I am aware that a random phase shift will be introduced by the channel, but I
need a method to measure the received phase (even if it does not exactly match
the one from the transmitter) and store it, so I can then run some statistics
on them [😊] This is why I think that the TX and RX do not need to be
phase-synchronized.
Best,
Fernando Trejo
________________________________
From: Discuss-gnuradio
<discuss-gnuradio-bounces+f.trejotrevino=jacobs-university...@gnu.org> on
behalf of Marcus Müller <marcus.muel...@ettus.com>
Sent: Wednesday, March 22, 2017 7:02:35 PM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] Measure and record the phase at the receiver
Hi Fernando!
On 03/22/2017 06:51 PM, Trejo Treviño, Fernando Alberto wrote:
Hi Marcus!
I am implementing a transmitter and a receiver model using two USRP N210s. Both
are using GFSK modulation, and the data is transmitted at 2.4 GHz.
Cool :)
I would like to add a phase shift at the transmitter side via the use of a
multiplier block with an exponential.
Ah, so a multiply_const with a constant of
$e^{j\frac{2\pi}{f_\text{sample}\varphi}$, yeah.
Then, at the receiver I would like to receive this transmitted signal and check
if the phase matches the one that was transmitted. This is why I need a
measuring method.
Well, you can't see absolute phase without further ado – that would need your
TX and RX to be phase-synchronized (you don't know the electrical length
between your transmitter and receiver, it's absolutely random by itself).
Best regards,
Marcus
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