AWGN Channel - Simulink

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andrea
andrea 2012-5-31
Hi guys, I need to use AWGN channel block in simulink but I don't understand why, when I insert SNR mode, it asks me to insert also the Input Signal Power.... What is it? Because when I rice the Input Signal Power (with SNR kept constant), the BER became worse!!! So The signal who I specify the Power seems to be another noise source....
Can you explain me better?
P.S. I've a Bernoulli source, with GMSK modulation and after I've the channel.
Thank's everybody. Andrea

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