ECE 459 - Fall 2014

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Announcements

Monday, Dec. 15, 2014
Review for final exam.

Based on the feedback I received, the review for the final exam will take place tomorrow, Tuesday, Dec. 16, 9-11am, in room 2015 ECEB.


Thursday, Dec. 11, 2014
Solutions to HW # 14, office hours until final, final exam.

Solutions to HW # 14 are posted online.

Di will have office hours tomorrow (Friday Dec. 12) but I won't. I will have office hours next on Monday, Tuesday and Wednesday 11am-12pm in room 2036.

The final exam 1 will take place next Thursday, Dec 18, 8-11am, ECEB 2015.
It will be closed book, closed notes, but you may bring ONE 8 1/2 ′′ by 11 ′′ sheet of notes.
The tables for Fourier transform properties and pairs will be provided.
Calculators, laptop computers, cell phones, tables of integrals, etc. are neither necessary nor permitted. Electronic devices of any sort such as calculators, laptops, PDAs, cellphones, pagers, iPods or other MP3 players etc. are not permitted.

The review for the final exam is currently planned for Tuesday, Dec. 16, 7-9pm, 2015 ECEB. However, there is a chance it might be moved earlier in the day, 9.30-10.50am. Please let me know if this would be inconvenient for you.


Saturday, Dec. 6, 2014
HW # 14 due date change.

HW # 14 is now due on Wednesday, Dec. 10 at 5pm (there is a mailbox in the 3rd floor near the northeast side of the building) because there are a lot of questions about it and things seem not clear. I will go through the the basics of it on Tuesday.


Tuesday, Dec. 2, 2014
HW # 14, solutions to HW # 13, office hours, last couple of lectures, participation points.

HW # 14 is posted online. It is due on Tuesday, Dec. 9 during lecture.

Solutions to HW # 13 are posted online.

My office hours are reinstated as before.

Let me know what you'd like me to review these last couple of lectures.

Everyone will get full participation points because I wasn't able to keep track of it because I wasn't lecturing.


Friday, Nov. 21, 2014
Typos in HW # 12 solutions.

There were some typos in the solutions to HW #12: bit rate in #2(a) and some signs in #3

The updated solutions are online.


Tuesday, Nov. 18, 2014
HW # 13, solutions to HW # 12 and exam 2.

HW # 13 is posted online. It is due on Tuesday, Dec. 2 during lecture.

Solutions to HW # 12 and exam 2 are posted online.

Exam regrades are on Tuesday, Dec. 2 during lecture. Read the exam section of the course website for the regrade procedure.


Tuesday, Nov. 11, 2014
HW # 12.

HW # 12 is posted online. It is due next Tuesday, Nov. 18 during lecture.


Tuesday, November 11, 2014
Exam 2.

Exam 2 will take place next Thursday, November 13 2, 9.30-10.50am, EVRT 269.

It will cover everything up noise in angle modulated systems, which is up to (and including) hw # 11.

It will be closed book, closed notes, but you may bring one 8 1/2 ′′ by 11 ′′ sheet of notes.
The tables for Fourier transform properties and pairs will be provided.
Calculators, laptop computers, cell phones, tables of integrals, etc. are neither necessary nor permitted. Electronic devices of any sort such as calculators, laptops, PDAs, cellphones, pagers, iPods or other MP3 players etc. are not permitted.


Monday, Nov. 10, 2014
Typo in solutions to HW # 11.

There were two typos in the solutions to hw # 11. Problem 4(c) had a typo in the lower limit of integration in the second integral, and 4(e) had a typo in the last sentence. The updated version is online.


Monday, Nov. 10, 2014
Solutions to HW # 11.

Solutions to HW # 11 are posted online so you can go through them and ask questions during tomorrow's review session during lecture. You still have to turn in the homework tomorrow.


Wednesday, Nov. 5, 2014
Exam 2 review session change.

The exam review session for next week will be moved to Tuesday during lecture.


Tuesday, Nov. 4, 2014
More course notes.

Prof. Basar's notes for upcoming lectures are available here and here (in case the first link does not work).


Tuesday, Nov. 4, 2014
HW # 11, solutions to HW # 10.

HW # 11 is posted online. It is due next Tuesday, Nov. 11 during lecture.

Solutions to HW # 10 are posted online.


Thursday, Oct. 30, 2014
No office hours tomorrow.

There will be no office hours tomorrow, Friday, October 31.


Tuesday, Oct. 28, 2014
HW # 10 and solutions to HW # 9 posted.

HW # 10 is posted online. It is due next Tuesday, Nov. 4 during lecture.

Solutions to HW # 9 are posted online.


Monday, Oct. 27, 2014
More course notes.

Prof. Basar's notes for upcoming lectures are available here and here (in case the first link does not work).


Tuesday, Oct. 21, 2014
HW # 9 and solutions to HW # 8 posted.

HW # 9 is posted online. It is due next Tuesday, Oct. 28 during lecture.

Solutions to HW # 8 are posted online.


Sunday, Oct. 19, 2014
Course notes download problem.

Some students have had trouble downloading the notes from the previous link. If you have trouble downloading them, they are also available here.


Thursday, Oct. 16, 2014
Course notes.

Prof. Basar's notes for recent and upcoming lectures are available here.


Tuesday, Oct. 14, 2014
HW # 8 and solutions to HW # 7 posted.

HW # 8 is posted online. It is due next Tuesday, Oct. 21 during lecture.

Solutions to HW # 7 are posted online.


Tuesday, Oct. 7, 2014
HW # 7 and solutions to HW # 6 posted. Exam regrades.

HW # 7 is posted online. It is due next Tuesday, Oct. 14 during lecture.

Solutions to HW # 6 are posted online.

Exam regrades are due next Tuesday, Oct. 14 during lecture. Read the exam section of the course website for the regrade procedure.


Sunday Oct. 6, 2014
Exam 1 solutions, substitute instructor starting Tuesday, changes in office hours.

Solutions to exam 1 are posted online.

Starting this Tuesday, Prof. Tangul Basar will substitute for me for a few lectures, while my speech recovers, so do not be surprised when she shows up.

Also, most likely, my office hours will be cancelled, or rescheduled, the next few weeks. Check the website again for more details, , but in the meantime assume they are cancelled.


Wednesday, Sept. 1, 2014
Typos in HW # 3 and HW # 4.

There is a typo in HW # 3, problem # 5. In the plot, the height of the small triangles on the sides of the baseband component should be W/2 instead of just 1/2.

There is a typo in HW # 4, problem # 1(a). The frequency of m_n should be 100, instead of 1000. It is correctly written in s(t), but then below it is incorrect twice.


Tuesday, Sept. 30, 2014
HW # 6 and solutions to HW # 5 posted. Extra office hours.

HW # 6 is posted online. It is due next Tuesday, Oct. 7 during lecture.

solutions to HW # 5 are posted online.

Extra office hours will be held tomorrow, Wednesday Oct. 1, 3-4pm in room 2013 ECEB.


Monday, Sept. 29, 2014
Clarification on problem # 6a in HW # 5.

On problem # 6a in HW # 5, the message is a cosine, instead of the sine we used in class, so the series coefficients are different.

However, the magnitude of the coefficients is the same for the sine and the cosine, and the problem asks only about the magnitude.

What's different is the phase. If you want to find the phase of the cosine, when you set up the integral for the coefficients, instead of going from -T/2 to T/2, go from -3T/4 to T/4 (it is fine as long as it's a full period), and then when the change of variables is made, instead of setting x=2pi ft like we did in class, you do x=2pi ft+pi/2.


Friday, Sept. 26, 2014
Exam 1, review and typo in HW # 5.

Exam 1 will take place next Thursday, Oct 2, 9.30-10.50am, EVRT 269.
It will be closed book, closed notes, but you may bring one 8 1/2 ′′ by 11 ′′ sheet of notes.
The tables for Fourier transform properties and pairs will be provided.
Calculators, laptop computers, cell phones, tables of integrals, etc. are neither necessary nor permitted. Electronic devices of any sort such as calculators, laptops, PDAs, cellphones, pagers, iPods or other MP3 players etc. are not permitted.

There will be a review for it on Tuesday, Sept. 30, 7-9pm, 2015 ECEB.

There is a typo in HW # 5, problem # 7. In parts (a) and (d), the notation for the bandwidth should be Bs, not Ps.


Tuesday, Sept. 23, 2014
HW # 5 and solutions to HW # 4 posted.

HW # 5 is posted online. It is due next Tuesday, Sept. 30 during lecture.

solutions to HW # 4 are posted online.


Saturday, Sept. 20, 2014
Comments on HW # 4.

Based on questions during office hours yesterday, this might be helpful.

In problem # 3, the mixing signals in the top branch are cosines, while the mixing signals in the lower branch are sines.

In problem # 4, the first operation is not a mixing, it is an addition.

In problem #5, the frequency of the carrier in part (a) should be f0, the same as the mixing cosine in the figure.


Tuesday, Sept. 16, 2014
Changes to HW # 4.

Some changes were made to HW # 4 to clarify things in problems 1,3 and 4, and a change in the figure of #5 . I suggest getting the new version.


Tuesday, Sept. 16, 2014
HW # 4 and solutions to HW # 3 posted.

HW # 4 is posted online. It is due next Tuesday, Sept. 23 during lecture.

solutions to HW # 3 are posted online.


Tuesday, Sept. 9, 2014
HW # 3 and solutions to HW # 2 posted.

HW # 3 is posted online. It is due next Tuesday, Sept. 16 during lecture.

solutions to HW # 2 are posted online.


Monday, Sept. 3, 2014
HW # 2 posted.

HW # 2 is posted online. It is due next Tuesday, Sept. 9 during lecture.


Friday August 29, 2014
Extra office hours, typo on Thursday's lecture, extra tables.

In order to make up for no office hours on Labor day, I will have extra office hours next Wednesday, Sept. 3, 9.30-10.30am in room 3034.

It seems like I had a typo on Thursday's lecture. The integral to obtain the Fourier series coefficients only goes from -T/2 to T/2, not from -infinity to +infinity.

Also, it seems like properties of the delta function are not well remembered, so I am adding a table on that, as well as on Fourier series here.


Thursday August 28, 2014
HW # 1 change.

HW # 1 is now due next Thursday, Sept. 4 during lecture.

A short handout on Parseval's relations, which will be useful in the hw, is available here.


Wednesday August 27, 2014
Useful tables.

A table with definitions of important signals is available here.

Tables with Fourier transform properties and pairs are available here.


Tuesday August 26, 2014
HW # 1 posted.

HW # 1 is posted online. It is due next Tuesday, Sept. 2 during lecture.

Remember to email me if you do not have an iClicker.


Monday August 18, 2014
Welcome ECE 459 students!

To get started with the course, you can start reading carefully this website. You can find information about lecture, office hours, homework, exams, grading, etc. Please check this section for further announcements regularly.

Please register your i>clicker in Compass.

Best wishes for the semester.


Course syllabus

Table of important signals
Tables of Fourier transform
Tables of Fourier series and delta function

Lectures: TR, 9.30am-10.50am, 4026 Electrical & Computer Eng Bldg.

Lecture Attendance Policy: We invite relevant questions and comments during lectures. Address your questions and comments to the entire class; avoid disruptive behavior such as talking to neighbors, unless the instructor invites you to form discussion groups. Kindly turn off cell phones, laptop computers, and other electronic devices during lectures, except for i>clickers. Texting or Web browsing is not allowed in class.

Textbook: Fundamentals of Communication Systems, Proakis and Salehi, Second Edition


Course Outline
  1. Representation of Signals and Systems
    • Introduction
    • Review of the Fourier Transform and linear systems
    • Hilbert Transform and bandpass systems
  2. Analog Modulation
    • Amplitude modulation: AM, DSB, SSB, VSB
    • Angle modulation
  3. Random Processes
      Introduction to random processes
    • Distribution and density functions of random processes
    • Mean, auto-correlation, and auto-covariance functions
    • Stationary random processes, wide sense stationary random processes
    • Linear filtering of random processes
    • Gaussian random processes through linear systems
    • Frequency domain analysis of random processes in linear systems, power spectral density
    • Noise, narrow band noise
  4. Noise in Analog Modulation
    • Signal-to-noise ratios in analog modulation systems
  5. Digital Communication
    • Sampling, quantization, quantization noise
    • Pulse code modulation, DPCM, delta modulation
    • Baseband pulse transmission, detection error probability
    • Digital passband transmission (PSK, QPSK)