Re: [Discuss-gnuradio] implement d8psk on benchmark_tx.py

[George Nychis]

Hello, Tianning/Bill/Daniel!

The performance of 8PSK matches pretty similarly to 16-QAM.  So, 8PSK is 
usually never used in a real system as you get better spectral 
efficiency with 16-QAM without taking a huge hit in required SNR.

- Rick Stevens


Daniel Steven wrote:
> Hello, guys!
>
> We are using the file, benchmark_tx.py residing in the directory of 
> python/digital to do some researches. We found that gmsk, dbpsk and 
> dqpsk are the supported modulation schemes for that file, but d8psk is 
> not the supported modulation technique. Is there any reason for the 
> absence of d8psk? Is that because carrier tracking is very difficult for 
> d8psk? We wish to sort that problem out and get d8psk to work! Thanks a lot!
>
> Daniel 
>
>
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