Leonard Dieguez Founder, CTO, Koliber Biosciences I specialize in software, hardware and machine learning applications for signal processing and digital communications. I have developed machine learning methods for improving peptide docking performance as well as classifying constellation symbols in quadrature amplitude modulated waveforms. I have over 30 years of experience leading commercial product development at companies including Kratos, L3 Harris, General Atomics, Altera (now Intel) and Xilinx. Leonard holds a BS in Electrical Engineering from University of South Florida. http://koliberbio.com/

Re: #OFDM material

Reply posted 2 months ago (07/25/2022)
OK looked at chapter 6 it looks like there is plenty to keep me busy for a bit. Thanks for the tip. It would be nice if the matlab scripts that are in the book were...

Re: #OFDM material

Reply posted 2 months ago (07/25/2022)
OK thanks Fred. I'll send you this thread link from my Koliber address, ( you have it already). Just sent the email to your ucsd emailLeonard.

Re: #OFDM material

Reply posted 2 months ago (07/25/2022)
wow, believe it or not, I have it. I must have gotten it a while back but never looked at it that closely. I probably got it on a impulse by when I was getting a...

Re: #OFDM material

Reply posted 2 months ago (07/25/2022)
yes there are a few books out there. without purchasing them it is hard to make a decision on them. Do you have any of them and any kind of guidelines or notes about...

Re: #OFDM material

Reply posted 2 months ago (07/25/2022)
I have not tried looking at the code on GNU radio. I'm not exactly a "C" person. Mostly workin matlab or python.

#OFDM material

New thread started 2 months ago
I'm trying to find material for design and implementation of ODFM waveform. I know the very basics. I'm not that familiar with, with the receive portion. Examples...

Re: #OFDM sample rate

Reply posted 2 months ago (07/18/2022)
That was my initial thoughts as well. I would ideally like to sample at 62.24 (4x the occupied bandwidth). When you say you have doubts about the figures, which...

Re: #OFDM sample rate

Reply posted 2 months ago (07/18/2022)
This is not an LTE application, but I'm also not sure if they are using an LTE chipset. Looks like the bins are 15KHz. I really don't know much other than what is...

#OFDM sample rate

New thread started 2 months ago
I'm trying to analyze a over the air RF capture. I have a RAW IQ data samples but the sample rate is 30.72Msps. The bandwidth occupied by the signal is about 10MHz...

Re: FFT question

Reply posted 3 months ago (06/24/2022)
Paul, sometimes a picture paints a 1000 words is it possible to post the image up here on what you are seeing? Leonard.

Re: Complex IF

Reply posted 1 year ago (09/19/2021)
After uninstalling spyder and re-installing it Spyder is working again. The file seems to be running fine on my setup. Not sure what is going on.

Re: Complex IF

Reply posted 1 year ago (09/19/2021)
I'm using pycharm. For some reason spyder will not run on my machine. Possibly check the version of numpy and update it. I have had issues with old versions of numpy. In...

Re: Complex IF

Reply posted 1 year ago (09/18/2021)
In Figure 6 it is a visualization of the real parts of each signal, the xmsg and the carrier multiplied together. On the positive side of the spectrum you have carrier...

Re: Complex IF

Reply posted 1 year ago (09/17/2021)
Please excuse the long msg but a picture paints a 1000 words (really 1024 to be exact!) I'm including code below not sure now to make it show up in a separate window....

Re: Complex IF

Reply posted 1 year ago (09/17/2021)
The real signal can be thought of as if there are 2 complex signals one with a constellation point rotating in a positive counter-clock wise rotation and one with...

Use this form to contact lifeatthesharpend

Before you can contact a member of the *Related Sites:

  • You must be logged in (register here)
  • You must confirm you email address