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Looking for a detailed block diagram of QPSK modulator

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kavitha_bonthu

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Hello every body

In QPSK modulator block where do we use raised cosine filter for shaping the signal.
I would be glad if any body give me the detailed block diagram of QPSK modulator

Thank you
 

Re: Regarding QPSK

You can check any communication book and you will find tos of block diagrams, anyway tipically the pulse shaper is before to send the data to DAC.
 

Re: Regarding QPSK

Raised Cosine Filter is preffered bcoz it reduces the ISI factor.
This Filter is used after the phase discriminator module...for block diagram simply refer to PLL one...u are going to find your answer.
 

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