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3F4 Data Transmission - Coggle Diagram
3F4 Data Transmission
Vector spaces
Signal Spaces
Orthonormal basis
Norm
Inner Product
Gram-schmidt - finding the orthonormal basis given a set of functions or vectors
Inner product
Orthognality
Norm
Part IB 2P7
Detection in AWGN channel
Graphical explanation
Projection of received signal onto signal space
Subtraction of noise (projected onto signal space) to
get transmitted signal
MAP - optimal detection under all priors
ML - optimal detection under uniform prior only
Probability of error detection (P_e)
(Union bound)
Channel models
Baseband
Narrow band where |H(f)| is flat - additive model
Broadband where |H(f)| is not flat - convolution model
Passband
Flat freq response - additive model
Multiple signal paths - convolution model
Noise model - white gaussian
Baseband channels
Passband channels