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Chapter10_1 - In order to compare noise performance of...

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8/13/10 Additional Notes on Bandpass Random Process
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8/13/10 Example on Bandpass Random Process A white noise process of PSD N/2 is transmitted through a bandpass filter H(f). Represent the filter output n(t) in terms of quadrature components, and determine when the center frequency is 100 kHz. 2 2 2 and , , ), ( ), ( n n n f S f S s c n n s c
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Click to edit Master subtitle style 8/13/10 Chapter 10: Performance Analysis of Modulated Communication Systems
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8/13/10 Communication System Model metric e performanc key SNR, Output : output; receiver at power noise and power Signal : , input; receiver at power noise and power Signal : , output; tter at transmi power Signal : o o o o i i T N S N S N S S
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8/13/10 Baseband Reference System
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Unformatted text preview: In order to compare noise performance of various analog systems, we use baseband system as a reference model. Transmitter Channel Receiver (ideal LPF with B) (distortionless) (ideal LPF with B) 8/13/10 DSB-SC Systems ) ( DSB t ϕ Baseba nd filter 8/13/10 SSB-SC Systems Baseban d filter 8/13/10 AM with Synchronous Detection 8/13/10 AM with Envelope Detection 8/13/10 Comparison of Analog Modulation Modulation Type Bandwidth SNR DSB-SC 2B γ SSB B γ AM 2B PM 2(β+1)B FM 2(β+1)B γ 2 2 2 m A m + π ) ( ) 2 ( 2 2 2 p m m f • ∆ ) ( 3 2 2 2 p m m β...
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  • Winter '10
  • ZHANG
  • 2 2 M, Performance Analysis of Modulated Communication Systems, Transmitter Channel Receiver, Bandpass Random Process

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