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 3-6
- All post-midterm HW solutions
- All post-midterm quiz solutions[Updated @ 10:30PM on May 13]
- Approximate Material Distribution (score-wise; rounded to nearest multiples of 5):
- Chapter 3 (Markov Chain, steady-state 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 extra-credit 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 (score-wise; 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 (score-wise; 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 9:30-10:30
Tuesday 13:30-14:30
Thursday 13:30-14:30 - 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. 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.
Handouts and Course Material
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- Remark: You may take a look at the slides from previous year for a sneak preview of the up-coming 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] |
| Self-Evaluation (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 + m-file [Posted @ 9:30 on May 8] |
| Formula sheet for final exam | May 11, 5PM | |
| Self-Evaluation (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 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.
- CDMA (Part 2) and orthogonality, Walsh sequences and Hadamard Matrix
- 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].
- IS-95
- FHSS
- GPS and Gold codes
- DSSS and m-sequences
- Multi-carrier and OFDM systems
- Wireless Channel (Part 2), multipath propagation and Equalization
- Multi-carrier 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.5-14, May 1990.
- OFDMA
- GSM, GPRS, EDGE, UMTS (W-CDMA) and OVSF code
- WiMAX and OFDMA
- LTE and SC-FDMA
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
