×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Indoor Radio Channel (2GHz)

Indoor Radio Channel (2GHz)

Indoor Radio Channel (2GHz)

(OP)
During an experiment we measure the amplitude of a signal and its phase.Some files were produced.After that we plot the values amplitude-freq and phase-freq.Now i have to apply the auto correlation on each frequency in order to calculate the coherence bandwidth using matlab. The textbooks are not very helpful.Is anybody can give me some hints?

RE: Indoor Radio Channel (2GHz)

Suggestion: The normalized version of cross-correlation function is called the coherence function. It is defined as:
Cf,g(u)=Hf,g(u)/[Hf(0) x Hg(0)]**0.5
with property of:
-1 <=Cf,g(u)<=+1 for all u
where
Hf,g=integral from -infinity to +infinity of [f(t)g(t-u)]dt=integral from -infinity to +infinity of [f(t-u)g(t)]dt
and
Hf(u)=integral from -infinity to +infinity of [f(t)f(t+u)]dt=integral from -infinity to +infinity of [(f(t-u)f(t)]dt
Hg(u)=integral from -infinity to +infinity of [g(t)g(t+u)]dt=integral from -infinity to +infinity of [g(t-u)g(t)]dt

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources