What is E-UTRA & what is its function ?
E-UTRA has the following features:
Flexible bandwidth usage with 1.25 MHz to 20 MHz bandwidths. By comparison, W-CDMA uses fixed size 5 MHz chunks of spectrum.
Increased spectral efficiency at 2-4 times more than in 3GPP(HSPA) release 6
Peak download rates of 326.4 Mbit/s for 4x4 antennas, 172.8 Mbit/s for 2x2 antennas for every 20 MHz of spectrum. 
Peak upload rates of 86.4 Mbit/s for every 20 MHz of spectrum.
Sub-5ms latency for small IP packets
E-UTRA uses orthogonal frequency-division multiplexing (OFDM) and multiple-input multiple-output (MIMO) antenna technology to support more users, higher data rates and lower processi ...more