Mr Vladimir

Intro to Practical
Digital converses
Lecture 2
Vladimir Stojanovi?

6.973 Communication governing body envision jump 2006
Massachusetts base of Technology
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Discrete data transmission
Messages are encoded into omen points
signal points
signal waveforms

Signal points are mapped to signal waveforms
Modulation
Cite as: Vladimir Stojanovic, course materials for 6.973 Communication System Design, Spring 2006.
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Modulation and de- inflection
e.g. double star Phase-Shift Keying (BPSK)

x0(t)

x1(t)

Cite as: Vladimir Stojanovic, course materials for 6.973 Communication System Design, Spring 2006.
MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology.
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6.



973 Communication System Design

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Vector signal representation
Maps continuous signals to discrete vectors
Significantly simplifies transcription analysis
signal
signal points
waveforms
basis functions
Modulator

Cite as: Vladimir Stojanovic, course materials for 6.973 Communication System Design, Spring 2006.
MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology.
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BPSK example
Signal constellation

What is the information rate (R) of this modulation?
Cite as: Vladimir Stojanovic, course materials for 6.973 Communication System Design, Spring 2006.
MIT OpenCourseWare (http://ocw.mit.edu/), Massachusetts Institute of Technology.
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Manchester modulation example (Ethernet)...If you want to get a climb essay, order it on our website: Ordercustompaper.com



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