Re: [Discuss-gnuradio] Re g : benchmark_add_channel.py

[Tom Rondeau]

On Fri, Apr 13, 2012 at 3:06 AM, sumitstop
<address@hidden> wrote:
>
> Thanks Tom ... That is really a useful thing :-)
> Although this script is only in ofdm folder and not in the digital folder
> but I guess the same can be used for both.

Glad that helps.

And it's in both narrowband and ofdm:
http://gnuradio.org/cgit/gnuradio.git/tree/gr-digital/examples/narrowband
http://gnuradio.org/cgit/gnuradio.git/tree/gr-digital/examples/ofdm

Tom


> Tom Rondeau-2 wrote:
>>
>> On Wed, Apr 11, 2012 at 1:18 PM, sumitstop
>> <address@hidden> wrote:
>>>
>>> I was wondering what is this benchmark_add_channel.py for. Is it for
>>> adding a
>>> new channel "on the fly" to an ongoing OFDM transmission  :confused:
>>>
>>> using verbose it says the format to run it as
>>>
>>> ./benchmark_add_channel.py [options] <input file> <output file>
>>>
>>> -----
>>> Sumit Kr.
>>> Research Assistant
>>> Communication Research center
>>> IIIT Hyderabad
>>> India
>>
>>
>> The benchmark_add_channel.py (which are in both the ofdm and
>> narrowband examples) is designed to let people play with channel
>> properties in simulation. The benchmark_tx scripts have a --to-file
>> that saves all of the data into a local file instead of trying to use
>> a USRP to go over the air. Likewise, the benchmark_rx scripts have a
>> --from-file to read in the data from a file. The benchmark_add_channel
>> takes in the file and performs the operations that are specified (AWGN
>> noise power, frequency offset, timing offset, etc.) and outputs a new
>> file that can then be read in by the receive scripts.
>>
>> Tom
>>
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>>
>>
>
>
> -----
> Sumit Kr.
> Research Assistant
> Communication Research center
> IIIT Hyderabad
> India