24 Second generation systems (1) Different technologies for 2G in America and in Europe CEPT* established the GSM workgroup Group Spéciale Mobile, later Global System for Mobile The aim: to outwork a common European standard for the Pan-European public mobile phone system Question to decide: analogue or digital system? *CEPT: European Conference of Postal and Telecommunications Administrations /10/2010 ESIGELEC_Rouen 24
25 Second generation systems (2) Successful trials of the digital system TDMA trunk system (TDMA -FDMA) Enhanced services Speech or data transmission, Encryption Better spectrum efficiency Commercial 2G service by GSM system /10/2010 ESIGELEC_Rouen 25
26 Advantages of 2G systems Better spectrum efficiency Large capacity (900 MHz and 1800MHz band) Digital modulation in the air interface Error correction Good speech and data transmission quality Encryption Protection against fraud Big market low equipment and service prices European roaming today not only in Europe! Base of the future planned systems (2.5G, 3G.) /10/2010 ESIGELEC_Rouen 26
27 Disadvantages of 2G systems Designed for speech (and data) transmission Low bit rate (14.4 kbit/s) data transmission Limited content services No global roaming /10/2010 ESIGELEC_Rouen 27
28 Systems beyond 2G (today) 2.5 G designed for increased data transmission Up to 384 kbit/s Based on air interface of 2G 3G designed for high speed data transmission Up to 2Mbit/s New air interface, based on CDMA multiple access Global roaming (???...) ( doesn t exists..) 3.5G increased data transmission capability (7,2 14,4 Mbit/s) Modified air interface (HSDPA, HSUPA) 4 G future planned system (up to Mbit /s????...) LTE (Long Term Evolution) WiMax (Worldwide Interoperability For Microwave Access) (????) /10/2010 ESIGELEC_Rouen 28
29 Useful links to the history _lectures/lecture7/cellular/cell_hist.html _lectures/lecture6/marconi/marconi.html htm Homework: Find some technical descriptions about Marconi s radio transmitter and receiver! /10/2010 ESIGELEC_Rouen 29
30 This is the end of the historical overview! Let see some General aspects of mobile communications /10/2010 ESIGELEC_Rouen 30
31 Wireless communications (1) Wireless: transmission by radiated EM waves Fix (Point to point, point to multipoint) Mobile WLAN (IEEE GHz???) Based on computer networks Mobile phone systems (GSM, UMTS..) Based on phone networks Not only phone services!!! WLAN??? Mobile phone Are they competitive or cooperative systems??? /10/2010 ESIGELEC_Rouen 31
32 Wireless communications (2) Wireless in telecommunication systems Last kilometres (Mobile phone systems, GSM) Last hundred meters (DECT) Last ten meters (WLAN) Last meters (Bluetooth) Last centimetres (RFID) All above apply radiated electromagnetic waves /10/2010 ESIGELEC_Rouen 32
33 Mobile phone systems PRIVATE (DLMN) PUBLIC (PLMN) Police Emergency Railway Taxi Highway patrol Mobile phone limited coverage global coverage /10/2010 ESIGELEC_Rouen 33
34 Mobile communications (1) The service provider s approach: Increasing number of customers (>100%!!!) Wide scale of services (voice + data) Mobile communications = business /10/2010 ESIGELEC_Rouen 34
35 Mobile communications (2) The customer s approach: As a user of network, wants to have access to any other user anytime anywhere to change any kind of information (speech, picture, text) /10/2010 ESIGELEC_Rouen 35
36 Mobile communications (3) Services expected by a customer high quality speech, emergency call + location service SMS, data transmission, Internet browsing, m-commerce, music, video download games (bit rate???) /10/2010 ESIGELEC_Rouen 36
37 Mobile communications (4) The system engineer s approach Marketing Service Technology (telecom and production) Ethics and law Environmental protection EMC Health issues Visual environment /10/2010 ESIGELEC_Rouen 37
38 Statistics (1) Number of service providers Technology (analogue, digital) Coverage (2G, 2.5G, 3G) (geographical, or % of inhabitants) Number of subscribers (active SIM cards) Penetration (% of population) Growth (during 1 month, or 1 year) /10/2010 ESIGELEC_Rouen 38
39 Statistics (2) HUNGARY Mobile phone 31/08/2010 Number of operators: 3 Number of subscribers: Millions Penetration: 118,2 % (????) Growth: 99,6 % (1 month) 99,8 % (1 year) source: Homework: collect statistics about French mobile phone operators /10/2010 ESIGELEC_Rouen 39
40 Statistics (2) HUNGARY Mobile internet 31/08/2010 Number of operators: Technology: GPRS, UMTS, HSPA Number of subscribers: (T-Mobil, Telenor, Vodafone) Growth: Avarage traffic: Coverage: 157 % (12 month!) 1.35 GByte/subs/month see maps on next pages!!! source: Homework: collect statistics about French mobile phone operators! /10/2010 ESIGELEC_Rouen 40
41 Telenor GPRS coverage Indoor Outdoor /10/2010 ESIGELEC_Rouen 41
42 Telenor EDGE coverage Indoor Outdoor /10/2010 ESIGELEC_Rouen 42
43 Telenor UMTS coverage Indoor Outdoor /10/2010 ESIGELEC_Rouen 43
44 Generations of mobile systems by data transmission capability 0G speech transmission only, pure services 1G speech + pure data transmission 2G speech = data transmission (14.4 kbit/s) 2.5G increased data rate ( kbit/s) 3G high data rate (up to 2 Mbit/s) 3.5 G increased high data rate (up to or >14.4 Mbit/s) 4G very high data rate ( > 100 Mbit/s) (?) /10/2010 ESIGELEC_Rouen 44
45 Technology beyond 2G (1) 2G GSM 9.6 kbit/s 1 timeslot GSM 14.4 kbit/s 1 timeslot 2.5G HSCSD kbit/s 2 4 timeslots GPRS up to 100 kbit/s 2 8 timeslots EDGE up to 384 kbit/s new modulation 3G UMTS up to 2 Mbit/s spread spectrum 3.5 G HSDPA/UPA 7,2 (14,4) Mbit/s new modulation 4G LTE and/or WiMax????????? MIMO technology /10/2010 ESIGELEC_Rouen 45
46 Technology beyond 2G (2) HSCSD High Speed Circuit Switched Data Maximum 4 x 14.4 kbit /s Software changing in the fix network >> cheep! GPRS General Packet Radio Service Few new hardware + new software in the fix network EDGE Enhanced Digital GSM Evolution Maximum 384 kbit /s >> adaptive bit rate! New hardware on BTS-s >> for extensions only! Generates demands on high bit rate >> 3G /10/2010 ESIGELEC_Rouen 46
47 Technology beyond 2G (3) UMTS Universal Mobile Telecommunications System 3G services, maximum 2Mb/s New air interface spread spectrum technology New BTS equipment, High capacity data transmission links in the fix network For extension! HSDPA High-Speed Downlink Packet Access HSUPA High-Speed Uplink Packet Access Based on UMTS hardware New (higher level) modulation, new protocol /10/2010 ESIGELEC_Rouen 47
48 Technology beyond 2G (4) LTE Long Term Evolution) WiMax Worldwide Interoperability for Microwave Access Competitive systems 4G services New telecom technology in the air interface (MIMO) /10/2010 ESIGELEC_Rouen 48
49 The model of mobile communications /10/2010 ESIGELEC_Rouen 49
50 Model of mobile communications (1) Information in Information out Source encoding Source decoding Channel Transmitter encoding Channel Receiver decoding Modulation RF channel Demodulation /10/2010 ESIGELEC_Rouen 50
51 Model of mobile communications (2) Information in Information out Source encoding Source decoding Channel encoding interference noise Channel decoding Modulation RF channel Demodulation /10/2010 ESIGELEC_Rouen 51
52 Model of mobile communications (3) Source coding Speech coding (compression) Encryption (??) Channel coding Error correction Adding redundancy Interleaving Modulation of RF carrier (spectrum efficiency!!!) Multiple access /10/2010 ESIGELEC_Rouen 52
53 Signal processing (1) (old analogue systems) Speech Bandwidth limitation Analogue modulation RF carrier (analogue FM) /10/2010 ESIGELEC_Rouen 53
54 Signal processing (2) (digital systems) Speech Picture Data A/D, speech coding (A/D), picture coding Encryption, error coding Digital modulation Modulated RF carrier /10/2010 ESIGELEC_Rouen 54
55 Signal to transmit /10/2010 ESIGELEC_Rouen 55
56 Signal to transmit (1) Analogue Digital upper limit continuous discrete lower limit 2, 4, 8, 16, 64,..levels /10/2010 ESIGELEC_Rouen 56
57 Signal to transmit (2) Human speech Analogue signal Frequency band Dynamics Quality measurement: S/N (obj.).. (subj.) Data Digital signal Bit rate (or symbol rate) Quality: BER ( obj.) /10/2010 ESIGELEC_Rouen 57
58 Signal to transmit (3) Bla..bla..bla ANALOGUE TRANSMISSION SYSTEM Bla..bla..bla /10/2010 ESIGELEC_Rouen 58
59 Signal to transmit (4) DIGITAL TRANSMISSION SYSTEM /10/2010 ESIGELEC_Rouen 59
60 Signal to transmit (5) DIGITAL TRANSMISSION SYSTEM Bla..bla..bla A/D DIGITAL TRANSMISSION SYSTEM D/A Bla..bla..bla analogue digital analogue /10/2010 ESIGELEC_Rouen 60
61 The quality Q Q analogue digital??? RF attenuation RF attenuation /10/2010 ESIGELEC_Rouen 61
62 Bit rates for speech transmission ISDN: 64 kbit/s (waveform coding) GSM: 13 kbit/s (full rate compressed, hibrid vocoder) GSM: 6.5 kbit/s (half rate compressed, hibrid vocoder) TETRA: 4.8 kbit/s Quality! /10/2010 ESIGELEC_Rouen 62
63 Bit rates for data transmission Internet browsing, download Videoconferencing Video telephony Teleshopping Images/sound files Financial services Information services Voice???? Bit rate 10 kbps 100 kbps 1Mbps 2Mbps /10/2010 ESIGELEC_Rouen 63
64 The radio interface (air interface) /10/2010 ESIGELEC_Rouen 64
65 Frequency spectrum From 0 Hz up to Specification: In frequency (Hz) In wavelength (m) Radio frequency band: 9 khz..300 GHz Be careful: 9 khz frequency Sound (produced by loudspeaker) EM wave (produced by LC resonant circuit) /10/2010 ESIGELEC_Rouen 65
66 Electromagnetic Spectrum Radio frequences /10/2010 ESIGELEC_Rouen 66 Source:
67 Properties of electromagnetic waves Frequency Wavelength Properties Applications Antenna 10 khz 30 km under water submarine H loop 100 khz 3 km into the earth 70 khz clock H ferrite 1MHz 300 m surface AM broadcast H ferrite 10 MHz 30 m reflections (ionosphera) AM broadcast H ferrite 30 MHz 10 m reflections (ionosphera) 27 MHz CB E wire monop 100 MHz 3 m direct FM broadcast E dipole 300 MHz 1 m direct Private mobile E monopole 1 GHz 30 cm reflections (buildings) GSM E monopole 3 GHz 10 cm direct radar, telecom Parabolic 10 GHz 3 cm direct, rain attenuation radar, telecom Parabolic 30 GHz 10 mm direct, rain attenuation telecom Parabolic 100 GHz 3 mm direct, rain attenuation?????? array /10/2010 ESIGELEC_Rouen 67
68 Spectrum management International level ITU (International Telecommunication Union) National level National frequency management authorities National frequency usage table International cooperation Company level Mobile service providers Army /10/2010 ESIGELEC_Rouen 68
69 Frequency allocation (US) Visit the homepage: /10/2010 ESIGELEC_Rouen 69
70 Choose a proper carrier! (1)( Frequency bands: licensed and license free Licensed bands Near all bands Supervisor: National Telecommunication Authority Administrative protection against interfering signals Limits for effective antenna height and ERP The user have to pay for the usage of spectrum /10/2010 ESIGELEC_Rouen 70
71 Choose a proper carrier! (2)( License free bands 27 MHz CB radio, MHz SRD 2.4 GHz and 5 GHz ISM bands, (Industrial, Scientific and Medical) No license, no payment, no protection! Hard limitations for equipment specifications! TX: output power limit, spurious signal limit RX: spurious signal limit, blocking EN standards for conformity and EMC measurements! CE Spread Spectrum technology to avoid interference 5 GHz WLAN: DFS against radar interference (Dynamic Frequency Selection) /10/2010 ESIGELEC_Rouen 71
72 PSTN ISDN PDN System architecture of mobile networks Radio interface Abi s A FIX PART OF MOBILE COMMUNICATION SYSTEM MS BSS SMSS OMSS /10/2010 ESIGELEC_Rouen 72
73 Functions of radio interface Speech coding (compression) Encryption Error correction Generation of RF carrier Modulation Multiple access /10/2010 ESIGELEC_Rouen 73
74 Radio interface: RF generation Frequency bands for public mobile phone networks 450MHz band: NMT (analogue) 900 MHz band: NMT (analogue) 900 MHz band: GSM (digital) and MHz (124 carriers, Standard GSM) and MHz (174 carriers, Extended GSM) 1800 MHz band: GSM (digital) and MHz 1900 MHz band: GSM in America 2000 MHz band: UMTS (spread spectrum) /10/2010 ESIGELEC_Rouen 74
75 Radio interface: modulation Analogue frequency modulation (FM) 1G Digital GMSK modulation 2G Digital 8PSK phase modulation 2.5G Spread spectrum technology 3G Direct sequence spread spectrum (DS-SS) Frequency hopping (FH-SS) OFDM system /10/2010 ESIGELEC_Rouen 75
76 Radio interface: multiple access BTS /10/2010 ESIGELEC_Rouen 76 Abis
77 Multiple access technologies: FDMA FDMA Frequency Division Multiple Access /10/2010 ESIGELEC_Rouen 77
78 Multiple access technologies: TDMA TDMA Time Division Multiple Access /10/2010 ESIGELEC_Rouen 78
79 Compare FDMA and TDMA! FDMA TDMA Frequency Division Multiple Access Time Division Multiple Access /10/2010 ESIGELEC_Rouen 79
80 Multiple access technologies: TDMA - FDMA /10/2010 ESIGELEC_Rouen 80
81 Multiple access technologies: CDMA Code Division Multiple Access /10/2010 ESIGELEC_Rouen 81
82 Solutions for radio interface 1G: 2G: 2.5G: 2.5G: FM analogue modulation, FDMA NMT 450, AMPS, C-netz. GMSK digital modulation, TDMA-FDMA GSM GMSK digital modulation, TDMA-FDMA GSM-GPRS 8PSK digital modulation, TDMA-FDMA GSM-EDGE 3G: Spread spectrum techn. W-CDMA UMTS cdma2000 is a 2G system! /10/2010 ESIGELEC_Rouen 82
83 Developing of system architecture 2G >> 2.5G >> 3G /10/2010 ESIGELEC_Rouen 83
84 Repetition! Radio interface System architecture Abi s A PSTN ISDN PDN FIX PART OF MOBILE COMMUNICATION SYSTEM MS BSS SMSS OMSS /10/2010 ESIGELEC_Rouen 84
85 Um GSM system architecture (1) Abis A PSTN ISDN PDN MS BSS SMSS OMSS /10/2010 ESIGELEC_Rouen 85
86 Um GSM system architecture (2) Abis A PSTN ISDN PDN BSC BSC EIR MSC GCR VLR HLR AUC MS BTS-s. BSC BSS MSC VLR SMSS OMSS /10/2010 ESIGELEC_Rouen 86
87 Um GPRS system architecture Abis A EIR VLR PSTN ISDN PDN BSC BSC MSC GCR HLR AUC BTS-s MS BSS. BSC OMSS SGSN MSC Backbone GGSN VLR SMSS /10/2010 ESIGELEC_Rouen 87 IP
88 Um 3G system architecture (1) BSS Abis A EIR VLR PSTN ISDN PDN BSC MSC HLR BSC GCR AUC. RNC SGSN MSC VLR MS Node B IP Backbone OMSS GGSN SMSS /10/2010 ESIGELEC_Rouen 88 IP
89 Um 3G system architecture (2) Abis A PSTN ISDN PDN BSS EIR VLR BSC MSC HLR BSC GCR AUC. RNC SGSN MSC VLR MS Node B UTRAN Iub OMSS IP Backbone GGSN SMSS /10/2010 ESIGELEC_Rouen 89 IP
90 List of Acronyms BSC BSS EIR GGSN HLR MSC RNC SGSN UMTS UTRAN VLR Base station controller Base station system Equipment identity register Gateway GPRS support node Home location register Mobile services switching centre Radio network controller Serving GPRS support node Universal Mobile Telecommunications Systems Universal Terrestrial Radio Access Network Visitor location register /10/2010 ESIGELEC_Rouen 90
91 Contact Lecturer: dr Tibor KOLOS Szechenyi Istvan University Gyor HUNGARY Web: /10/2010 ESIGELEC_Rouen 91
92 ! THANKS FOR THE ATTENTION! /10/2010 ESIGELEC_Rouen 92
Outline / Wireless Networks and Applications Lecture 18: Cellular: 1G, 2G, and 3G. Advanced Mobile Phone Service (AMPS)
Outline 18-452/18-750 Wireless Networks and Applications Lecture 18: Cellular: 1G, 2G, and 3G 1G: AMPS 2G: GSM 2.5G: EDGE, CDMA 3G: WCDMA Peter Steenkiste Spring Semester 2017 http://www.cs.cmu.edu/~prs/wirelesss17
More informationUMTS: Universal Mobile Telecommunications System
Department of Computer Science Institute for System Architecture, Chair for Computer Networks UMTS: Universal Mobile Telecommunications System Mobile Communication and Mobile Computing Prof. Dr. Alexander
More informationMobile Communication and Mobile Computing
Department of Computer Science Institute for System Architecture, Chair for Computer Networks Mobile Communication and Mobile Computing Prof. Dr. Alexander Schill http://www.rn.inf.tu-dresden.de Structure
More informationChapter 1 INTRODUCTION
Chapter 1 INTRODUCTION 1 The History of Mobile Radio Communication (1/3) 1880: Hertz Initial demonstration of practical radio communication 1897: Marconi Radio transmission to a tugboat over an 18 mi path
More informationChapter 5 Acknowledgment:
Chapter 5 Acknowledgment: This material is based on the slides formatted by Dr Sunilkumar S. Manvi and Dr Mahabaleshwar S. Kakkasageri, the authors of the textbook: Wireless and Mobile Networks, concepts
More informationPage 1. Problems with 1G Systems. Wireless Wide Area Networks (WWANs) EEC173B/ECS152C, Spring Cellular Wireless Network
EEC173B/ECS152C, Spring 2009 Wireless Wide Area Networks (WWANs) Cellular Wireless Network Architecture and Protocols Applying concepts learned in first two weeks: Frequency planning, channel allocation
More informationMobile Network Evolution Part 1. GSM and UMTS
Mobile Network Evolution Part 1 GSM and UMTS GSM Cell layout Architecture Call setup Mobility management Security GPRS Architecture Protocols QoS EDGE UMTS Architecture Integrated Communication Systems
More informationMOBILE COMPUTING 4/8/18. Basic Call. Public Switched Telephone Network - PSTN. CSE 40814/60814 Spring Transit. switch. Transit. Transit.
MOBILE COMPUTING CSE 40814/60814 Spring 2018 Public Switched Telephone Network - PSTN Transit switch Transit switch Long distance network Transit switch Local switch Outgoing call Incoming call Local switch
More informationWireless Telecommunication Systems GSM as basis of current systems Enhancements for data communication: HSCSD, GPRS, EDGE UMTS: Future or not?
Chapter 2 Technical Basics: Layer 1 Methods for Medium Access: Layer 2 Chapter 3 Wireless Networks: Bluetooth, WLAN, WirelessMAN, WirelessWAN Mobile Networks: GSM, GPRS, UMTS Chapter 4 Mobility on the
More informationCPET 565/499 Mobile Computing Systems. Mobile Wireless Networking Infrastructure & Technologies
CPET 565/499 Mobile Computing Systems Lecture 2 Mobile Networking Communication Infrastructures and Technologies Fall 202 A Specialty Course for Purdue University s M.S. in Technology Graduate Program
More informationChapter 1 INTRODUCTION
Introduction to Wireless & Mobile Systems Chapter 1 INTRODUCTION 1 The History of Mobile Radio Communication (1/4) 1880: Hertz Initial demonstration of practical radio communication 1897: Marconi Radio
More informationChapter 14. Cellular Wireless Networks
Chapter 14 Cellular Wireless Networks Evolu&on of Wireless Communica&ons 1901 Marconi: Trans-Atlantic wireless transmission 1906 Fessenden: first radio broadcast (AM) 1921 Detroit Police Dept wireless
More informationAPPLICATION PROGRAMMING: MOBILE COMPUTING [ INEA00112W ] Marek Piasecki PhD Wireless Telecommunication
APPLICATION PROGRAMMING: MOBILE COMPUTING [ INEA00112W ] Marek Piasecki PhD Wireless Telecommunication (W6/2013) What is Wireless Communication? Transmitting/receiving voice and data using electromagnetic
More informationMobile Communications I Chapter 1: Introduction and History. Applications History Development of wireless systems
Mobile Communications I Chapter 1: Introduction and History Applications History Development of wireless systems Wireless networks in comparison to fixed networks Higher loss-rates due to interference
More informationGSM and WCDMA RADIO SYSTEMS ETIN15. Lecture no: Ove Edfors, Department of Electrical and Information Technology
RADIO SYSTEMS ETIN15 Lecture no: 11 GSM and WCDMA Ove Edfors, Department of Electrical and Information Technology Ove.Edfors@eit.lth.se 2015-05-12 Ove Edfors - ETIN15 1 Contents (Brief) history of mobile
More informationRADIO SYSTEMS ETIN15. Lecture no: GSM and WCDMA. Ove Edfors, Department of Electrical and Information Technology
RADIO SYSTEMS ETIN15 Lecture no: 11 GSM and WCDMA Ove Edfors, Department of Electrical and Information Technology Ove.Edfors@eit.lth.se 1 Contents (Brief) history of mobile telephony Global System for
More informationWireless Telephony in Germany. Standardization of Networks. GSM Basis of Current Mobile Systems
Wireless Telephony in Germany Chapter 2 Technical Basics: Layer Methods for Medium Access: Layer 2 Chapter 3 Wireless Networks: Bluetooth, WLAN, WirelessMAN, WirelessWAN Mobile Telecommunication Networks:
More informationCHAPTER 13 CELLULAR WIRELESS NETWORKS
CHAPTER 13 CELLULAR WIRELESS NETWORKS 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
More informationAn Introduction to Wireless Technologies Part 2. F. Ricci
An Introduction to Wireless Technologies Part 2 F. Ricci Content Medium access control (MAC): FDMA = Frequency Division Multiple Access TDMA = Time Division Multiple Access CDMA = Code Division Multiple
More informationDeveloping Mobile Applications
Developing Mobile Applications GSM networks 1 carriers GSM 900 MHz 890-915 MHz 935-960 MHz up down 200 KHz 200 KHz 25 MHz 25 MHz 2 frequency reuse A D K B J L C H E G I F A 3 Reuse patterns 4/12 4 base
More informationMNA Mobile Radio Networks Mobile Network Architectures
MNA Mobile Radio Networks Mobile Network Architectures Roberto Verdone roberto.verdone@unibo.it +39 051 20 93817 Office Hours: Monday 4 6 pm (upon prior agreement via email) Slides are provided as supporting
More informationDimensioning, configuration and deployment of Radio Access Networks. part 1: General considerations. Agenda
Dimensioning, configuration and deployment of Radio Access Networks. part 1: General considerations Agenda Mobile Networks Standards Network Architectures Call Set Up Network Roll Out Site Equipment Distributed
More informationAmmar Abu-Hudrouss Islamic University Gaza
Wireless Communications n Ammar Abu-Hudrouss Islamic University Gaza ١ Course Syllabus References 1. A. Molisch,, Wiely IEEE, 2nd Edition, 2011. 2. Rappaport, p : Principles and Practice, Prentice Hall
More informationDifference Between. 1. Old connection is broken before a new connection is activated.
Difference Between Hard handoff Soft handoff 1. Old connection is broken before a new connection is activated. 1. New connection is activated before the old is broken. 2. "break before make" connection
More informationMobile Communication Systems. Part 7- Multiplexing
Mobile Communication Systems Part 7- Multiplexing Professor Z Ghassemlooy Faculty of Engineering and Environment University of Northumbria U.K. http://soe.ac.uk/ocr Contents Multiple Access Multiplexing
More informationCHAPTER4 CELLULAR WIRELESS NETWORKS
CHAPTER4 CELLULAR WIRELESS NETWORKS 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
More informationUnit 0: Brief history, present and future of the wireless communications
Unit 0: Brief history, present and future of the wireless communications Wireless communications course Ronal D. Montoya M. http://tableroalparque.weebly.com/radiocomunicaciones.html ronalmontoya5310@correo.itm.edu.co
More informationUnit V. Multi-User Radio Communication
Unit V Multi-User Radio Communication ADVANCED MOBILE PONE SERVICE (AMPS) 1906: 1 st radio transmission of Human voice. What s the medium? Used an RC circuit to modulate a carrier frequency that radiated
More informationGSM. 84 Theoretical and general applications
GSM GSM, GPRS, UMTS what do all of these expressions mean and what possibilities are there for data communication? Technical descriptions often contain abbreviations and acronyms. We have chosen to use
More informationINTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA
COMM.ENG INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA 9/9/2017 LECTURES 1 Objectives To give a background on Communication system components and channels (media) A distinction between analogue
More informationEE 577: Wireless and Personal Communications
EE 577: Wireless and Personal Communications Dr. Salam A. Zummo Lecture 1: Introduction 1 Common Applications of Wireless Systems AM/FM Radio Broadcast VHF and UHF TV Broadcast Cordless Phones (e.g., DECT)
More informationWireless and Mobile Network Architecture. Outline. Introduction. Cont. Chapter 1: Introduction
Wireless and Mobile Network Architecture Chapter 1: Introduction Prof. Yuh-Shyan Chen Department of Computer Science and Information Engineering National Taipei University Sep. 2006 Outline Introduction
More informationWireless WANS and MANS. Chapter 3
Wireless WANS and MANS Chapter 3 Cellular Network Concept Use multiple low-power transmitters (100 W or less) Areas divided into cells Each served by its own antenna Served by base station consisting of
More informationWireless and Mobile Network Architecture
Wireless and Mobile Network Architecture Chapter 1: Introduction Prof. Yuh-Shyan Chen Department of Computer Science and Information Engineering National Taipei University Sep. 2006 1 Outline Introduction
More informationCommunication Systems GSM
Communication Systems GSM Computer Science Organization I. Data and voice communication in IP networks II. Security issues in networking III. Digital telephony networks and voice over IP 2 last to final
More informationGSM System for Mobile
GSM System for Mobile GSM History In the mid 1980 s, most of Europe didn t have a cellular network. They weren t committed to analog. After many years of research, GSM was proposed around 1990. Covered
More informationDepartment of Computer Science & Technology 2014
Unit 1. Wireless Telecommunication Systems and Networks Short Questions 1. What is Electromagnetic spectrum? 2 State the purpose of Induction. 3. What is the range of Radio Frequency? 4. What are two parameters
More informationIntroduction to Cellular Networks: 1G/2G/3G
Introduction to Cellular Networks: 1G/2G/3G Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 Jain@cse.wustl.edu Audio/Video recordings of this class lecture are available at: 16-1 Overview
More informationIMT IMT-2000 stands for IMT: International Mobile Communications 2000: the frequency range of 2000 MHz and the year 2000
IMT-2000 IMT-2000 stands for IMT: International Mobile Communications 2000: the frequency range of 2000 MHz and the year 2000 In total, 17 proposals for different IMT-2000 standards were submitted by regional
More informationIntroduction to GSM. Introduction to GSM, page Development of GSM. History of GSM. Market situation. GSM s future development
Introduction to GSM, page 1 Introduction to GSM 1. Development of GSM History of GSM Market situation GSM s future development Services offered by GSM GSM specifications 2. OSI reference model 3. RF interface
More informationMobile Radio Communications
Session 1: Introduction Session 1, page 1 COMMUNICATIONS information source channel information sink Session 1, page 2 HISTORY: stone age Initial communications were wireless: human voice (air pressure)
More informationIS-95 /CdmaOne Standard. By Mrs.M.R.Kuveskar.
IS-95 /CdmaOne Standard By Mrs.M.R.Kuveskar. CDMA Classification of CDMA Systems CDMA SYSTEMS CDMA one CDMA 2000 IS95 IS95B JSTD 008 Narrow Band Wide Band CDMA Multiple Access in CDMA: Each user is assigned
More informationLong Term Evolution (LTE)
1 Lecture 13 LTE 2 Long Term Evolution (LTE) Material Related to LTE comes from 3GPP LTE: System Overview, Product Development and Test Challenges, Agilent Technologies Application Note, 2008. IEEE Communications
More informationMAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION (Autonomous) (ISO/IEC Certified)
WINTER 16 EXAMINATION Model Answer Subject Code: 17657 Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2)
More informationPage 1. What is a Survey? : Wireless Networks Lecture 8: Cellular Networks. Deliverables. Surveys. Cell splitting.
What is a Survey? 18-759: Wireless Networks Lecture 8: Cellular Networks Dina Papagiannaki & Peter Steenkiste Departments of Computer Science and Electrical and Computer Engineering Spring Semester 2009
More information2G Mobile Communication Systems
2G Mobile Communication Systems 2G Review: GSM Services Architecture Protocols Call setup Mobility management Security HSCSD GPRS EDGE References Jochen Schiller: Mobile Communications (German and English),
More informationAn Introduction to Wireless Technologies Part 2. F. Ricci 2008/2009
An Introduction to Wireless Technologies Part 2 F. Ricci 2008/2009 Content Multiplexing Medium access control Medium access control (MAC): FDMA = Frequency Division Multiple Access TDMA = Time Division
More informationTelephone network. Jouni Karvo, Raimo Kantola, Timo Kiravuo
Telephone network Jouni Karvo, Raimo Kantola, Timo Kiravuo Background World's largest machine; extends to all countries Huge economic and social importance Specialized in voice transmission Other applications
More informationGSM and Similar Architectures Lesson 04 GSM Base station system and Base Station Controller
GSM and Similar Architectures Lesson 04 GSM Base station system and Base Station Controller 1 GSM network architecture Radio subsystem (RSS) Network subsystem (NSS) Operation subsystem (OSS) 2 RSS Consists
More informationChapter 1 Acknowledgment:
Chapter 1 Acknowledgment: This material is based on the slides formatted by Dr Sunilkumar S. Manvi and Dr Mahabaleshwar S. Kakkasageri, the authors of the textbook: Wireless and Mobile Networks, concepts
More information1. Classify the mobile radio transmission systems. Simplex & Duplex. 2. State example for a half duplex system. Push to talk and release to listen.
1. Classify the mobile radio transmission systems. Simplex & Duplex. 2. State example for a half duplex system. Push to talk and release to listen. 3. State example for a Simplex system. Pager. 4. State
More informationMobilné systémy 3. generácie UMTS
Mobilné systémy 3. generácie UMTS Ing. Matúš Turcsány, PhD. turcsany@ktl.elf.stuba.sk KTL FEI STU 2009 Prehľad prednášok UMTS HSDPA, EUL HSPA evolution LTE LTE-Advanced Nasadené technológie GSM worldwide
More informationMohammad Hossein Manshaei 1393
Mohammad Hossein Manshaei manshaei@gmail.com 1393 GSM 2 GSM Architecture Frequency Band and Channels Frames in GSM Interfaces, Planes, and Layers of GSM Handoff Short Message Service (SMS) 3 subscribers
More informationBackground: Cellular network technology
Background: Cellular network technology Overview 1G: Analog voice (no global standard ) 2G: Digital voice (again GSM vs. CDMA) 3G: Digital voice and data Again... UMTS (WCDMA) vs. CDMA2000 (both CDMA-based)
More informationReferences. What is UMTS? UMTS Architecture
1 References 2 Material Related to LTE comes from 3GPP LTE: System Overview, Product Development and Test Challenges, Agilent Technologies Application Note, 2008. IEEE Communications Magazine, February
More informationMobile Radio Systems (Wireless Communications)
Mobile Radio Systems (Wireless Communications) Klaus Witrisal witrisal@tugraz.at Signal Processing and Speech Communication Lab, TU Graz Lecture 1 WS2015/16 (6 October 2016) Key Topics of this Lecture
More informationChapter 11. Mobile Telephony History. Mikael Olofsson 2004
Chapter 11 Mobile Telephony Mikael Olofsson 2004 Devices for wire-less two-way communication between individual users have been around for several tens of years, and they are usually called walkie-talkies.
More informationModeling and Dimensioning of Mobile Networks: from GSM to LTE. Maciej Stasiak, Mariusz Głąbowski Arkadiusz Wiśniewski, Piotr Zwierzykowski
Modeling and Dimensioning of Mobile Networks: from GSM to LTE Maciej Stasiak, Mariusz Głąbowski Arkadiusz Wiśniewski, Piotr Zwierzykowski Modeling and Dimensioning of Mobile Networks: from GSM to LTE GSM
More informationIMT-2000/UMTS delivering full BWA
IMT-2000/UMTS delivering full BWA Rémi THOMAS Directeur du projet réseau UMTS d Orange France Agenda 3G and IMT 2000 Family UMTS phase 1 principles From GSM to GSM/UMTS Key Technical Characteristics of
More informationWireless Networks Part I
ICT Technical Update Module Wireless Networks Part I Prof. Dr Harsha Sirisena Electrical and Computer Engineering University of Canterbury Outline Course Objective and Additional References Motivation
More informationWireless & Cellular Communications
Wireless & Cellular Communications Slides are adopted from Lecture notes by Professor A. Goldsmith, Stanford University. Instructor presentation materials for the book: Wireless Communications, 2nd Edition,
More informationChapter 8: GSM & CDAMA Systems
Chapter 8: GSM & CDAMA Systems Global System for Mobile Communication (GSM) Second Generation (Digital) Cellular System Operated in 900 MHz band GSM is also operated in 1800 MHz band and this version of
More informationIMT-2000 members UTRA-TDD and UTRA-FDD
IMT-2000 members UTRA-TDD and UTRA-FDD Dr. Christian Menzel, SIEMENS AG christian.menzel@icn.siemens.de Author Siemens AG, Munich Siemens AG 2000 IMT-2000_UTRA_TDD_FDD_1 UTRA (FDD + TDD)! IMT-2000 and
More informationChapter 7 GSM: Pan-European Digital Cellular System. Prof. Jang-Ping Sheu
Chapter 7 GSM: Pan-European Digital Cellular System Prof. Jang-Ping Sheu Background and Goals GSM (Global System for Mobile Communications) Beginning from 1982 European standard Full roaming in Europe
More informationWireless and mobile communication
Wireless and mobile communication Wireless communication Multiple Access FDMA TDMA CDMA SDMA Mobile Communication GSM GPRS GPS Bluetooth Content What is wireless communication? In layman language it is
More informationUNIT- 2. Components of a wireless cellular network
UNIT- 2 Components of a wireless cellular network These network elements may be divided into three groups. MS- Provides the user link to wireless network RBS, BSC The B.S system provides the wireless system
More informationThis tutorial is prepared for beginners to help them understand the basic-to-advanced concepts related to UMTS.
About the Tutorial The Universal Mobile Telecommunications System (UMTS), based on the GSM standards, is a mobile cellular system of third generation that is maintained by 3GPP (3 rd Generation Partnership
More informationCELLULAR COMMUNICATION AND ANTENNAS. Doç. Dr. Mehmet ÇİYDEM
CELLULAR COMMUNICATION AND ANTENNAS Doç. Dr. Mehmet ÇİYDEM mehmet.ciydem@engitek.com.tr, 533 5160580 1 CONTENT 1 ABOUT ENGİTEK 2 CELLULAR COMMUNICATION 3 BASE STATION ANTENNAS 4 5G CELLULAR COMMUNICATION
More informationCOMP327 Mobile Computing Session: Lecture Set 5 - Wireless Communication
COMP327 Mobile Computing Session: 2013-2014 Lecture Set 5 - Wireless Communication In this Lecture Set Review of the Evolution from 2G to 3G 2G Communications History, Multiplexing and Handoff GPS / GPRS
More informationICT 5305 Mobile Communications. Lecture - 6 April Dr. Hossen Asiful Mustafa
ICT 5305 Mobile Communications Lecture - 6 April 2016 Dr. Hossen Asiful Mustafa 4 types of handover 1 2 3 4 MS MS MS MS BTS BTS BTS BTS BSC BSC BSC MSC MSC Handover decision receive level BTS old receive
More informationMultiple Access Techniques
Multiple Access Techniques EE 442 Spring Semester Lecture 13 Multiple Access is the use of multiplexing techniques to provide communication service to multiple users over a single channel. It allows for
More informationCellular Network. Ir. Muhamad Asvial, MSc., PhD
Cellular Network Ir. Muhamad Asvial, MSc., PhD Center for Information and Communication Engineering Research (CICER) Electrical Engineering Department - University of Indonesia E-mail: asvial@ee.ui.ac.id
More information3G TECHNOLOGY WHICH CAN PROVIDE AUGMENTED DATA TRANSFER RATES FOR GSM STANDARTS AND THE MODULATION TECHNIQUES
3G TECHNOLOGY WHICH CAN PROVIDE AUGMENTED DATA TRANSFER RATES FOR GSM STANDARTS AND THE MODULATION TECHNIQUES Mustafa ALKAN Ejder ORUÇ Nur ERZEN Özgür GENÇ malkan@tk.gov.tr eoruc@tk.gov.tr nerzen@tk.gov.tr
More informationG 364: Mobile and Wireless Networking. CLASS 21, Mon. Mar Stefano Basagni Spring 2004 M-W, 11:40am-1:20pm, 109 Rob
G 364: Mobile and Wireless Networking CLASS 21, Mon. Mar. 29 2004 Stefano Basagni Spring 2004 M-W, 11:40am-1:20pm, 109 Rob Global System for Mobile Communications (GSM) Digital wireless network standard
More informationMOBILE COMPUTING. Public Switched Telephone Network - PSTN. Transit. switch. Long distance network
MOBILE COMPUTING CSE 40814/60814 Fall 2015 Public Switched Telephone Network - PSTN Transit switch Transit switch Long distance network Transit switch Local switch Outgoing call Incoming call Local switch
More informationECE 476/ECE 501C/CS Wireless Communication Systems Winter Lecture 1: Introduction
ECE 476/ECE 501C/CS 513 - Wireless Communication Systems Winter 2004 Lecture 1: Introduction Chapter 1 - Introduction to Wireless Communication Systems It is dangerous to put limits on wireless. Guglielmo
More informationRequirements for GPRS Evolution Towards Providing Third Generation Services
Requirements for GPRS Evolution Towards Providing Third Generation Services Håkan Olofsson Ericsson Radio Systems AB Outline GPRS Background GPRS Role in Future Communications Higher bit rates: EGPRS Improved
More informationSection A : example questions
2G1723 GSM Network and Services The exam will consist of two sections: section A (20p) and section B (8p). Section A consist of 20 multiple-choice questions (1p each), where exactly one answer is correct.
More informationGSM NCN-EG-01 Course Outline for GSM
GSM NCN-EG-01 Course Outline for GSM 1 Course Description: Good understanding of GSM technology and cellular networks is essential for anyone working in GSM or related areas. This course is structured
More informationAIRCOM Training is committed to providing our customers with quality instructor led Telecommunications Training.
Copyright 2002 AIRCOM International Ltd All rights reserved AIRCOM Training is committed to providing our customers with quality instructor led Telecommunications Training. This documentation is protected
More informationCSC344 Wireless and Mobile Computing. Department of Computer Science COMSATS Institute of Information Technology
CSC344 Wireless and Mobile Computing Department of Computer Science COMSATS Institute of Information Technology Wireless Cellular Networks: 2.5G and 3G 2.5G Data services over 2G networks GSM: High-speed
More informationWireless Broadband. IST 220, Dr. Abdullah Konak 4/27/ Blake Drive Reading, PA Prepared by: Dennis DeFrancesco
Wireless Broadband IST 220, Dr. Abdullah Konak 4/27/2005 500 Blake Drive Reading, PA 19601 Prepared by: Dennis DeFrancesco 1 Table Of Contents 1. Wireless Broadband Overview... 3 1.1. Beginnings... 3 1.2.
More informationIntroduction to Wireless Communications
Wireless Information Transmission System Lab. Introduction to Wireless Communications Institute of Communications Engineering National Sun Yat-sen University Wireless Communication Systems Network Radio
More informationRADIO LINK ASPECT OF GSM
RADIO LINK ASPECT OF GSM The GSM spectral allocation is 25 MHz for base transmission (935 960 MHz) and 25 MHz for mobile transmission With each 200 KHz bandwidth, total number of channel provided is 125
More informationChapter 2: Global System for Mobile Communication
Chapter 2: Global System for Mobile Communication (22 Marks) Introduction- GSM services and features, GSM architecture, GSM channel types, Example of GSM Call: GSM to PSTN call, PSTN to GSM call. GSM frame
More informationChapter 4. TETRA and GSM over satellite
Chapter 4. TETRA and GSM over satellite TETRA and GSM over satellite have been addressed a number of times in the first three chapters of the document. Their vital roles in the present project are well
More informationChapter 9 GSM. Distributed Computing Group. Mobile Computing Summer 2003
Chapter 9 GSM Distributed Computing Group Mobile Computing Summer 2003 Overview GSM Overview Services Architecture Cell management TDMA, FDMA Orientation Handover Authentications HSCSD, GPRS Distributed
More informationTELE4652 Mobile and Satellite Communications
Mobile and Satellite Communications Lecture 1 Introduction to Cellular Mobile Communications Public Switched Telephone Networks (PSTN) Public Land Mobile Networks (PLMN) evolved from the PSTN - Aimed to
More informationWelcome to SSY145 Wireless Networks Lecture 2
Welcome to SSY145 Wireless Networks Lecture 2 By Hani Mehrpouyan, Department of Signals and Systems, Chalmers University of Technology, hani.mehr@ieee.org Office #6317 1 Copy right 2011 Outline History
More informationCellular Wireless Networks. Chapter 10
Cellular Wireless Networks Chapter 10 Cellular Network Organization Use multiple low-power transmitters (100 W or less) Areas divided into cells Each cell is served by base station consisting of transmitter,
More informationPerformance Evaluation of 3G CDMA Networks with Antenna Arrays
Jul. 2003 1 Performance Evaluation of 3G CDMA Networks with Antenna Arrays IEEE 4th Workshop on Applications and Services in Wireless Networks Dr. D. J. Shyy The Corporation Jin Yu and Dr. Yu-Dong Yao
More informationCS 6956 Wireless & Mobile Networks April 1 st 2015
CS 6956 Wireless & Mobile Networks April 1 st 2015 The SIM Card Certain phones contain SIM lock and thus work only with the SIM card of a certain operator. However, this is not a GSM restriction introduced
More informationWireless systems. includes issues of
Wireless systems includes issues of hardware processors, storage, peripherals, networks,... representation of information, analog vs. digital, bits & bytes software applications, operating system organization
More informationCommunication Networks Chapter 9: UMTS
Communication Networks Chapter 9: UMTS o IMT-2000 o UMTS Architecture o UTRAN Architecture o UMTS Mobility Support o UMTS Development UMTS and IMT-2000 Proposals for IMT-2000 (International Mobile Telecommunications)
More informationAn overview of the GSM system
An overview of the GSM system by Javier Gozalvez Sempere An overview of the GSM system Javier Gozálvez Sempere PhD Student in Mobile Communications Communications Division Department of Electronic&Electrical
More informationECE 476/ECE 501C/CS Wireless Communication Systems Winter Lecture 2: Overview of Modern Wireless Communication Systems
ECE 476/ECE 501C/CS 513 - Wireless Communication Systems Winter 2004 Lecture 2: Overview of Modern Wireless Communication Systems Last lecture we looked at an introduction to the course. History FCC and
More informationWireless Communications. Introduction
Wireless Communications Introduction Primary Textbooks: Theodore S. Rappaport, Wireless Communications, Prentice Hall, 2nd Edition, 2002, Andrea Goldsmith, Wireless Communications, Cambridge University
More informationWeek 2. Topics in Wireless Systems EE584-F 03 9/9/2003. Copyright 2003 Stevens Institute of Technology - All rights reserved
Week Topics in Wireless Systems 43 0 th Generation Wireless Systems Mobile Telephone Service Few, high-power, long-range basestations -> No sharing of spectrum -> few users -> expensive 44 Cellular Systems
More informationECE 476/ECE 501C/CS Wireless Communication Systems Winter Lecture 9: Multiple Access, GSM, and IS-95
ECE 476/ECE 501C/CS 513 - Wireless Communication Systems Winter 2003 Lecture 9: Multiple Access, GSM, and IS-95 Outline: Two other important issues related to multiple access space division with smart
More informationWireless Communications
2. Physical Layer DIN/CTC/UEM 2018 Periodic Signal Periodic signal: repeats itself in time, that is g(t) = g(t + T ) in which T (given in seconds [s]) is the period of the signal g(t) The number of cycles
More information