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Hi guys,
Previously i was told that in oder to create a case of
simultaneous transmission through two antennas, i
would need to utilise a time interleaver block. While
i have successfully implement a SDR that performs the
desired simultaneous transmission, i still do not
understand why do i need a
Hi guys,
I have been playing around with the benchmark_tx and
rx scripts. Now i would like to use BPSK for my
application. I realise that the standard benchmark_tx
allows only DBPSK. Is there a BPSK modulation script
available or do i need to write a new BPSK module.
Please advice. If i need to wr
Hi all,
I have two transmit antenna set up and would like both
antennas to transmit different packets at the same
time.
Eg, Packet A to be transmitted by antenna 0 and Packet
B to be transmitted by antenna 1 these two packets
must be transmitted at the same time.
How do i do this? I tried to ma
Hi,
Weeks ago i was advised here to use the time
interleaver blk to achieve true simultaneous
transmission from 2 transmit antenna. In my code i
define 2 packet_transmitters and connect them to the
time_interleaver blk. In the receiver i believed to
have acheive some sort of super position signal.
Hi Jiqun,
Thanks for your reply, i greatly appreciate the help,
I would try your suggestion, another idea is what if i
used 2 USRP? is the idea feasible? Thanks again for
the help.
--- jiqun qi <[EMAIL PROTECTED]> wrote:
> >
> In principle, in USRP, if these two transmit
> daughter boards share "
Hey jiqun,
Thanks for the reply. Alright heres how i structure my
codes. I define two payloads at the transmitter-
payload0 and payload1. Lets say payload0 is 10101010
and payload1 is 01010101. In transmit_path.py i
specify 2 different function, send_pkt0 and send_pkt1
as :
def send_pkt0(self, p
Hi guys,
I would like to ask if anyone who have experience or
have attempted to perform simultaneous transmission
using 2 antennas to provide some advice and guidance.
For example, i have 2 orthogonal signal s0 and s1 and
i wanted to transmit s0 from ant0 and s1 from ant1
simultaneously. So in th
ing 2 send_pkt functions
and running them one after another, they still have a
tiny delay in between them.
Wee
--- Eric Blossom <[EMAIL PROTECTED]> wrote:
> On Wed, Feb 27, 2008 at 02:40:20PM -0800, Wee
> Shinhan wrote:
> > Hi
> >
> > I would like to know if its possib
Hi
I would like to know if its possible to transmit 2
different data from 2 different tansmit antenna
simultaneously. Thanks.
Regards,
wee
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Hi all,
I came across the pkt_utilisation.py in GNU core and
theres a comment by the writer that every packet
benchmark_tx.py tries to send it will pad it to 512
bytes and pkt_utilisation sends a 4 bytes of sample
which means 16 complex numbers through the USB and the
end packet will be in terms o
Hi guys,
Just a few quick questions, i do a -v on
benchmark_rx.py and the results shows samples per
symbol is 2. Lets say i send a binary string 00110011
does it means that 16 complex samples represent the
string that i send? I got a feeling that the binary
string is seen as a character by the scr
>
> Message: 1
> Date: Wed, 9 Jan 2008 17:44:57 -0800 (PST)
> From: Wee Shinhan <[EMAIL PROTECTED]>
> Subject: Re: [Discuss-gnuradio] Question regarding
> vector_sink_c
> To: Eric Blossom <[EMAIL PROTECTED]>, GNU radio
>
> Message-ID:
> <[EMAIL PR
data captured,
all doesnt seems right.
Is there any blks that will be useful for my
experiment? Or do i have to write my own C++ blk to
process my needs. Thanks again.
regards,
ShinHan
--- Eric Blossom <[EMAIL PROTECTED]> wrote:
> On Tue, Jan 08, 2008 at 08:26:43PM -0800, Wee
> Shin
Hi guys,
I'm using the vector_sink block to capture complex
data from the receiver USRP (in the hope to be able to
predict the wireless channel coeff) I printed the
recevied complex data using the rx_callback function
in receive_path.py script. The problem is the
vector_sink produces endless amoun
Hi,
I trying to collect the unmodulated recieved samples
from the channel filters. But i found out that the
codes in received_path.py stored it in a dat file.
I'm wondering if it is possible to extract the samples
without opening the dat file. Just store it as a
variable so i can perform an inve
Hi Guys,
I'm currently working on a wireless channel estimater
for my SDR, honestly i'm not progressing. I would like
to ask if any of you have any sort of ideas on
implementing one. Would appreciate if there is any
sort of sample codes. Thanks alot.
Regards,
ShinHan
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