OQPSK Demodulator

Hi all ,
      I implement qpsk demodulator on National instruments Fpga . Now i
want to Demodulate  Oqpsk signal . As the difference between qpsk and
oqpsk is  only the delay of one bit period in q channel.
 
Q1. Can a qpsk demodulator with some changes  demodulate oqpsk data ?

Q2. If it works , what changes  i should  make ?
           flow of qpsk demodulater what i made..
               1. frequency shifter (input from step 4)
               2. Matched filter
               3. AGC
               4.  coarse frequency offset estimator (Rife and broostyn
algorithm).
               5. Timing recovery (Gardener)
               6. DDPLL
               7. symbol demapping
        
      what are the stages to be modified?

Q3. suggest me some papers ?  

Thanks in advance...........
  


---------------------------------------
Posted through http://www.DSPRelated.com

On Sat, 16 May 2015 06:04:07 -0500, "eshwar402" <105862@DSPRelated>
wrote:

>Hi all ,
>      I implement qpsk demodulator on National instruments Fpga . Now i
>want to Demodulate  Oqpsk signal . As the difference between qpsk and
>oqpsk is  only the delay of one bit period in q channel.
> 
>Q1. Can a qpsk demodulator with some changes  demodulate oqpsk data ?
>
>Q2. If it works , what changes  i should  make ?
>           flow of qpsk demodulater what i made..
>               1. frequency shifter (input from step 4)
>               2. Matched filter
>               3. AGC
>               4.  coarse frequency offset estimator (Rife and broostyn
>algorithm).
>               5. Timing recovery (Gardener)
>               6. DDPLL
>               7. symbol demapping
>        
>      what are the stages to be modified?
>
>Q3. suggest me some papers ?  
>
>Thanks in advance...........
>  
>
>
>---------------------------------------
>Posted through http://www.DSPRelated.com


I responded in your other thread.    Much easier to keep things in one
thread than to have people responding to both.


Eric Jacobsen
Anchor Hill Communications
http://www.anchorhill.com