m_llaa
Joined: 12 Mar 2006
Posts: 272
Helped: 23
Location: My Love Iran
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 12 Apr 2006 21:53 Re: Linear Phase Mod index? |
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hi
x(t)=Acos(wt+φs(t))
the modulation index (φ) in PM is the maximum deviation of phase beacuse of the message, s(t)
if u transmit by digital modulation u can use CPM(Continuous Phase Mod) or CPFSK(Continuous Phase FSK) in yhis digital mod (h = 2 fd T). h is mod index like φ in PM. then if u change your bit rate u should modify T in your example T2/T1=2 then h2/h1=2
u can find more detail in "Digital Communication" by Proakis chapter 4
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