i need some material and help on phase estimation

[bmwcoupe]

phase estimation matlab

hello
i need some material and help on PHASE ESTIMATION
(if i want to change the phase of the entire constellation MPSK)
i know few methods to do so , M-POWER method
and V&V algorithem

does someone can help ?
10x

 

[babyeric]

Re: PHASE ESTIMATION

what u mean by change the phase??

and u r doing it in baseband right i assumed..it can be done easily by V&V algorithm, angle(sum(x(t).^M)), where x(t) is the complex received signal. The more symbols of x(t), the more accurate the phase estimated.

Or if you have pilot symbols, u can get better result by doing this

angle(sum(x(t)p*(t))) where p(t) is the complex pilot symbols.

Hope it help. Maybe you can tell me what you r doing then we can exchange more information and ideas.

 

[bmwcoupe]

Re: PHASE ESTIMATION

Hi
thanks for the answer,
it is my project - implementing phase recovery .
i want to rotate the entire constellation ,
as you can see in the link above:

**broken link removed**

i want to implement it in matlab for m-ary and also in fpga...

where can i find the mathematical proof for the formula ?
estimated phase = 1/M * (SUM X(K)^M) ?????

or someone can help me understand the formula please.

what is PILOT SYMBOLS and where can i find information about it ?


thanks.

 

[ux]

Re: PHASE ESTIMATION

Hi
where can i find the mathematical proof for the formula ?
estimated phase = 1/M * (SUM X(K)^M) ?????

or someone can help me understand the formula please.

See phase sync in simulink(matlab 7.0) model: