PSK MOD DEMOD IQ sample capture

[np1989]

Hello all,

I am new to Labview. I wanted to capture IQ samples from a signal generated using a standard PSK modem (COTS). We also want to store corresponding demodulated bits using a standard PSK demodulator LABVIEW example.

The IQ samples (oversampling rate = 16) and their corresponding demodulated bits must in synchronization. How to simulate it in LABVIEW. I am using a standard PSK demodulator example.

[altenbach]

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@np1989 wrote:

... I wanted to capture IQ samples from a signal  .... How to simulate it in LABVIEW. 

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Processing real data is not the same as a simulation. Can you be a bit more specific?

[np1989]

1. I am sending customized data packet (Unique word + data, say 100 bytes)  at an interval of 1 sec to modulator (COTS).

2. Modulator setting (Rf out at = 950MHz, Mod=BPSK, FEC=disable, Datarate=2.4Kbps)

3. Modulator output is connected to NI (COTS) receiver block. (NI setting: LO freq=950MHz, mod=BPSK, NO FEC, sampling rate=9.6Kbps )

4. Now we wish to tap both IQ samples and their corresponding bits of received data (which should match to original data)

How to design a system in LabVIEW (includes Demodulator block)? Currently I am using a standard PSK demodulator example.