In less than three decades, the status of cellular telephones has moved from laboratory breadboard via curious luxury item to the world's most pervasive consumer electronics product. Even though wired telephony is 100 years older and the beneficiary of "universal service" policies in developed countries, the number of cellular phones has exceeded wired phones for a few years and the difference keeps growing. For hundreds of millions of people in developing countries, cellular communications is the only form of telephony they have experienced.
Synopsis
This course provides an introduction to mobile communications system principles, design and technology. It also covers stateoftheart topics such as LTE (SCFDMA).
Announcements
 Welcome to ECS455! Feel free to look around this site.
 Information regarding final exam
 Date: 3 Apr 2012
 TIME: 09:00  12:00
 ROOM: BKD 2601
 Closed book. Closed notes. No cheat/study sheet.
 Basic calculator allowed
 Provided formulas and formula sheet
 Cover Page
 11 Pages, 13 Problems
 Rough Distribution of Material: Ch4 (55%), Ch5 (35%), Ch6 (10%)
 Date: 3 Apr 2012
 Information regarding midterm exam
 Date: 21 Feb 2012
 TIME: 09:00  12:00
 ROOM: BKD 2401
 Closed book. Closed notes. No cheat/study sheet.
 Basic calculator allowed
 Provided formulas
 Cover page
 Material: Ch1 15%, Ch2 50%, Ch3 25% Ch4 10%.
 Combined Lecture Materials
 Exam from an earlier year.
 Date: 21 Feb 2012
General Information
 Instructor: Dr. Prapun Suksompong (prapun@siit.tu.ac.th)
 Office Hours
 Room: BKD36017
 Time:
 Wednesday: 15:3016:30
 Friday: 9:3010:30
 Please feel free to ask any question or express any concern after class.
 Course Syllabus
 Class
information
 Main Textbook: A. Goldsmith, Wireless Communications, Cambridge Press, 2005.
 References
 Free Textbook: D. Tse and P. Viswanath, Fundamentals of Wireless Communication, Cambridge University Press, 2005.
 Theodore S. Rappaport, Wireless Communications: Principles and Practice, 2nd Edition, Prentice Hall PTR, 2002. ISBN13: 9780130422323. Call No. TK5103.2 R37 2002
 There are quite a number of typos in this book. Please go to the update page to download the pdf file of the pages that have been fixed.
 M. R. Karim and Mohsen Sarraf, WCDMA and cdma2000 for 3G Mobile Networks, McGrawHill Professional, 2002.
 J. S. Lee and L. E. Miller, CDMA Systems Engineering Handbook, Boston, MA: Artech House, Oct. 1998.
 R.E. Ziemer, Fundamentals of Spread Spectrum Modulation, Colorado Springs: Morgan & Claypool Publishers, 2007
 A. Bahai, B. R. Saltzberg, and M. Ergen, MultiCarrier Digital Communications: Theory and Applications of OFDM, 2nd ed., New York: Springer Verlag, 2004.
 H.G. Myung and D.J. Goodman, Single Carrier FDMA: A New Air Interface for Long Term Evolution, Wiley, 2008.
Handouts and Course Material
Ch  Handouts & Slides 
0 

1 

2 

3 

4 

5 

6 

 Remark: Take a look at the slides from previous year for a sneak preview of the upcoming class meterial
Problem Set
Due Date  Remarks/Solutions  
HW1  Jan 31  
HW2  Feb 14  Solution For problem 2b, a minus sign is missing in my answer. This has been fixed. Some explanation regarding dB and dBm is also added at the end of the solution for problem 2. 
HW3  Not Due  Solution 
SelfEvaluation form (1)  Feb 2  
HW4  Mar 29  Solution 
HW5  Not Due  Solution MATLAB files for Q1, Q2, Q34 
SelfEvaluation form (2)  Apr 3 
Calendar
Reading Assignment
Course Outline
 Review: Fourier transform and basic communication systems
 Cellular communications, Principles of cellular radio
 Wireless Channel (Part 1)
 Spectrum Allocation
 Frequency Reuse and Sectoring
 Trunking Theory and Erlang B formula
 Poisson Process with review of basic probability theory
 Markov Chain
 The "best" introductory textbook on Markov chain is probably the one written by Norris. This again will be an overkill for this class but it serves as a good reference if you want to dig into this topic further. There are some sample chapters available on the web as well.
 Whitt wrote an article that provide several remarks on Erlang B formula via a number of HW exercises. Those who want to read more about Erlang B study may find it interesting.
 Duplexing: TDD vs FDD
 Multiple access schemes
 FDMA
 TDMA
 CDMA (Part 1)
 SDMA
 Spread Spectrum Communications
 DSSS and msequences
 For those who want to know more about Galois Field and its application, one of the best book in the market is written by Stephen B. Wicker.
 I also have my own notes on this topic beased on the textbook above. These notes are graduatelevel and hence not required for our class.
 This web site can help you find many primitive polynomials.
 CDMA (Part 2) and orthogonality, Walsh sequences and Hadamard Matrix
 For deeper understanding of DSSS and CDMA, here are some references:
 Page 8490 of [Karim and Sarraf, WCDMA and cdma2000 for 3G Mobile Networks, 2002].
 Chapter 1 and 2 of [Viterbi, CDMA: Principles of Spread Spectrum Communication, 1995]
 Chapter 13 of [Goldsmith, Wireless Communications, 2005]
 Section 3.4.3 of [Tse and Viswanath, Fundamentals of Wireless Communication, 2005]
 Chapter 4 and 5 of [J. S. Lee and L. E. Miller, CDMA Systems Engineering Handbook. Boston, MA: Artech House, Oct. 1998].
 Chapter 4 of [R.E. Ziemer, Fundamentals of Spread Spectrum Modulation. Colorado Springs: Morgan & Claypool Publishers, 2007].
 IS95
 FHSS
 GPS and Gold codes
 DSSS and msequences
 Multicarrier and OFDM systems
 Wireless Channel (Part 2), multipath propagation and Equalization
 Multicarrier transmission and frequency division multiplexing
 Orthogonality (revisited)
 DFT and FFT
 Oversampling
 Cyclic Prefix and circular convolution
 For deeper understanding of OFDM, please read
 Bahai, 2002, Evolution of OFDM (posted on the SIIT online lecture note system)
 J.A.C.Bingham : "Multicarrier Modulation for Data Transmission : An Idea Whose Time Has Come,"' IEEE Commun. Mag., Vol. 28, No. 5, pp.514, May 1990.
 OFDMA
 GSM, GPRS, EDGE, UMTS (WCDMA) and OVSF code
 WiMAX and OFDMA
 LTE and SCFDMA
Misc. Links
 Spectrum Frequency Chart
 EM Waves and Their Propagation
 Video: CU physicist Bob Richardson lectures on the propagation of electromagnetic radiation (1981)
 Video: Science@NASA  EMS Electromagnetic Spectrum (Episode 2)  Radio
 Video: EM wave animation (linear polarization)  1, 2, 3
 Video: Linear, Circular and Elliptical Polarization Animation
 Video: Dipole Antenna Radiation  1, 2
 Video: Mobile Phone Radiation: 1, 2
 Infographic from Cellphones.org
 Comparison of wireless data standards
 The Evolution of Cell Phone
 Article: Jim Giles, Traffic jam: the coming cellphone crunch, New Scientist, November, 2010
 Textbook: C.R. Johnson and W.A. Sethares, Telecommunications Breakdown: Concepts of Communication Transmitted via SoftwareDefined Radio, Prentice Hall, 2003.
 History of Cell Phones
 Marty Cooper, Inventor of the Cell Phone, Recreated the First Cell Phone Call for 60 Minutes on CBS
 Video: The Communicators: Martin Cooper (featured in a "60 Minutes" profile on May 23, 2010)
 Are Mobile Devices Destroying Your Body
 Secret communications system: the fascinating story of the lamarr/antheil spreadspectrum patent
 Andrew Viterbi's Fabulous Formula
 Download IEEE 802 Standards
 The History of the Internet in a Nutshell
 iPhone 3GS Disassembly
 Power Control in OFDMA Wireless Networks
 Video: OFDMA (Rohde and Schwarz)
 Video: The Latest In WiMAX In Depth (from ROCKETBOOM)
 Video: What is WiMAX? (from ROCKETBOOM)
 The IEEE 802.11 Universe
 Social topics
 Learn the Greek Alphabet in less than 10 minutes
 The Greek Alphabet Song
 Whitt, The Erlang B and C Formulas: Problems and Solutions, class notes, 2002
 Textbook: James R. Norris. Markov Chains. Cambridge University Press, 1997.
 GSM World Coverage map
 GSM AsiaPacific Coverage
 Besser Associates, BesserNet.com (many RF interactive design programs/tutorials)
 Prapun's Notes on Communication Theory
 Prapun's Notes on Probability Theory