bearxiong99/c2000-sdr-lora-lib

A LORA SDR PROJECT BASED ON F28335 AND SX1255

C2000_SDR_LORA_LIB

This is a LORA transreceiver based on SDR.

The hardware and software are similar to C2000_SDR(https://github.com/zhaohengbo/C2000-SDR)

Be aware of that the modulation type I used is not exactly lora.

I do a little bit change to the downchirp time so that the system seems to be more harmonious.

By the way, the link layer was a little bit different from original LORA.

The PHY link struct looks like:

(Preamble(5 upchirp, 3 downchirp) ->(                                   PHY Payload                                 ))

				    (Type -> Source Address -> Destination Address -> Data Length -> Data(32byte max))

The lora mod/demod functions are provide by library recently!

The performance of the mod/demod algorthm was found to be even better than that from semtech itself(And of course, than other SDR-Lib) while maintaining a lower algorithm complexity.

Therefore I was asked to write a patent or a paper before open-source these functions.

The recent version are just for test and fun(No shaping filter was introduced!!!), there is still a long way to go before commercial use.

Thanks for all of your support, maybe we can go on this project 3 years later in college.