The internet of things is set to become the next big thing in technology. The IoT consists of multiple networked devices such as sensors and computers connected in various ways such as via wireless communication protocols. LoRa is an abbreviation of “Long Range” and is one such wireless protocol that is being used in IoT devices.
[LoRa] is a radio modulation format that gives longer range than straight FSK modulation. This is achieved by a combination of methods: it uses a spread spectrum technique called Chirp Spread Spectrum (CSS) and it uses forward error coding (in combination with whitening and interleaving).
Over at the RevSpace hackerspace, a hardware hacker called bertrik has been working with his RTL-SDR to try and reverse engineer the LoRa protocol. His goal is to make it so that anyone can receive and decode LoRa signals without needing to purchase specific hardware that supports the modulation. The reverse engineering work is not yet finished, but bertrik has already determined many parts of the protocol by looking at the signals in Audacity. He also writes that there is currently a ready made LoRa decoder available for sdrangelove, a Linux based SDR receiver application similar to GQRX and SDR#.
http://rtlsdrblog.rtlsdrblog.netdna-cdn.com/wp-content/uploads/2016/02/lora.pnghttp://www.rtl-sdr.com/decoding-the-iot-lora-protocol-with-an-rtl-sdr/
http://https://revspace.nl/DecodingLora
Top Comments
You know, you could blog directly onto this site? You may get more coverage/SEO/readership, and you can still link to rtl sdr blog.
Agreed! I read these and think later I will check. But
never do.
John,
I agree with cstanton about blogging on element14. I saw this article and clicked to the page because it is a topic of interest to me. You started out great. So, tell us more here not elsewhere.
R…