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Design >> RF Design >> Output back-off requirement for RRC filtered digital Signal
https://designers-guide.org/forum/YaBB.pl?num=1239801941

Message started by AnalogAroma on Apr 15^th, 2009, 6:25am

Title: Output back-off requirement for RRC filtered digital Signal
Post by AnalogAroma on Apr 15^th, 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 ?

Title: Re: Output back-off requirement for RRC filtered digital Signal
Post by pancho_hideboo on Apr 15^th, 2009, 6:47am

See http://www.designers-guide.org/Forum/YaBB.pl?num=1190971685/7#7