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.
Announcements
 Information regarding final exam
 Date: 15 May 2015
 TIME: 09:00  12:00
 ROOM BKD 3506, 3507
 Cover all the materials that we discussed in class and practice in the HWs & Quizzes.
 12 Pages: 1 cover page + 10 pages + 1 formula page
 These notes are provided for your studying pleasure....
 Notes for Chapter 3
 All Annotated Slides for Chapter 36
 All postmidterm HW solutions
 All postmidterm quiz solutions[Updated @ 10:30PM on May 13]
 Approximate Material Distribution (scorewise; rounded to nearest multiples of 5):
 Chapter 3 (Markov Chain, steadystate propabilities, call blocking probabilities in Erlang B and Engset models): 25%
 Chapter 4: 50%
 Chapter 5 (OFDM): 20%
 Chapter 6 (OVSF): 5%
 Date: 15 May 2015
 Midterm Results: Mean 67.5, Std 14
 Information regarding midterm exam
 Date: 6 Mar 2015
 TIME: 09:00  12:00
 ROOM: BKD 3207 and 3214
 Closed book. Closed notes. No cheat/study sheet.
 Basic calculator needed.
 A (small) ruler will be helpful.
 9 pages (including 1 cover page)
 14 questions (including 1 extracredit question)
 The last page contain the following formulas.
 Date: 6 Mar 2015
 Cover all the materials that we discussed in class and practice in the HWs.
 Approximate Material Distribution (scorewise; rounded to nearest multiples of 5):
 Chapter 1: 1.1 0%, 1.2 5%, 1.3 25%, 1.4 10%
 Chapter 2: 2.1 15%, 2.2 15%, 2.3 10%, 2.4 15%
 Chapter 3: 5%
 Sample Exam: This is an actial exam from an earlier year (with solution). (Skip parts (a) and (b) of Q6. We haven't covered these concepts in class.)
 All HWs and solutions (Note that only a part of one question is graded. So, check the solution even when you get a 5.)
 All quizes and solutions
 All slides (ch 1 and 2) combined in one pdf file
 Annotated notes for ch 3
 Approximate Material Distribution (scorewise; rounded to nearest multiples of 5):
 Welcome to ECS455! Feel free to look around this site.
 A basic RSS feed is created to track and inform updates
General Information
 Instructor: Asst. Prof. Dr.Prapun Suksompong (prapun@siit.tu.ac.th)
 Official Office Hours
 Tuesday 9:3010:30
Tuesday 13:3014:30
Thursday 13:3014:30  Please feel free to ask any question or express any concern after class.
 Course Syllabus
 Main Textbook: D. Tse and P. Viswanath, Fundamentals of Wireless Communication, Cambridge University Press, 2005.
 References
 A. Goldsmith, Wireless Communications, Cambridge 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: You may take a look at the slides from previous year for a sneak preview of the upcoming class material.
Problem Set
Due Date  Remarks/Solutions  
HW1  Jan 30, 10:30AM 
Solutions [Posted @ 9PM on Feb 23] 
HW2  Feb 6 13, 10:30AM 
Solutions [Posted @ 9:30PM on Feb 23] 
HW3  Feb 27, 10:30AM  Solutions [Posted @ 11:30AM on Feb 28] 
HW4  Not Due  Solutions [Posted @ 12:30AM on Mar 1] 
SelfEvaluation (1)  March 27, 5PM  
HW5  April 10, 10:30AM  Solution [Posted @ 3PM on April 19] 
HW6  May 8, 10:30AM  Solution [Posted @ 10PM on May 8] 
HW7  Free  Solution + mfile [Posted @ 9:30 on May 8] 
Formula sheet for final exam  May 11, 5PM  
SelfEvaluation (2)  May 15 
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. The whole textbook is 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
 P. Suksompong, Introduction to OFDM and its PAPR Drawback, 2009 (in Thai)
 Bahai, Evolution of OFDM, 2002
 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
 Article: Wired and Wireless Networks Compete—Cooperatively, Robert W. Lucky, ieee spectrum, 2012
 Spectrum Allocation
 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
 Remembering Hedy Lamarr, the Hollywood Star Who Helped Make WiFi
 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