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2PSK- - 解 调载 波 提 取e () t = m() t Cos( ω t+ϕ)000e () t = m() t Cos( ω t + ϕ) Cos( ω t + θ)01cc1 1= mtCos () ( ϕ − θ) + mtCos () (2 ωct+ θ + ϕ)2 2经 LPF后 :1e01() t = m() t Cos( ϕ−θ)2e () t = m() t Cos( ω t+ ϕ)Sin( ω t+θ)02c1 1= mtS () in( ϕ − θ) + mt ()Sin(2 ωct+ θ + ϕ)2 2经 LPF后 :1e01() t = m()Sin( t ϕ−θ)2cc2011-9-11 36
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