Transcription of Sampling PAM- Pulse Amplitude Modulation (continued)
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Sampling PAM- Pulse Amplitude Modulation (continued)
1 SamplingPAM- Pulse Amplitude Modulation (continued) EELE445-14 Lecture 14 SamplingProperties will be looking at for: Impulse Sampling Natural Sampling Rectangular Sampling2 Figure 2 18 Impulse SamplingsT2()()[]L++++=====++ = = =)3cos(2)2cos(2)cos(2112120)cos()(010ttt TtTDTDTtnDDnTttssssTsnsssnnnsnnsTss 3 Impulse Sampling ())( = =nsTnTtts )(tws()[][])(1)()()3cos(2)2cos(2)cos(21) ()()( = ==++++==nssssssssTsnffWTtwFfWtttTtwttwtw sL Impulse Sampling - text = = = = == = =nssstjnnssnssnssnffWTfWeTtwtwgsubsituti neqnTtnTwnTttwtws)(1)(1)()(,1712)()()()( )
4 Impulse Sampling The spectrum of the impuse sampled signal is the spectrum of the unsampled signal that is repeated every fs Hz, where fs is the sampling frequency or rate (samples/sec). This is one of the basic principles of digital signal processing. Note: This technique of impulse sampling is often used to
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