Does anyone know what the parameter alpha is ? I have confused about it several days.It is a parameter in the block gr_probe_mpsk_sbr_f. I think when we set this parameter, the ratio for the data signal and noise should be set in the received signal.But how do I set this parameter? Is there any rules I should follow to set this alpha parameter? If anyone knows something about this parameter,please tell me.Thank you.
inter From: [email protected] To: [email protected] Date: Tue, 12 Apr 2011 18:50:41 +0800 Subject: [Discuss-gnuradio] question about a parameter in the example digial-bert Hi all: When I look at the code in the receive_path.py which is under the digital-bert folder, I found this sentence: self._snr_probe = gr.probe_mpsk_snr_c(10.0/symbol_rate) I think this is to set the block which measure the snr of the signal. And after I read the code in the gr_probe_ mpsk_snr_c.h/.cc, I think (10.0/symbol_rate) may be the parameter alpha in the snr block.And the description about the parameter in the block is:Mean and variance smoothing filter constant. But I do not know why should we set the value as (10.0/symbol_rate),in other words,how should I set this value if I want use this block for other flow graph? What rules should I follow? I hope somebody can help me for that. Thanks in advance. Inter _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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