What is the "Point of Diminishing Returns" for LTE?
I've read the RSSIs in the -70s are a goal for good 3G and that investing $$$ in amps and external antennas won't show much speed improvements.
Does this apply to LTE also, or is there a different number to shoot for?
Also, what about noise levels? What is a good number to shoot for with noise. Is noise or RSSI more important to achieve the fastest data transfer speeds?