Feb , 2014 4Semtech Confidential
How different is Lora™ from DSSS ?
Lora™ is designed for low data rates compared to other DSSS
systems (CDMA, Wifi…)
Lora™ is using high spreading factors allowing large
processing gains more or less like GPS technology
Lora™ is capable of « on the fly » demodulation
As opposed to traditionnal DSSS systems like GPS
Makes Lora™ very suitable for low power operation
Lora™ is non sensitive to frequency offsets
Basic +/- 30 ppm crystal is sufficient for most applications
Other systems using long spreading factors (GPS..) do require very precise time
reference
Lora™ is implemented in a smart way
Entire demodulation engine is contained in 50K gates
