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3 Threads found on edaboard.com: Bpsk Linear
I created a bpsk signal in Matlab and I'm wanting to extract the unwrapped phase from the instantaneous phase obtained. The detail is that the result will apply an equation to get the centered non-linear component of the instantaneous phase which is given for "phi_NL" in the code below. This nonlinear phase should be be
Digital communication :: 08-28-2013 05:18 :: Shruti01 :: Replies: 2 :: Views: 465
There are so many class types for RF PA.Some of them are linear such as A,AB;some of them are like switch type,such as E.How to choose the class type for power amplifier?Does it depend on modulations or something else?Say,for bpsk,lienarity is easy to achieve,so we can use Class E;for QAM64,linearity is more strict,so we should use Class A (...)
RF, Microwave, Antennas and Optics :: 12-02-2008 09:20 :: haitaoz :: Replies: 2 :: Views: 989
First of all the power class of the amplifier is dependable by the type of the modulation that is transmitting.
AM modulation and some types of digital modulation (bpsk, QPSK, OFDM, QAM, etc) requires linear amplification, and the PA shall be in a linear class (A or AB).
FM modulation and some types of constant envelope digital modulation (...)
RF, Microwave, Antennas and Optics :: 06-04-2005 02:42 :: vfone :: Replies: 16 :: Views: 4136