(To be removed) Estimate frequency offset for PSK signal
comm.PSKCoarseFrequencyEstimator
will be removed in a future release. Use comm.CoarseFrequencyCompensator
instead.
The PSKCoarseFrequencyEstimator
System
object™ estimates frequency offset for a PSK signal.
To estimate frequency offset for a PSK signal:
Define and set up your PSK coarse frequency estimator object. See Construction.
Call step
to estimate frequency offset for a PSK signal
according to the properties of comm.PSKCoarseFrequencyEstimator
. The behavior of step
is specific to each object in the toolbox.
Starting in R2016b, instead of using the step
method to
perform the operation defined by the System
object, you can call the object with arguments, as if it were a function. For example,
y = step(obj,x)
and y = obj(x)
perform equivalent
operations.
H = comm.PSKCoarseFrequencyEstimator
creates a PSK coarse frequency
offset estimator object, H
. This object uses an openloop technique to
estimate the carrier frequency offset in a received PSK signal.
H = comm.PSKCoarseFrequencyEstimator(Name,Value)
creates a PSK coarse
frequency offset estimator object, H, with the specified property Name
set to
the specified Value
. You can specify additional namevalue pair arguments in
any order as (Name1,Value1,...,NameN,ValueN).

Modulation order the object uses Specify the modulation order of the PSK signal as a positive, real scalar of data type
double. This value must be a positive power of 2. The default is 

Estimation algorithm to object uses Specify the estimation algorithm as one of 

Desired frequency resolution (Hz) Specify the desired frequency resolution for offset frequency estimation as a positive,
real scalar of data type double. This property establishes the FFT length used to perform
spectral analysis, and must be less than or equal to half the 

Maximum measurable frequency offset (Hz) Specify the maximum measurable frequency offset as a positive, real scalar of data type
double. The default is The value of this property must be less than 

Sample rate (Hz) Specify the sample rate in samples per second as a positive, real scalar of data type
double. The default is 
reset  (To be removed) Reset states of the PSKCoarseFrequencyEstimator object 
step  (To be removed) Estimate frequency offset for PSK signal 
Common to All System Objects  

release  Allow System object property value changes 
comm.PSKCoarseFrequencyEstimator
will be removedcomm.PSKCoarseFrequencyEstimator
will be removed. Use comm.CoarseFrequencyCompensator
instead.
[1] Luise, M. and R. Regiannini. “Carrier recovery in alldigital modems for burstmode transmissions”, IEEE^{®} Transactions on Communications, Vol. 43, No. 2, 3, 4, Feb/Mar/April, 1995, pp. 1169–1178.