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The Designer's Guide Community Forum › Design › RF Design › Output back-off  requirement for RRC filtered  digital Signal
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Output back-off  requirement for RRC filtered  digital Signal (Read 1718 times)
AnalogAroma
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Output back-off  requirement for RRC filtered  digital Signal
Apr 15th, 2009, 6:25am  
Hi Everybody,


        In ourZigbee 868.3 MHz transceiver project  , a RRC filter with roll-off factor 0.2 is used in the transmitter side. The modulation is BPSK with multi-level ASK.  What should be the output power back-off requirement for the power amplifier ? What is the PAPR for this roll-off factor ?

Does anyone know the equation for this back-off relation ?


     
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pancho_hideboo
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Re: Output back-off  requirement for RRC filtered  digital Signal
Reply #1 - Apr 15th, 2009, 6:47am  
See http://www.designers-guide.org/Forum/YaBB.pl?num=1190971685/7#7
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