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Unformatted text preview: mportant properties:
Linear system: Scale change: Modulation property: The Sampling Theorem:
1. Sampling a bandlimited (W) waveform (Sampling rate at least 2W samples/sec.)
Reconstruction from samples: 2. Sending pulses through a bandlimited
communication channel: response H(f) .
If H(f) = 0 for *f*$ W,
up to a maximum 2W pulses per second (bauds)
can be sent through the channel. CHANNEL IMPAIRMENTS, LIMITATIONS
Distortion - linear, nonlinear, Noise, Attenuation,
Interference, limited frequency bandwidth
LINEAR DISTORTION: H(f) = A(f)eJè(f)
Combat with equalizer filter E(f), so E(f)H(f) has ideal filter
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This note was uploaded on 01/26/2014 for the course EE 362 taught by Professor Laporta during the Fall '08 term at Pennsylvania State University, University Park.
- Fall '08