Links
Very Excellent sources of knowledge for students of Digital Communications
Know of good sites, please post info on bottom of this page!
General topic and forums sites where you can ask questions and get help on topics of digital communications
- EEWeb Electronics Forum
- http://www.dsprelated.com – Try this wonderful site by Stephane Boucher for all your DSP questions.
All about Fourier analysis
- Wonderful exploration in harmonics and FFT
- http://www.cmlab.csie.ntu.edu.tw/DSPCourse/slide/Lecture3.pdf
- https://engineering.purdue.edu/~bouman/ece438/lecture/module_1/1.3_fourier_analysis/1.3.3_dtft.pdf
- http://web.eecs.umich.edu/~aey/eecs206/lectures/fourier2.pdf
- http://web.eecs.umich.edu/~aey/eecs206/lectures/dft2.pdf
- http://web.eecs.umich.edu/~aey/eecs206/lectures/dft1.pdf
- PP charts by Maxim Raginsky on DTFT
- Article on “FFT convolution and the overlap-add method” from DSP DesignLine, By Steven W. Smith, Ph.D.
- http://www.ligo.caltech.edu/~ethrane/Resources/signals/shivaraj_DFT.pdf
- http://www.cmpe.boun.edu.tr/~gurgen/cmpe530/pdft.htm By Dr. Fikret S. Gurgen
- Very good summary of Random Signal properties and Probability Thoery
Spectral Estimation
- Spectral Estimation Techniques with emphasis on short data records –A Primer by Manfred K. Pruessner
- Very good quantitative description of spectral windows
DSP – general
- http://ccrma.stanford.edu/~jos/pubs.html
- Class notes from MGill University, By Peter Kabal, nearly a whole book
- http://www.ee.nmt.edu/~elosery/lectures/Quadrature_signals.pdf
- http://eeweb.poly.edu/iselesni/EL713/zoom/dftprop.pdf
Sampling, aliasing and windows
Filters
- Digital Filter Design Applets plus DSP Tutorials By Jeffrey D. Taft, PhD
- A filter primer by Maxim Inc.
Tools, Software
- Tutorial on Matlab – From University of New Hampshire
Coding
- Many Turbo code sites – A site referring to other Turbo code sites.
Modulation
- Modulation: Java animated applets shows creation of QPSK, QAM
- QPSK Modulation Demystified – A pretty good tutorial on PSK modulation by Maxim Inc.
- FM Demo : Not particularly instructive but a fun java applet showing a sinusoidal FM modulation
- Article on GMSK modulation
Phase Lock Loops
- Viewgraphs format presentation on PLL by Chee Piew Yoong
- Circuit Sage take you to numerous other links
- PLL tutorial – digital
Antenna/Microwave
Spectrum measurements
Spread Spectrum
Articles on spread spectrum and CDMA
Trellis Coded Modulation
- http://www.columbia.edu/~rdg74/ee6713/Trellis_Coded_Modulation.PDF
- http://www.google.com/search?sourceid=navclient&ie=UTF-8&oe=UTF-8&q=tcm+trellis+coded+modulation
- http://www.comlab.hut.fi/opetus/311/tcm_1.pdf
- Lattice packing
- http://www.sce.carleton.ca/courses/sysc-5504/notes/pdf/tcm.pdf
- http://ece-classweb.ucsd.edu/archive/summer02/ece259cn/Main/TCM.pdf
- http://www.signal.uu.se/Courses/CourseDirs/ModDemKod/2004/LectureSlides/lecture12.pdf
Satellites
- Satellite Communications Tutorial by J P Silver
- Satellite link budget comparison for various multiple access (TDMA, CDMA,FDMA)
- Excellent article about Link Budgets by Carlos Jorge Rodrigues Capela
OFDM Tutorials
- http://www.ece.ualberta.ca/~taocui/page/tutorial/OFDM_analy.pdf
- http://www.ece.ualberta.ca/~taocui/page/tutorial/ofdm_tutorial.pdf
- http://www.ece.ualberta.ca/~taocui/page/tutorial/COFDM.pdf
Spread Spectrum Tutorials
Image Processing
Useful industry sites
Can you please add a link to my website to https://complextoreal.com/links/
I run a website for the RF & Microwave Industry called everything RF – http://www.everythingRF.com
We provide a tool which enables engineers to find products and companies based on their requirement. We also provide a useful White Paper Library.
Thanks,
Raghav
Hello. The link to the discussion on harmonics under the FFT section is dead. Thankfully the wayback machine has a copy including the wav files.
http://web.archive.org/web/20081206124648/http://www.jhu.edu/~signals/listen/music1.html
Your tutorials are excellent, thank you for taking so much time to write them. It’s unfortunately rare to find someone who has a deep understanding of the material, can communicate clearly and efficiently, and covers such a breadth. Thank you.
Madam,
i am very much impressed with your writing style, and also the content.
A small request is to verify the URL links given above, as few of them are dead.
regards
Dear Ms. Langton,
Thank you for writing your tutorials. I have taken a lot of advanced EE classes years ago but sometimes had nagging questions about basic things and they were usually covered in a very clear way in your tutorials – which I discovered later. You address complex (obvious pun) concepts in a very approachable way that is similar to how I try to understand new concepts at first. Your tutorials have helped me immensely.
George
Dear George,
Thank you very much for your nice comments.
I am so glad you liked the name of the site.
It is cute.
I am working on a book right now, which is why I have not posted for a while.
Thanks again for your comments,
Charan Langton
Hi, Charan.
Nice website! I came across it when looking for resources relevant to the Discrete Fourier Transform (DFT). I often look around to see what information is available; it helps with my own work. Reading material from a wide range of perspectives usually helps me understand concept better.
I’d also like to share some of my work that may be relevant to your website: last year (2015), I posted a JavaScript translation of a DFT from the FFTPACK library:
Discrete Fourier Transform: http://www.akiti.ca/FourierTransform.html
It is simple to use and I hope you find it useful.
I recently posted n update to the DFT tutorial. Be sure to look at it. – Charan Langton
I have this question
Theoretically, could the bandwith for WCDMA be lower than 3.8Mhz, say 1.9 for instance?
In Lte the minimum I have seen is 1.4
Thank you,
The bandwidth allocated and bandwidth possible can be two different things. The bandwidth (baseband) required is only a function of the the modulation order and symbol rate.
One always starts with the data rate required. Lets says that the minimum date rate needed for voice is 9.6 Kbps (for a give BER). Assume modulation is QPSK (as in CDMA), then bandwidth is equal to 2 times the symbol rate. Actually the bit rate for voice cna be as alo as 1.024 Kbs, in which case, the badwidth required would be only two times that.
Not sure if this was your question. In LTE the channels can provide compressed video as well. So it all depends on the service parameters.
Charan
Hi Charan
I am looking for a Simulink model for wireless receiver for education purpose. Bumped into this one, http://www.valpont.com/a-simple-wireless-receiver/pst/, at valpont.com but it doesn’t work. Do you have one handy?
Also I think valpont.com is a good site for ECE research and design. It is new but I like its idea to encourage engineers to share knowledge. I guess you can add it to your list so others can also benefit.
Thanks
Tong
HI, some links don’t work anymore. Actually most of them. Anyway your tutorials are great.
Thanks.
Regards.
Excited and respectful and respectful
I am a graduate student in computer network engineering and study in Iran
And I’m investigating cryptography and decryption with the convolution of the code
I need an algorithm to capture and hide the data and submit an image file, and eventually send the data hidden behind the photo to be detected in the receiver.
please guide me
Hi,
I was wondering what your thoughts were on “All About Circuits”, would you consider adding them to the “Links” page? Here is the URL for their website if you would like to have a look:
https://www.allaboutcircuits.com/
I am looking forward to hear from you the soonest.
Best,
Marge