Hi dear.
LTE (long term evolution) is a long-term evolution of UMTS (universal mobile communications system) technical standard formulated by 3GPP (the third generation partnership project). It was officially approved and launched at 3GPP Toronto conference in December 2004. OFDM (orthogonal frequency division multiplexing) and MIMO (multi input) are introduced into LTE system& Multi output (MIMO) and other key technologies have significantly increased the spectrum efficiency and data transmission rate (the theoretical maximum downlink transmission rate of 2x2mimo in the case of 64QAM with 20m bandwidth is 201mbps, after excluding the signaling overhead, it is about 150Mbps. However, according to the actual networking and terminal capacity limitations, it is generally considered that the downlink peak rate is 100Mbps, and the uplink behavior is 50Mbps), and supports multiple channels Bandwidth allocation: 1.4mhz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz. It supports the world's mainstream 2G / 3G frequency band and some new frequency bands. Therefore, the spectrum allocation is more flexible, and the system capacity and coverage are significantly improved.