Post your questions to the LoRa community of users or showcase your knowledge and expertise by answering other’s questions. Before posting a question, make sure the information is not available elsewhere by using the search function. When your question is answered, make sure to select the best answer to make it easier for others to find, and give credit to the person who helped you!

Ask

Welcome to Support!

Search for an answer or ask a question of the zone or Customer Support.

Need help? Dismiss
qi kefengqi kefeng 

freqeuncy offset estimation of lora

hello,
    As we know,only bandwidth with 125k is supported in lorawan.I want to customize my own private agreement to increase coverage by reducing bandwidth.With the reduction of bandwidth, With the reduction of bandwidth, the crystal precision requirements become higher.my question is :
1. Is this possible for end-divice with sx1278 to do frequency offset estimation？
2. if the anser of question 1 is no,do you think it is possible for us to do frequency offset estimation rather than using an TCXO?

thanks.
Best Answer chosen by qi kefeng
SebastienSebastien (Semtech Corporation) 
Hi Qui,

Yes, it is possible to estimate the frequency offset by looking at "Frequency Error Indicator" in the Chip specification. Please note that this is support in the end-device chip (SX1278), but NOT the SX130x chip-set (gateway)

Best,

  • Subscribe to Semtech Inside Circuit

    Semtech Inside Circuit is a quarterly newsletter featuring product updates, design tips, and special events. Subscribe now and stay informed.

Semtech Is a Leading Analog & Mixed Signal Products Company

Privacy Policy | Terms of Use |CA Transparency in Supply Chains Act

©2017 Semtech Corporation. All Rights Reserved.