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Filtered QPSK BER

 
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yazou35



Joined: 23 Apr 2006
Posts: 18
Helped: 5


Post06 May 2006 23:58   Filtered QPSK BER

Hello,

After modulating using QPSK the spectrum of modulated signal decrease as (sinc(pi*f*T))^2. In order to decrease the interference with adjacent channels we can use a BPF on the modulated signal. Does you know if this filtering changes the BER performance of the modulated QPSK ? Any formula or book ?

Thankx
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