Problems 6(b) and 7(b) can be done with the material we covered today but we didn't finish the example on that material. They will both count as extra credit.

I updated HW # 7 by removing a problem, as well as subparts of some problems, and adding some hints. This is to adjust for some of the material that was included before not being covered today. The updated pdf is online.

Pages 24-25 had two typos on the bandpass filter for SSB. The upper SSB filter h(t) needed a minus sign with the sine term, while the lower SSB filter h(t) needed a plus sign with the sine term. The pdf is now updated.

Problem 6 from HW # 2 had a typo in parts (d-e), the bandwidth part with W should have had W/2. The pdf is now updated.

Problems 6 and 7 from HW # 5 will be postponed to HW # 6 because we did not cover the material. The pdf is now updated.

Problem 4(b) in HW # 2 had a typo, it referred to the modulation index as a, instead of k_a. The pdf is now updated.

HW # 2 is posted and is due on Tuesday, September 19.

Solutions to HW # 1 are posted.

HW # 1 is posted and is due on Tuesday, September 12.

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.

Best wishes for the semester.

Review notes (last update: Friday, December 8, 2017)

Table of important signals
Tables of Fourier transform

Lectures: TR, 9.30am-10.50am, 3013 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 or mute cell phones, laptop computers, and other electronic devices during lectures.

Suggested (not required) textbook: Custom book for ECE459, ISBN: 978-1269807500 (available at IUB and TIS). It has only the chapters that we cover from the textbook: J. G. Proakis and M. Salehi, Fundamentals of Communication Systems, 2nd edition, Prentice-Hall, ISBN: 978-0133354850. You can use either one as a reference.
Others are at Grainger in reserve.

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)