Saturday, August 4, 2018

theory - Baseband vs Passband modulation



I am taking a graduate level course in Networking theory and applications and I am still a bit shaky on the difference between baseband and pass band scheming. The book I am using is Computer Networks 5th edition -- Andrew S Tanenbaum


To my knowledge, passband scheming uses the changing of frequency, amplitude, and phase to modulate a analog signal. And base band uses encoding techniques like NRZ, NRZi, and Manchester encoding. How does this work along side, frequency multiplexing and CDMA for multiple device access?


And can someone give me a layman explanation of carrier signals? And how I can maybe think of them as offsets like in assembly languages. Thanks for helping!




No comments:

Post a Comment

periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

Apparently the of last four, $\ce{Mg^2+}$ is closest in radius to $\ce{Li+}$. Is this true, and if so, why would a whole larger shell ($\ce{...