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 introduces selected topics in mobile communications to undergraduate students. Topics include wireless channel, principles of cellular communications, multiple access methods, digital mobile communication systems: TDMA, GSM, CDMA, WCDMA, multi-carrier and OFDM systems.
Announcements
- Information regarding the final exam [Posted @ 4:30PM on May 24; Last updated at 7PM on June 1]
- Check this course website regularly for breaking news about the final.
- Date: June 9, 2017
- TIME: 9:00-12:00
- ROOMs: BKD 3214 & 3207
- 10 pages: 1 cover page + 8 pages+ 1 formula page
- For the formula sheet,...
- Some boxes that are over the 40-symbol limit may have been modified.
- Since it is created by other students in the class, use at your own risk.
- To save time, read the cover page posted here before going into the exam room.
- 16 questions: 10+2+5+2+2+12+3+4+7+7+8+8+14+3+12+1
- Cover all the materials that we discussed in class and practice in the HWs.
- Material Distribution (score-wise): 5 (SEC4.1-4.3) + 30 (SEC4.4) + 11 (SEC4.5) + 34 (4.6-4.9) + 19 (CH5)
- For your studying pleasure....
- All post-midterm annotated slides combined in one pdf file.
- All post-midterm HWs and their solutions [Updated @ 7PM on June 1]
- Checked HWs can be picked up in front of the EC office on the 6th floor.
- All post-midterm exercises and their solutions [Updated @ 7PM on June 1]
- Graded exercises are posted on the SIIT Lecture Note System
- If you have valid reason for missing class on the day that we have exercise, please indicate the date, exercise number, and the reason in the second self-evaluation form. Make sure that you also submit/email supporting document/evidence to Dr.Prapun (if you haven't done so).
- Midterm results [Posted @ 9AM on Mar 30]
- Information regarding the midterm exam [Posted @ 10AM on Mar 13; Updated @ 8:30PM on Mar 19]
- Check this course website regularly for breaking news about the midterm.
- Date: March 23, 2017
- TIME: 9:00-11:00
- ROOMs: BKD 3214, 3507
- Information about the misterm exam:
- 7 pages (including the cover page)
- To save time, read the cover page posted here before going into the exam room.
- 14 questions. (5+1.5+1.5+6+8+4+10+3+7+6+3+2+6+4 = 67 pt)
- Cover all the materials that we discussed in class and practice in the HWs.
- Material Distribution (score-wise): 14 (CH1) + 32 (CH2) + 21 (CH3)
- Closed book. No formula sheet. Some formulas are provided. (See the cover page.)
- For your studying pleasure....
- All pre-midterm annotated notes combined in one pdf file.
- Correction: On page 145, when we try to find the expected value of the Bernoulli RV at the end of the page, the numbers 0 and 1 were mistakenly placed. The final result still holds though. The expected value of a Beroulli RV is simply its success probability p. [Credit: Sirimintra]
- All pre-midterm HWs and their solutions
- Checked HWs can be picked up in front of the EC office on the 6th floor.
- All pre-midterm exercises and their solutions
- Graded exercises are posted on the SIIT Lecture Note System
- If you have valid reason for missing class on the day that we have exercise, please indicate the date, exercise number, and the reason in the self evaluation form. Make sure that you also submit/email supporting document/evidence to me (if you haven't done so).
- This site can be accessed via ecs455.prapun.com
- Welcome to ECS455! Feel free to look around this site.
General Information
- Instructor: Asst. Prof. Dr.Prapun Suksompong (prapun@siit.tu.ac.th)
- Office: BKD, 6th floor of Sirindhralai building
- Office Hours: T 14:20-15:20, W 14:20-15:20, F 9:15-10:15
- Additinally, please feel free to ask any question or express any concern after class.
- Course Syllabus [Distributed in class on Jan 25]
- Main Textbook: D. Tse and P. Viswanath, Fundamentals of Wireless Communication, Cambridge University Press, 2005.
Handouts and Course Material
- Slides: Course Introduction
- Chapter 1
- Slides: 1.1 Introduction to wireless and mobile communications [Distributed in class on Jan 25; Updated @ 2PM on Jan 27]
- Slides: 1.2 Wireless Channel (Part 1) [Distributed in class on Jan 25 and on Jan 27]
- Annotated version [Posted @ 2:30PM on Jan 27; Updated @ 3PM on Feb 1]
- Exercise 1 Solution [Posted @ 3PM on Feb 1]
- Exercise 2 Solution [Posted @ 3PM on Feb 1]
- Slides: 1.3-1.5 Spectrum Allocation [Posted @ 8:30AM on Feb 1]Distributed in class on Feb 1]
- Chapter 2
- Slides: 2.1 Frequency Reuse [Posted @ 9PM on Feb 2] [Distributed in class on Feb 3]
- Exercise 3 Solution [Posted @ 3PM on Feb 8]
- Exercise 4 Solution [Posted @ 4:30PM on Feb 23]
- Annotated version [Posted @ 11:30PM on Feb 10]
- Slides: 2.2 Co-Channel Interference [Posted @ 10AM on Feb 8] [Distributed in class on Feb 10]
- Annotated version [Posted @ 11:30PM on Feb 10]
- Slides: 2.3 Sectoring [Posted @ 3PM on Feb 10]
[Distributed in class on Feb 10]
- Annotated version [Posted @ 11:30PM on Feb 10; Updated @ 4:30PM on Feb 15]
- Slides: 2.4 Erlang B Formula [Posted @ 11:30PM on Feb 10]
[Distributed in class on Feb 10]
- Annotated version [Posted @ 4:30PM on Feb 15]
- Exercise 5 Solution [Posted @ 4:30PM on Feb 23]
- Chapter 3
- Sections 3.1-3.2: Discrete-Time Approximation [Posted @ 9AM on Mar 1]
- Annotated version [Posted @ 10AM on Mar 3; Updated @ 8:30PM on Mar 19]
- Correction: On page 7, when we try to find the expected value of the Bernoulli RV at the end of the page, the numbers 0 and 1 were mistakenly placed. The final result still holds though. The expected value of a Beroulli RV is simply its success probability p. [Credit: Sirimintra]
- Exercise 6 Solution [Posted @ 11:30PM on Mar 10]
- Sections 3.3: Markov Chains and Their Long-Term Behavior [Posted @ 9AM on Mar 3]
- Annotated version [Posted @ 3PM on Mar 3; Updated @ 1:30PM on Mar 10]
- Exercise 7 Solution [Posted @ 11:30PM on Mar 10]
- Exercise 8 Solution [Posted @ 11:30PM on Mar 10]
- Section 3.4: Engset Model [Posted @ 10:30 on Mar 8]
- Annotated version [Posted @ 1:30PM on Mar 10]
- Exercise 9 Solution [Posted @ 10:30AM on Mar 16]
- Slides [Posted @ 8:30PM on Mar 11]
- Chapter 4
- Slides: 4.1 - 4.2 TDD vs. FDD; TDMA vs. FDMA [Posted @ 10AM on Mar 29]
- Annotated version [Posted @ 9AM on Mar 30]
- Slides: 4.3 DSSS [Posted @ 9AM on Mar 31]
- Annotated version [Posted @ 9:30AM on Apr 7]
- Slides: 4.4 m-sequence [Posted @ 9:30AM on Apr 7; Updated @ 10AM on Apr 21]
- Annotated version (part A) [Posted @ 9:30AM on Apr 7]
- Annotated version (part B) [Posted @ 3PM on Apr 7; Updated @ 10PM on Apr 19 and @ 10PM on Apr 27]
- Expanded version (part C) [Posted @ 10PM on Apr 27]
- Exercise 10 Solution [Posted @ 9:30AM on Apr 21]
- Exercise 11.1 Solution [Posted @ 10PM on Apr 19]
- Exercise 11.2 Solution [Posted @ 10PM on Apr 27]
- Slides: 4.5 Cyclic Codes [Posted @ 10AM on Apr 19]
- Annotated version [Posted @ 10PM on Apr 27]
- Exercise 12 Solution [Posted @ 10PM on Apr 27]
- Exercise 13 Solution [Posted @ 2PM on May 27]
- Slides: 4.6 CDMA [Posted @ 8:30PM on Apr 28]
- Annotated version [Posted @ 8:30PM on Apr 28; Updated @ 3PM on May 3 and @ 5PM on May 5]
- Exercise 14 Solution [Posted @ 2PM on May 27]
- Slides: 4.7 Sync. CDMA
[Posted @ 9AM on May 3]
- Annotated version [Posted @ 5PM on May 5]
- Exercise 15 Solution [Posted @ 2PM on May 27]
- Slides: 4.8 IS-95
[Posted @ 9AM on May 3]
- Annotated version [Posted @ 9:30AM on May 18]
- Slides: 4.9 3G and OVSF [Posted @8:30AM on May 17]
- Annotated version [Posted @ 9:30AM on May 18; Updated @ 12:30AM on May 21]
- Exercise 16 Solution [Posted @ 2PM on May 27]
- Chapter 5: OFDM
- Slides: 5.1-5.2 DFT, FFT, and Cyclic Prefix [Posted @8:30AM on May 17]
- Annotated version for Section 5.1 [Posted @ 12:30AM on May 21; Updated @ 4PM on May 24]
- Annotated version for Section 5.2 [Posted @ 4PM on May 24; Updated @ 4PM on May 26]
- Exercise 17 Solution [Posted @ 2PM on May 27]
- Exercise 18 Solution [Posted @ 2PM on May 27; Updated @ 7PM on June 1]
- Correction: The calculation for the last number in Q1 was wrong. The final answer was written correctly though. The solution has been updated.
- Slides: 5.3-5.4 Multicarrier Communication, LTE [Posted @ 10AM on May 24]
- 1x2 version for Section 5.3 [Posted @ 4PM on May 26]
- 1x2 version for Section 5.4 [Posted @ 4PM on May 26]
- Remark: You may take a look at the slides from previous year for a sneak preview of the up-coming class material.
Problem Set
D | Due Date | Remarks/Solutions |
HW1 | Feb 8 (Wed), 4:30PM |
|
HW2 | Mar 1 (Wed), 4:30PM |
|
HW3 | Mar 17 (Fri), 4:30PM |
|
HW4 | Not Due |
|
Eval 1 | Mar 23 (Thu) | |
HW5 | Apr 28 (Fri), 4:30PM |
|
HW6 | May 17 (Wed), 4:30PM |
|
HW7 | Not Due |
|
E2Forml | May 30, 4:30PM |
|
Eval 2 | June 9 |
|
Calendar
Reading Assignment
Additional References
- A. Goldsmith, Wireless Communications, Cambridge Press, 2005.
- Theodore S. Rappaport, Wireless Communications: Principles and Practice, 2nd Edition, Prentice Hall PTR, 2002. ISBN-13: 978-0130422323. 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, W-CDMA and cdma2000 for 3G Mobile Networks, McGraw-Hill 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, Multi-Carrier 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.
- MATLAB Primer, 8th edition T. A. Davis. CRC Press, 2010.
- MIT RES.6.007 Signals and Systems (1987) on Youtube
Supplementary References
- Wireless Channel
- Ray tracing
- J. W. McKown and R. L. Hamilton, "Ray tracing as a design tool for radio networks," in IEEE Network, vol. 5, no. 6, pp. 27-30, Nov. 1991.
- See FIg 1 and the "Efficient Algorithms" section.
- Cellular communications, Principles of cellular radio
- 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.
- Markov Chain
- Multiple access schemes
- CDMA (Part 1)
- Spread Spectrum Communications
- DSSS and m-sequences
- 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 graduate-level and hence not required for our class.
- This web site can help you find many primitive polynomials.
- For deeper understanding of DSSS and CDMA, here are some references:
- Page 84-90 of [Karim and Sarraf, W-CDMA 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].
- DSSS and m-sequences
- Multi-carrier and OFDM systems
- 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.5-14, May 1990.
- For deeper understanding of OFDM, please read
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 Software-Defined 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 spread-spectrum patent
- Remembering Hedy Lamarr, the Hollywood Star Who Helped Make Wi-Fi
- 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 Asia-Pacific Coverage
- Besser Associates, BesserNet.com (many RF interactive design programs/tutorials)
- Prapun's Notes on Communication Theory
- Prapun's Notes on Probability Theory