LTE uses two different radio links for downlink and uplink, that is, from tower to device, and vice versa. For the downlink, LTE uses an OFDMA (orthogonal frequency division multiple access), which requires MIMO.
What you are referring to is called plaque, and it's a hallmark of atherosclerosis or arteriosclerosis (they both mean the same thing). Basically, cholesterol deposits end up lining the interior walls (lumen, intima) of the arteries narrowing the opening.
Atherosclerosis is the medical term for the accumulation of fatty  deposits in the blood vessels. Atherosclerosis can lead to heart  attacks and strokes if not treated propeâ¦rly because the vessels  narrow and restrict the blood flow. Scootwhoman.