This comment betrays a lack of understanding of some of these multiplexing technologies. They minimize wasted bandwidth due to signal collisions and interferenc

This comment betrays a lack of understanding of some of these multiplexing technologies. They minimize wasted bandwidth due to signal collisions and interference, but they don't increase the overall bandwidth available. Let's take TDMA as an example. TDMA means that instead of using the available bandwidth continuously, each participant only gets to use that bandwidth for a fraction of the available time. Saying that TDMA helps us increase the available bandwidth is like saying queueing up at the restroom will "provide a lot more availability than purely looking at the number of stalls". CDMA is more complicated but it's still a similar story. Look at this diagram of a CDMA signal: https://en.m.wikipedia.org/wiki/File:Generation_of_CDMA.svg https://en.m.wikipedia.org/wiki/File:Generation_of_CDMA.svg Notice how the "data" actually being transmitted is only a couple of bits, but the CDMA signal includes many more transitions. CDMA is essentially using N bits of transmission bandwidth to send a signal bit of data signal, the benefit being that if multiple signals interfere it's possible to extract one of them using some complicated math. It's like if 10 people were sharing a phone line, and instead of taking turns talking they all spoke at the same time, but repeated themselves 10 times so you could pick up enough snippets from one speaker to understand what they were saying if you concentrate hard enough.