You have windows enabled in the FFTs. Switch to rectangular windows for
OFDM (you can check out the OFDM examples).
M
On 04/16/2016 02:53 PM, Abhinav Jadon wrote:
> Hi,
> I made two flowgraphs.
> 1st flowgraph : Source -> BPSK modulation -> Constellation Sink
> 2nd flowgraph : Source -> BPSK modu
On Sat, Apr 16, 2016 at 6:36 PM, Laur Joost wrote:
> The phase modulation is according to the equation
>
> S(t) = A*cos(2*pi*f*t + s(t)*pi/2),
> s(t) = RRC(2*b(t) - 1)
>
> where
> S - modulated carrier
> A - Amplitude of the modulated carrier
> f - carrier frequency
> s - modulating signal (shape
The phase modulation is according to the equation
S(t) = A*cos(2*pi*f*t + s(t)*pi/2),
s(t) = RRC(2*b(t) - 1)
where
S - modulated carrier
A - Amplitude of the modulated carrier
f - carrier frequency
s - modulating signal (shaped pulses)
b - bit value at time t
But I guess that's moot, given the n
Hi,
I made two flowgraphs.
1st flowgraph : Source -> BPSK modulation -> Constellation Sink
2nd flowgraph : Source -> BPSK modulation -> IFFT -> FFT -> Constellation
Sink
The source is configured such that if only transmits 1s.
Therefore one would expect the constellation plot to have one dot on th
Forgot to add the list
-- Forwarded message --
From: Andy Walls
Date: Sat, Apr 16, 2016 at 4:16 PM
Subject: Re: [Discuss-gnuradio] matched filter for BPSK produced by phase
shifting
To: darem...@gmail.com
*From*: Laur Joost *Subject*: [Discuss-gnuradio] matched filter for BPSK
pr
Thanks for the response, Marcus!
Analog phase modulator, is more correct I guess.
The RRC filtered signal goes into a signal generator's external modulation
input, and I'm receiving the signal from the generator with USRP.
So: PRBS source (random devboard) -> RRC and DC offset (some IC) -> Phase
Hi Laur,
On 16.04.2016 18:30, Laur Joost wrote:
> Hi all!
>
> I need a clue where to start.
>
> I have a signal that is BPSK that is modulated not by applying the
> filtered baseband to the in-phase component, but instead doing literal
> analog phase shifting.
>
> The result is that the signal tra
Hm, those are usually good. What's the exact model ("lspci" will tell)?
What's your OS?
On 16.04.2016 18:10, monika bansal wrote:
> Hi Marcus
>
> The network card is PCI Express Gigabit Ethernet Controller with 1Gbps
> capacity.
>
> Thanks,
> Monika
>
> On Fri, Apr 15, 2016 at 6:38 PM, Marcus Mül
Hi I just tried your suggestion and it was ok for the RX side, but in the
Tx side the decimation wont go up to 1024, it only decimates up to 512,
-- Asking for clock rate 16.384 MHz
-- Actually got clock rate 16.384 MHz
-- Performing timer loopback test... pass
-- Performing timer loopback test...
Hi all!
I need a clue where to start.
I have a signal that is BPSK that is modulated not by applying the filtered
baseband to the in-phase component, but instead doing literal analog phase
shifting.
The result is that the signal transitions between the -1 and 1 symbols not
through zero, but inst
Hi Marcus
The network card is PCI Express Gigabit Ethernet Controller with 1Gbps
capacity.
Thanks,
Monika
On Fri, Apr 15, 2016 at 6:38 PM, Marcus Müller
wrote:
> No harm done :) So the point is that is still pretty bad, and usually
> shouldn't happen, unless your PC is *much* too slow, an
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