Hi Fernando,
What if I told you I can predict the relative phase to be
uniformly distributed across (0,2π( , if you don't synchronize?
Anyway, phase is just the angle of the complex sample you're
receiving, so: use the complex_to_arg block!
Best regards,
Marcus
On 03/23/2017 05:53 PM, Trejo Treviño,
Fernando Alberto wrote:
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,
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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