The Exemplar of Open Research and Development
Thank you to ARRL for the support of open source digital radio work. Our article about Space Frequency Block Coding, a powerful and modern digital signal processing technique, will be in the January/February 2025 issue of QEX magazine.
Find out more about QEX at https://www.arrl.org/qex
Review a draft of the work in our Documents repository on GitHub.
Neptune Project’s Space Frequency Block Coding article will appear in the next issue of QEX Magazine, from ARRL. Learn all about this modern digital signal processing technique in a friendly and accessible way.
See https://www.arrl.org/qex for more information about this magazine for amateur radio experimenters.
Today’s #neptune meetup video recording is here:
We discussed techniques to lower #OFDM latency, including cyclic suffix instead of cyclic prefix. We updated the progress on space frequency block coding integration and documentation. We talked about the #DEFCON demonstration changes after the venue change for August 2024. Finally, we talked about the Zadoff-Chu AGC Burst insertion challenges in #Simulink.
Greetings all!
What do you need help with this week?
Here’s some opportunities at ORI.
1) Pierre and Ahmet are looking for people to help with mobile app design on Ribbit.
The Ribbit Radio app is in both Android and Apple testing. The updates to Rattlegram are incorporated and the app is functional on both platforms. We have had excellent response for test teams and things are moving forward.
To make the app as great as it can be, we could use some additional human resources for UX/UI/code development. If this sounds like something you are interested in, please join #ribbit on our Slack or write to me directly and I’ll get you in touch with the team leads.
2) DEFCON volunteers for the booth/exhibit. We’ve got just enough people to cover it. It’s a great event. We have solid support from RF Village and we advertise to Ham Radio Village. If you have been sitting on the sidelines waiting for a chance to do something for ORI, this is the best event of the year.
https://defcon.org/ for details about DEFCON 10-13 August 2023
https://wirelessvillage.ninja/ for details about our Village, RF Hackers Sanctuary.
3) FPGA designs for Haifuraiya and Neptune. Want to use MATLAB/Simulink, VHDL, and Verilog to make open source digital communications designs for aerospace, terrestrial, and drones? These designs run on updated FPGA stations in ORI Remote Labs, and everything is on the microwave amateur radio bands. When you see microwave frequencies mentioned, then it’s good to also say that “we use these bands or lose them”. We’ve got plenty to do. Get in touch on #haifuraiya or #neptune on Slack or to any ORI director.
4) Meander Dipole construction phase. Project Dumbbell explores an overlooked HF antenna design. There’s been strong interest in these designs from multiple people (some of which are on this list), clubs, and organizations. We need to build the designs that MATLAB says look pretty good. Time to make it work over the air and write up some construction and measured performance articles.
As always, there’s plenty more going on, but these projects have some specific needs, today.
Thank you to everyone that supports our work. I’d like to especially thank the IEEE and ARRL for being excellent partners to ORI.
-Michelle Thompson
Neptune is an open source implementation of an open protocol for high-throughput multimedia drone communications from Open Research Institute. This protocol directly competes against the proprietary designs from DJI.
Implementation prototypes use the Xilinx Ultrascale+ and Analog Devices 9002 RFSOC. These development boards are accessible at no cost through ORI Remote Labs West. Amateur radio bands will be used to the fullest extent. Full Vivado and MATLAB licenses are included.
A review of the OFDM-based physical layer draft specification will happen shortly and invitations are going out now. Participants must be proficient with the design review process, understand OFDM, accept our developer and participant code of conduct, and support open source work.
To join as a participant please visit https://openresearch.institute/getting-started
Join the #neptune channel on ORI Slack.
To keep informed about our work you should know about our newsletter at https://www.openresearch.institute/newsletter-subscription/
Thank you to everyone that has made this innovative and groundbreaking project possible. We deeply appreciate your support and we will be successful with this design.