Re: [Discuss-gnuradio] bit rate and symbol rate in gnuradio

[Michael Dickens]

Hi Damodar - There is no block in GR that shows the actual bitrate data flow across it that I know of; wouldn't be difficult to create one, though the utility of it I'd wonder about. There is a throttle block that you'll want to use for any significant file lengths for your flowgraph, in which you can set the max average bitrate data flow through it. GNU Radio in and of itself has no real concept of time or bitrate -- thus for example your flowgraph will run as quickly as the system executing it can run it. The execution time will vary from system to system in this case, and depends on the CPU speed and memory and storage I/O rates. The concepts of time or bitrate are added via specialized blocks such as the throttle, or hardware-oriented blocks such as the audio sink / source or USRP sink / source (which provide and require specific input or output data rate settings). Hope this is useful! - MLD

On Thu, Dec 28, 2017 at 12:16 PM, Damodar Adhikari <address@hidden> wrote:

I'm new to GNU radio and trying to do QPSK transmit and receive of a text file using two USRPB210. I am trying to understand the workings of each blocks. I am trying to figure out what is the bit rate out of each blocks in my flow graph given certain size of the text file.  I could not find anything in documentation or reference manual. I have following set up of my simulation:

file source --> packet encoder with Sample per symbol = 1 ---> PSK modulation with sample per symbol (SPS) = 2 ---> AWGN channel ---> PSK demodulation with SPS = 2 --->packet decoder ----> file sink 

Is there some block in gnu radio that can be use to get the bit rate out of each blocks.