Ethernet was famously initiated my a sketch on a paper napkin. I get the feeling LoRa's concepts was designed over a can of Pringles (stackable potatoe chips). Makes 'chips' a more understandable concept. Enjoying your tutorials; looking forward to the practical work.
Thanks for the info. The series has been very instructive, especially since a ton of info out there seems more promotional than technical if that makes any sense!
Thank you for the good explaination. Helped me alot with working on LoRa technology. Audio visuals are sounding like alien noises. Keep up the good content Mobilefish!
Thank you so much by this awesome video. I would like to know one thing. When you say that your explanation of the chip is to keep it simple but that reality is a little bit different, how exactly is this gap? I would like to send my self-made LoRa packet creating the chirps and receive it in a commercial LoRa receiver and I don't want to get into a scrub, or better say, get into an impossible task.
Thank you for an excellent LoRa tutorial series! I am intending to use a very simple mobile node. The node is subjected to Doppler frequency shifts due to its speed and I have calculated those shifts. At this point of your tutorial series I would like to know, which parameters does this frequency shift affect? Does it have a direct influence on the chirps? Please assist in helping me understand the practical implications of a LoRa node undergoing doppler frequency shifts. Thanks and keep up the good work!
A very good question. Unfortunately I have not done any research on that subject. I am focussing on static nodes. You might post your question at: www.thethingsnetwork.org/forum I have found several hits on Google when searching for "lorawan doppler effect"
The doppler spread, caused due to the mobility of the node, results in time selective behavior of the channel. If there is a high doppler spread, the coherence time will be lesser than the symbol time and thus there will be fast fading. Conversely, for a smaller doppler spread the coherence time will exceed the symbol time resulting in slow fading.
Since i see more review Loran can connect over 400 km only with 6dbm antena i want to tray usinh it. But can Lora can use 2.4 Ghz or 5.8 Ghz frequently?
See in a later tutorial. SF8 takes twice the time as SF7, SF9 twice that of SF8. So by the time SF9 symbol is transmitted (9 bits), 4 SF7 symbols got transmitted (4 times 7 bits).
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A lucid explanation emerges from a fog of misinformation and confusion. Your presentation is excellent. Thank you.
Ethernet was famously initiated my a sketch on a paper napkin. I get the feeling LoRa's concepts was designed over a can of Pringles (stackable potatoe chips). Makes 'chips' a more understandable concept. Enjoying your tutorials; looking forward to the practical work.
Thanks for the info. The series has been very instructive, especially since a ton of info out there seems more promotional than technical if that makes any sense!
Thank you for the good explaination. Helped me alot with working on LoRa technology. Audio visuals are sounding like alien noises. Keep up the good content Mobilefish!
it's really (overall) very clear explanation, Thanks..
A clear explanation, great job!
Thanks so much for very clear explanation!
Thanks for the tutorial, it was well presented.
Thanks a lot for your easy explanation.
Thank you so much by this awesome video. I would like to know one thing. When you say that your explanation of the chip is to keep it simple but that reality is a little bit different, how exactly is this gap? I would like to send my self-made LoRa packet creating the chirps and receive it in a commercial LoRa receiver and I don't want to get into a scrub, or better say, get into an impossible task.
A perfect tutorial ! Thanks for your sharing,I truely understand chip and chips wow~~~
What are the growing range of Lora to change spreading factor ?.
How to calculate this range(when SF change)?
Thanks forma sharing the presentation
thank you
Thank you very much. I understand that what is "SF".^_^
Thank you for an excellent LoRa tutorial series! I am intending to use a very simple mobile node. The node is subjected to Doppler frequency shifts due to its speed and I have calculated those shifts. At this point of your tutorial series I would like to know, which parameters does this frequency shift affect? Does it have a direct influence on the chirps? Please assist in helping me understand the practical implications of a LoRa node undergoing doppler frequency shifts. Thanks and keep up the good work!
A very good question. Unfortunately I have not done any research on that subject. I am focussing on static nodes. You might post your question at: www.thethingsnetwork.org/forum
I have found several hits on Google when searching for "lorawan doppler effect"
@@Mobilefish thank you for the reply. I shall do some further research on the subject.
The doppler spread, caused due to the mobility of the node, results in time selective behavior of the channel. If there is a high doppler spread, the coherence time will be lesser than the symbol time and thus there will be fast fading. Conversely, for a smaller doppler spread the coherence time will exceed the symbol time resulting in slow fading.
Thanks, helped me a lot :)
So im trying to understand the SF factor. I live in an apartment in a city To get the most range out of the link do I use a high or low SF?
You use a high SF (12) to get the longest range, but notice that this consumes the highest energy and also the lowest data rate so it's a trade-off.
Since i see more review Loran can connect over 400 km only with 6dbm antena i want to tray usinh it.
But can Lora can use 2.4 Ghz or 5.8 Ghz frequently?
No. See LoRa radio's and their frequencies: www.semtech.com/lora/lora-products
Nice, But why SF7 is much faster than SF9 in transmitting ?
See in a later tutorial. SF8 takes twice the time as SF7, SF9 twice that of SF8. So by the time SF9 symbol is transmitted (9 bits), 4 SF7 symbols got transmitted (4 times 7 bits).
thank you man!
в 1:48 должно быть 128, а не 127?