> "There's also beamforming and MIMO" No. Beamforming attempts to increase apparent power by changing parameters. One could just as easily say "moving sender an

> "There's also beamforming and MIMO" No. Beamforming attempts to increase apparent power by changing parameters. One could just as easily say "moving sender and recipient closer". MIMO is also manipulation of sending and receiving antennae, and therefore irrelevant to the discussion about transmitting through a channel with a fixed noise level. Yes beamforming changes the SNR at the receiver, by shaping the beam to be more "concentrated", i.e. focusing onto the receiver. It is highly relevant because yes by increasing the SNR at your receiver you do increase the throughput (albeit only logarithmically). MIMO is very relevant to the discussion, because instead of increasing bandwidth you increase dimensionality of your channel, which has the same effect (i.e. you increase the term in front of the log in Shannon's formula). I don't know why this should be irrelevant for a channel with fixed noise level (also it's probably more correct to say fixed SNR).