2 x MIMO Transmitter using USRPN210

GNU Radio
1

Hi

I am trying to use two USRPN210 to transmit using 2 transmit antennas
for
MIMO,. I have successfully constructed a receiver using 2 USRPs with
Reciever MIMO with 2 reciever antennas having a daughter board XCVR2450
using the freely available file multi_sampler.cpp … I have been able to
recieve the signals synchronously with zero phase offset on both USRPS
which are interconnected through the MIMO cable successfully.
Now At the transmitter end I have 2 USRPs interconnected through
MIMO
cable having the daughter board XCVR2450 and the USRP connectedd to the
host PC … I have been trying to modify the tx_sample_to_file to enable
MIMO transmitter but I haven’t solution as yet
for 2x MIMO reciever i have reffered mimo_sync_with_usrp.pdf document,
but
is there any similar procedure to achieve 2X MIMO for transmitter

Thanks

Regards

RAM

2

---------- Forwarded message ----------
From: “Ramcharan M C” [email protected]
Date: 17 May 2013 10:46
Subject: 2 x MIMO Transmitter using USRPN210
To: [email protected]
Cc:

Hi

I am trying to use two USRPN210 to transmit using 2 transmit antennas
for
MIMO,. I have successfully constructed a receiver using 2 USRPs with
Reciever MIMO with 2 reciever antennas having a daughter board XCVR2450
using the freely available file multi_sampler.cpp … I have been able to
recieve the signals synchronously with zero phase offset on both USRPS
which are interconnected through the MIMO cable successfully.
Now At the transmitter end I have 2 USRPs interconnected through
MIMO
cable having the daughter board XCVR2450 and the USRP connectedd to the
host PC … I have been trying to modify the tx_sample_to_file to enable
MIMO transmitter but I haven’t solution as yet
for 2x MIMO reciever i have reffered mimo_sync_with_usrp.pdf document,
but
is there any similar procedure to achieve 2X MIMO for transmitter

Thanks

Regards

RAM

3

On 22 May 2013 12:37, [email protected] wrote:

4

On 22 May 2013 17:26, “Ramcharan M C” [email protected] wrote:

5

On 22 May 2013 17:27, “Ramcharan M C” [email protected] wrote:

6

On 05/22/2013 11:16 PM, Ramcharan M C wrote:

L is printed for a late packet. The time in the packet > time in the
device:
http://files.ettus.com/uhd_docs/doxygen/html/structuhd_1_1async__metadata__t.html#a2be1b5c0351746c78fa3bcb74a8ff5da

-josh

7

On 24 May 2013 17:55, “Ramcharan M C” [email protected] wrote: