[Discuss-gnuradio] How to measure a throughput in the given scenario???

Hi Everyone,

I am going to start with the general network settings:

Number of Computer : 01

Number of USRPs: 03 (i.e. Source node, Relay node, and Destination node)

USRPs and the computer are connected through an unmanaged switch.

Gnuradio-Companion Version 3.7.2.1

Test with simple random signal

During this test, a source USRP node generated and transmitted a simple random signal over the wireless network using the program gmsk_tx_random.grc (file attached).

The relay USRP node is responsible to receive and re-transmit the signal of the source USRP node to the destination USRP node. The relay node program tx_rx.grc is used for this purpose (file attached).

The destination USRP node received the signal from the relay node and displayed it on the computer screen. The destination program name is gmsk_rx_random.grc and attached herewith.

This program is running successfully as you can see in the attached file named with random_sig.png. However, at the initial time the gnuradio-companion screen only had a single “U” but as the time goes by the string is going larger and larger as indicated below.

UUUUUUUUUUDUUUDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDDUUUUUUDDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUDUUUUUUUDDUDDUDDDUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU

Here, I know that U means “PC not providing data quickly enough”, whereas D means “PC not keeping up with received data from USRP). One interesting thing that I've noticed is that as the string of U and D increases, it switched off the transmitting LED of the relay USRP node permanently.

In this situation, I want to calculate the throughput in between of USRP nodes and the computer. Can anyone let me know how I achieve this in gnuradio-companion.

Waiting for earliest reply. Thanks.

Regards,

Syed Aqeel Raza

From:	Syed Aqeel Raza
Subject:	[Discuss-gnuradio] How to measure a throughput in the given scenario???
Date:	Sat, 1 Mar 2014 05:54:01 -0500