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# Phase spectrum of a 16- PSK modulated signal

Last post Wed, May 28 2014 3:12 AM by praveenmv. 5 replies.
 Started by praveenmv 27 May 2014 12:28 AM. Topic has 5 replies and 1548 views
• #### Tue, May 27 2014 12:28 AM

• praveenmv
• Joined on Tue, May 27 2014
• Posts 6
• Points 60
Phase spectrum of a 16- PSK modulated signal
 I am working on open loop modulation techniques which require me to analyze the phase spectrum of a signal. Are there any techniques by which I can measure the phase spectrum of the modulated signal with respect to a reference signal.(Average frequency of the modulated signal is known)
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• Post Points: 20
• #### Tue, May 27 2014 2:38 AM

Re: Phase spectrum of a 16- PSK modulated signal
 What kind of analysis are you doing? I suspect that you could do this with envlp analysis - but to be honest, you've not given much info as to what  you're trying to simulate or how you're trying to simulate it.Andrew.
• Post Points: 20
• #### Tue, May 27 2014 3:18 AM

• praveenmv
• Joined on Tue, May 27 2014
• Posts 6
• Points 60
Re: Phase spectrum of a 16- PSK modulated signal
 I am realizing phase modulation by selecting a series of delayed signals of same frequency appropriately through a multiplexer. The multiplexer is controlled by a delta sigma modulator. I am interested in viewing the phase spectrum of the modulated signal. As of now I am using an ideal PFD (by knowing the reference signal and its frequency)  and getting the phase spectrum from its output. But I found that there are some shortcomings in this method. Is there a easier method by which I could get the phase information?
• Post Points: 20
• #### Tue, May 27 2014 3:25 AM

Re: Phase spectrum of a 16- PSK modulated signal
 Don't know, sorry. Maybe somebody else can answer this (I might be able to make a suggestion if I was more familiar with the details of your system). Perhaps contacting customer support for advice would be a good idea, then we can take a look at what you're doing in more detail?Andrew.
• Post Points: 35
• #### Wed, May 28 2014 3:12 AM

• praveenmv
• Joined on Tue, May 27 2014
• Posts 6
• Points 60
Re: Phase spectrum of a 16- PSK modulated signal
 To be more specific and clear, I am doing a 16-PSK digital modulation wherein the digital data is the output of a delta- sigma modulator. I am interested in demodulating the same. Can I get some help on this?
• Post Points: 5
• #### Wed, May 28 2014 3:12 AM

• praveenmv
• Joined on Tue, May 27 2014
• Posts 6
• Points 60
Re: Phase spectrum of a 16- PSK modulated signal
 To be more specific and clear, I am doing a 16-PSK digital phase modulation wherein the digital data is the output of a delta- sigma modulator. I am interested in demodulating the same. Can I get some help on this?
• Post Points: 5