ECE 333 Communication Systems, Fall 1996

9/3	Review of linearity, time invariance, and causality.  Graphical
	convolution.  Handed out review questions.

9/5	Fourier series and Fourier transforms.

9/10	Section 2.6 Bandpass Signals & the Hilbert Transform.
	Assigned HW 2.70 (Don't worry about x_i(t), just plot X_i(F)),
	2.71, 2.72, Show that \hat{\hat x} = -x.  DUE Thur. 9/19.

9/12	Bandwidth.  Chapter 5 AM, section 5.2.1 DSB-SC, section 5.2.2
	DSB-LC = conventional AM.  Assigned HW 5.1, 5.2, 5.5,
	5.6(Determine and plot the squares of the Fourier coefficients
	of the DSB signal), 5.7 DUE Thur. 9/19.

9/17	Finish section 5.2.2.  Example 5.2.2 carrier and sideband power in
	DSB-LC.  Demodulation of DSB-LC using an envelope detector.
	Section 5.3.3 Single Sideband AM (SSB AM).  Example 5.2.5.
	Started Section 5.2.4 Vestigial Sideband AM (VSB).
	Assigned HW 5.3, 5.13, 5.14, 5.16, 5.17 DUE Thur. 9/25.

9/19	Finished VSB.  Section 5.2.5  Power-law modulation, chopper modulator.
	Assigned HW 5.21, 5.22(Skip PM and FM) DUE Thur. 9/25.

9/24	Review of power signals.

9/26	Continue with modulators.
	Assigned HW 5.18(adder on right should be a multiplier),
	5.19 DUE Thur. 10/3.

10/1	Section 5.4.1 Superheterdyne AM Receivers.  Image frequency.  Started
	discussion of angle modulated.  Defined some important quantities such
	as phase, instantaneous frequency, phase and frequency deviations,
	maximum phase and frequency deviations.  Phase and frequency modulation
	indexes for sinusoidal modulating m(t).
	Assigned HW 5.44(don't need the fact that it's FM.  Proceed
	as in the AM case), Problem on blackboard DUE Thur. 10/10.

10/3	Demonstrated the infinite bandwidth of angle modulation for periodic
	modulating signals.  Defined upper/lower sidebands, power in transmitted
	waveform, power in upper/lower sidebands, effective bandwidth.

10/8	Assigned HW 5.24, 5.25, 5.26(1-3), 5.27(assume m(t) = cos(2 pi f_m t),
	give a numerical answer), 5.29, 5.28 DUE Thur. 10/17.

10/10	Finished Chapter 5.  Started introduction to probability.

10/15	More introductory probability.  Probability mass functions,
	probability densities.  Expectations.
	Scores for HWs 1, 2, and 3 need to be adjusted.  Please
	return those HWs on Oct. 24 (day of Exam 1).

10/17	Handed out review sheet for Exam 1.
	Defined variance.  Random processes, Section 3.2.2: mean function,
	autocorrelation.  Section 3.2.3: stationarity, wide-sense stationarity.

10/22	Went over review sheet for Exam 1.

10/24	Exam 1, in class.

10/29	Went over Exam 1.

10/31	Theorem 3.2.1, Defs. 3.2.11 3.2.12 on WSS and J-WSS.
	Section 3.2.4 Random processes and linear systems, Theorem 3.2.2.  
	Section 3.3.1 Power spectrum of a stochastic process.
	Theorem 3.3.1 (Wiener-Khinchin) and its applications.
	Assigned HW 3.38, 3.40(1)(2) DUE Thur. 11/7.

11/1	Friday: Last day to drop courses

11/5	Applications and derivation of the Wiener-Khinchin Theorem.
	Assigned HW 3.51, 3.53, 3.62 DUE Thur. 11/14.

11/7	Noise equivalent bandwidth, Section 3.6 Bandpass processes.
	Assigned HW 3.73(1)(2)(3) DUE Thur. 11/14.

11/12	Section 6.1: Effect of noise on DSB-SC, SSB-SC, DSB-LC.

11/14	Worked two examples, derived SNR for conventional AM.
	Assigned HW 6.1, 6.3, 6.5  DUE Thur. 11/21.

11/19	Worked Example 6.1.1 from the text.  Began Section 6.3 on the effect
	of noise in angle modulation systems.
	Assigned HW 6.4, 6.8(2)(3)(4)  DUE Thur. 12/5.

11/21	Went over detailed solution to problem 6.5 (answer in solution
	handed out is wrong!) Continue with Section 6.3.

11/26	Finished discussion of SNR for angle modulation.  Section 3.6.1:
	Threshold effect in angle modulation.  Section 6.3.2: Pre-emphasis
	de-emphasis in FM.
	Assigned HW 6.7, 6.10 DUE Thur. 12/5.

11/28	No class - Thanksgiving Recess

12/3	Pre-emphasis/de-emphasis in FM, Example 6.3.2.  Section 6.4: Comparison
	of analog modulation methods.  Section 6.5.2:  Noisy amplifiers, noise
	figure.

12/5	Cascades of noisy amplifiers.  Section 6.5.3: Transmission losses.
	Introduction to the sampling of waveforms.

12/10	Went over review sheet.  More on sampling.  Suggested problems
	2.61 and 2.63 on sampling.  Will leave handouts outside my office
	by Wed. afternoon containing solutions to review problems 3 and 4 and
	problem 6.11.

12/12	Exam 2, in class.

12/19	THURSDAY, 2:45 pm. Final Exam in 2540 EH