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Leonard Dieguez (@LeonardDieguez)

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 Koliber Biosciences / Engineering, Space Micro Inc, Genral Atomics EMS, Kratos, L3 Harris, General Atomics ASI, and Xilinx. Leonard holds a BS in Electrical Engineering from University of South Florida. http://koliberbio.com/

Re: #OFDM point to point specification

Reply posted 11 months ago (05/21/2023)
OK did you receive an email from me? I sent it to the ej version of the email

Re: #OFDM point to point specification

Reply posted 11 months ago (05/17/2023)
did you get my email in the private msg?

Re: #OFDM point to point specification

Reply posted 11 months ago (05/10/2023)
Everyone, I have edited the original post to include the link is to the specification .

Re: #OFDM point to point specification

Reply posted 11 months ago (05/09/2023)
OK thanks. I'm trying to get in touch with Stephane to allow me to post it as a pdf here.

Re: #OFDM point to point specification

Reply posted 11 months ago (05/09/2023)
Ok thanks more eyes the better, Thank you.

Re: #OFDM point to point specification

Reply posted 11 months ago (05/09/2023)
Yes,  any help would be appreciated.

#OFDM point to point specification

New thread started 12 months ago
All,Specification location: FlexLinkPhy2023_v10.pdfOver the last several months I have gathered a few people and we have developed an OFDM specification for point...

Re: #OFDM material

Reply posted 2 years 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 years 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 years 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 years 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 years 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 years 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 years 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 years 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 years 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 2 years 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 3 years 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 3 years 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 3 years 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 3 years 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 3 years 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...

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