Bulletin Board for TSDT14 Signal Theory
Information is added here during the course.
No notes are removed during the course.
Please, make it a habit to take a look at this page once a week.
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2009 08 26
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Welcome to this course. The course information and some other
information is now available from the
course web.
All information about the course is there. Any additional information
will be posted on the bulletin board that you can find there. The
course web pages and the course mailing list are the means that I
intend to use to communicate information to the students. However, my
intention is to keep the traffic intensity on the mailing list low.
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Mikael Olofsson
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2009 09 02
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As we observed at the first lecture, there are too many of us to fit into T2.
There are two more occations where we are scheduled in T2.
I have now been able to fix that,
which in one case means that we move one lecture and one problem class within the correct schedule block.
We will therefore make the following changes to the schedule:
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The lecture on Monday Sept 7 between 13-15 is moved to
Tuesday Sept 8 between 8-10. It will be held in Visionen.
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The problem classes on Tuesday Sept 8 between 8-10 are moved to
Wednesday Sept 9 between 10-12.
GRA in G33 (Swedish). GRB in I206. GRC in U6.
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The lecture Monday Sept 21 between 13-15 will be held in Visionen.
At the moment,
only the moved problem classes are reflected in the schedule.
I hope the changes of the two lectures will be included in the schedule soon.
To find your way to those places:
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Mikael Olofsson
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2009 09 07
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We are using the first edition of the course book, and there are a number of misprints in it.
After having read through the first five chapters, I have compiled a first version of an errata.
It is available through the course web. More precisely, it can be found at
I will continue to hunt down misprints in the rest of the chapters and update that errata if needed.
If you find something in the course book that you think is a misprint,
please let me know so that I keep the errata as correct as possible.
This will help make the next edition better.
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Mikael Olofsson
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2009 09 07
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The laborations are supposed to be done in groups of two students. They consist of three studies, and all three studies are expected to be done by the same groups. After having done all studies, each group writes one report covering all three studies.
The lab sign-up system that you can reach through the course web is not aware of those details. Therefore, the sign-up system accepts different constellations for different studies. It is therefore important that you first try to find someone that you want to do the laborations with and then sign up for the three studies together.
If you cannot find someone to do the labs with, I suggest the following procedure:
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Search the lab sign-up system for someone that has signed up alone.
Contact that person and ask if it is OK that you do the labs together.
If so, sign up with that person for all three studies.
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Sign up alone and hope that someone else does 1 and finds you.
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It is perfectly OK to do the labs alone if that is what you want.
In that case, contact me and I will plug the seat next to you.
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I would like to avoid groups of three students as far as possible,
but I can accept that as a last resort if 1, 2 and 3 proves to be impossible.
In that case, find a group of two students that want to do the labs with you and contact me.
If more than one student asks me about that, I must conclude that they have not done 1 and 2.
In that case, I can decide to form groups of two students from those individuals.
Note 1:
If you know that you are signed up with different people for different studies, please fix that. Sign off where needed and sign up again in suitable pairs. There is a link for signing off in the confirmation email that you got when you signed up.
Note 2:
As I've said, it is perfectly OK to do the labs on your own, not attending the scheduled lab sessions. In that case you should not sign up for the labs. The signing up is only about reserving seats and computers at the lab sessions.
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Mikael Olofsson
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2009 09 15
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My hunt for misprints has reached a milestone.
I have read through the complete book looking for misprints.
There is now a second version of the errata available at the course web.
More precisely, it can still be found at
Special thanks go to students and colleagues who have identified a number of those misprints.
If your favourite misprint is not included in the errata, please let me know.
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Mikael Olofsson
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2009 09 17
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The laborations are coming up soon. The first occation is on Wednesday Sept 23. I would like to take the opportunity to mention a few things regarding those labs:
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The lecture on Monday Sept 21 is directly aimed at the laborations. There we will consider estimation of ACFs and PSDs, which is exactly what you will do over and over again in the laborations. It is definitely a good idea to attend that lecture. The corresponding part of the course book is Chapter 10, Spectral Estimation.
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If you have not yet signed up for the laborations or not yet found a lab partner, make sure you do so soon. See Information Letter 4. If you do not have that at hand, you find it on the Bulletin Board at the course web.
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Most likely, you will need more than two hours for each of the three studies. To get the most out of the scheduled time in the computer lab you should prepare your laborations in advance, as usual. Read the lab memo and plan your work. Perhaps even start writing some Matlab code. Part of Study 1 is to write tools that you will use in all three studies.
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For each study, I expect your report to contain a theoretical analysis of the situation as comparison to your estimations. Your preparation before each study might very well consist of doing that analysis. In that way, you know in advance what you could expect from your estimations.
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What you do not find the time to do during the scheduled occations in the lab, you simply have to do on your own. When the computer labs are not used for teaching, you can use any free computer. If a computer lab is used for teaching, and there still are free computers, you should first ask the teacher if it is OK to use them.
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I've said this before: You may very well do the laborations, or parts of them, on your own, since the examination of the labs is based on your report. If you choose to do so, you need Matlab with Signal Processing Toolbox. The student version of Matlab contains that, as far as I know.
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Mikael Olofsson
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2009 10 01
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Starting this week,
my visiting hours for students will be Tuesdays 13-14 (as before) and Fridays 9-10 (changed).
During those hours you can show up without prior notice.
If you want to see me at some other time,
you should make an appointment in advance.
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Mikael Olofsson
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2009 10 06
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I now start to get lab reports from you.
I would like to make one thing clear:
I am not interested in getting separate lab reports for the tree studies.
I do not even read those.
I expect to get one report from each lab group covering all three studies.
The following can be found in the lab memo:
For approval, your report has to be handed in no later than
the last day of the study period HT1. Any additional details
can be provided during HT2.
The course info on the web is more generous:
The lab report should be handed in no later than the last
day in the exam period in October.
That can seem contradictory, or at least confusing.
To make this clear:
You hand in your report to me no later than Tuesday October 27
(last day in the exam period),
either by email or in person.
If this report does not pass,
then you have all of HT2 to correct whatever needs to be corrected.
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Mikael Olofsson
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2009 10 12
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The exam is coming up soon,
more precisely 2009-10-23 between 14:00 and 18:00.
The deadline for signing up for that exam is tomorrow 2009-10-13.
If you have not signed up yet,
do so immediately,
otherwise you are not guaranteed a seat at the exam.
Signing up is as far as I know done through the student portal.
If you do not know how to do that,
ask a fellow student who seems to know more.
The last three exams were available in both English and Swedish,
and solutions could be given in any of those two languages.
That will not be the case this year.
Instead there will only be an English version of the exam.
Moreover,
I want all answers and solutions to be given in English.
That has to do with the linguistic skills of those involved in grading the exam.
Not all of us know Swedish well enough for that.
Finally,
the next week (Oct. 19-23) I will be available for questions most of the time.
I.e., there are no separate visiting hours that week.
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Mikael Olofsson
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