• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 16 subscribers
  • Views 208 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BWSignal

Tony Siu
Intellectual 610 points

Dear All,

   There is a design notes telling us to calculate BWchannel which is BWsignal + 4 * XTALppm * Frf

   And it say BWsignal depends on the data rate and modulation format. So is there any way to calculate BWsignal?

Thank you and regards

 

Tony Chun Tung Siu

  • 0
    TI__Mastermind 39860 points

    As a first approximation use Carson's rule: Signal bandwidth = 2 X (Peak Deviation + Highest Modulating Frequency).

    For 2-FSK, 2xPeak Deviation = Frequency separation. Highest modulation frequency is for a 0-1 sequence and 2xHighest Modulating Frequency = Data Rate

    Thus, Signal bandwidth = 2 X (Peak Deviation + Highest Modulating Frequency). = Frequency Separation + Data Rate

    You will find a lot of info on Carson's rule on the internet.