LoRa/LoRaWAN tutorial 8: Link Budget and Link Margin

[@97mesut]

Thank you sir, probably the only video that actually explains what Link Budget is instead of just putting it in the title and never mention it again...

[@Erhannis]

For other viewers, had to google this - antennas don't *add* power, they *concentrate* it. Notice how the antennas are in dBi where everything else is dBm? dBi (as stated in a previous video) is "dB compared to an isotropically (uniformly) radiating antenna", so it's basically a measure of how much the antenna concentrates the signal.

[@ModestMaker]

At last - link budgets clearly explained with a sourced reference to receiver sensitivity. Thank You!

[@mustafatekin9173]

Thanks clear explanation, link margin will be in dB unit

[@medadrufus]

This is a very clear explanation. thank you for the excellent video

[@raddybaby]

Cheers mate! you are my go to source for Lora info and education! :-)

[@PALTUBABY]

good information briefly explained :)

[@mohamededbey]

Magnificent explanation!!!

[@mohammadsadeq1341]

Very good and useful, Thank you

[@narayankrishnamurthy336]

One can add dBm and db or dbi?

[@johnaweiss]

0:13 Discontinuous phase modulation?

[@RSP13]

Very clear!

[@zip1982besh]

Thank you for your video!

[@FreeMotionByAshim]

Plz tell me the link margin formula

[@fenilmangukiya8482]

awesome explanation, but what about spreading factor?,can spreading factor affect receiver sensitivity and path loss?

[@Mobilefish]

This will be explained in later tutorials. There will be at least 19 tutorials...

[@FreeMotionByAshim]

Can anyone tell me what is the formula of link margin?

[@sheminjohn123]

RssI calculation is done in dBm .How can we add two different unit as same. dB and dBm are different ,on conversion +or - 30 has to be used??

[@isaac.sharon]

My harmonic IRD shows link margin of 3, is it possible to know in dbm how much IF input signal is given to get 3 link margin ??

[@ehhh9659]

is this also applicable to microwave communication?

[@barbalsh]

Can you confirm the unit for the link budget? To me, it should be dB instead of dBm. For example, 168dBm is a huge power I cannot even think of.

[@serge_schumacher]

Finally a clear explanation! Thx man!

[@nksingh4880]

what is link margin and calculate the link margin received power in 80 dbm and receive senstindly is 90 dbm

[@Kadaa988]

i like all of your videos

[@alexandredesiqueiramelojun9976]

help me a lot thank you

[@anatoliistepaniuk8217]

is there a difference between Link Budget and Maximum Link Budget?

[@Mobilefish]

There is a difference. Maximum Link Budget is the MAXIMUM budget you are not allowed to exceed. Analogous: On a highway the maximum speed is 120 km/h but your car speed is 80 km/h Here is an article how these values are used: www.gsm-modem.de/M2M/m2m-faq/comparison_tx-energy-consumption-across-lpwan-us-12-bytes-nb-iot-lorawan-sigfox/

[@MAlikAli-zo9wd]

Fantastic explaination

[@madhuvarsha]

No information specific to LoRa transmission given . Can u please take an LoRa actual case?

[@Mobilefish]

The main factor used to compare LPWAN technologies is the link budget. This is a key parameter in determining the range of the system. For example: www.semtech.com/products/wireless-rf/lora-transceivers/SX1276 168dB maximum link budget Find other LPWAN technologies you wish to compare with LoRa

[@प्रियेसिंह-ल2ध]

Gem