ECE 595, Spring 2009
Special Topics in Wireless Communications
Professor Yasamin Mostofi
Lecture#1
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Special Topics in Wireless Communications: Lecture 1 - Spring 2009 by Yasamin Mostofi - Pr, Study notes of Electrical and Electronics Engineering
The outline of the first lecture for the special topics in wireless communications course offered by professor yasamin mostofi at the university of new mexico, spring 2009. The lecture covers the course syllabus, wireless vision, current and emerging wireless systems, and technical challenges. Students are introduced to various wireless communication concepts, including channel impairment modeling, digital modulation, and multiple access techniques.
Typology: Study notes
Pre 2010
1 / 43
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Special Topics in Wireless Communications: Lecture 1 - Spring 2009 by Yasamin Mostofi - Pr and more Study notes Electrical and Electronics Engineering in PDF only on Docsity!
ECE 595, Spring 2009
Special Topics in Wireless Communications
Professor Yasamin Mostofi
Lecture#
Outline
Course Information
Course Syllabus
The Wireless Vision
Current and Emerging WirelessSystems
Technical Challenges
Spectrum Regulation
Course Information (cont.)
There will be around 8 homework assignments
Grading:
Homework-20%, Midterm-30%
Final-
50% (project or exam)
HW grading loses 20% credit per day late
Textbook:
Wireless Communications by
Andrea Goldsmith available at Amazon
Course Information (cont.)
Supplementary Readings:
Microwave Mobile Communications, W. C. Jakes, Wiley, 1974 Wireless Communications - Principles and Practice by T. Rappaport,2nd Ed. Prentice Hall, 2001 Principles of Mobile Communications by G. L. Stuber, 2nd Ed, KluwerAcademic Publishers, 2001 Digital Communications, J.G. Proakis, 4th Ed., McGraw-Hill, 2001 Digital Communications over Fading Channels, A Unified Approach toPerformance Analysis M. K. Simon and M.-S, Alouini, Wiley, 2000
Course Syllabus (cont.)
Multiple access techniques
Capacity of wireless channels
Examples of wireless networks:
Cellular systems Wireless data networks Sensor networks and networked control systems
History of Wireless Comm. Wireless communication in old times: Smoke Signals Radio invented by Marconi in the 1880s From Isle of Wight to a tugboat 18 miles away Many radio systems were developed during WW Several existing examples today Cellular systems have enjoyed exponential growthsince 1988 around 2 billion users worldwide today
Current Wireless Systems^
Cellular Systems
Wireless LANs
Satellite Systems
Cordless Phones
Paging Systems
Short Range Data Systems: Bluetooth &ZigBee
First Mobile Radio Phone, 1924 Courtesy of www.bellsystemmemorial.com/oldphotos_1.html
Cellular Concept: Reuse Channels First proposed at Bell Labs by D. Ring, 1947 Geographic areas divided into cells Resources like frequencies, timeslots or codes are reused at spatially-separated locations Co-channel interference MTSOs handle handoff and control functions smaller cell size increases capacity
MTSO
Base Station
Cellular Phone Networks
BS MTSO PSTN MTSO BS Albuquerque New York Internet Drawing courtesy of Dr. Andrea Goldsmith, wireless communications downlink uplink
Multiple Access Techniques Courtesy of Petri Possi, UMTS World
Code Division Multiple Access
Originally developed for the military Resists jamming and interference All users share the same spectrum All accepted 3G radio standards arebased on CDMA
CDMA2000, W-CDMA and TD-SCDMA
The Wireless Evolution
Cellular: was fastest growing sector of communication industry exponential growth since 1982, with over 2 billion users worldwidetoday Three generations of cellular systems First Generation (1980s): Analog 30 KHz FM, voice only AMPS in USA, TACS in Europe Second Generation (1990s): Digital voice and low bit-rate data,portable units, 30-70 kbps Unified GSM in Europe, TDMA, slow frequency hopping, FSK In US:
-^ 900 MHz: IS-136 (TDMA), IS-95 (CDMA) -^ 1.9 GHz: IS-136, IS-95, GSM 2.5G increased data transmission capabilities Third Generation: Wideband CDMA, CDMA 2000, voice and highbit-rate data, portable units, data rate from 144 kbps to a few Mbps,development slow
CDMA GSM TDMA PHS(IP-Based) 64 Kbps GPRS 115 Kbps CDMA 1xRTT^ 144 Kbps EDGE 384 Kbps cdma2000^ 1X-EV-DV Over 2.4 Mbps W-CDMA(UMTS) Up to 2 Mbps 2G 2.5G 2.75G 3G 1992 - 2000+ 2001+ 2003+ 1G 2003 - 2004+ TACS NMT AMPS GSM/GPRS (Overlay)115 Kbps 9.6 Kbps 9.6 Kbps 14.4 Kbps/ 64 Kbps 9.6 Kbps PDC Analog Voice Digital Voice Packet Data IntermediateMultimedia Multimedia PHS TD-SCDMA 2 Mbps? 9.6 Kbps iDEN (Overlay) iDEN Source: U.S. Bancorp Piper Jaffray