How multi layer map to different beams in LTE Beamforming

1. How does MIMO beamforming work?
2. Does beamforming use multiple antennas?
3. What is MIMO layer in LTE?
4. What are MIMO layers?

How does MIMO beamforming work?

MIMO (Multiple Input Multiple Output) antennas operate by breaking high data rate signals into multiple lower data rate signals in Tx mode that are recombined at the receiver. Beamforming arrays are inherently different from MIMO in that the multiple columns of dipoles work together to create a single high gain signal.

Does beamforming use multiple antennas?

Beamforming is a signal processing procedure used with multiple arrays of antennas at the transmitter side and/or receiver side to simultaneously send or detect multiple signals from multiple desired terminals to increase system capacity and performance.

What is MIMO layer in LTE?

MIMO (Multiple-Input Multiple-Output)

Essentially MIMO, employs multiple antennas on the receiver and transmitter to utilize the multi-path effects that always exist to transmit additional data, rather than causing interference. The schemes employed in LTE again vary slightly between the uplink and downlink.

What are MIMO layers?

Single-user MIMO (SU-MIMO) is the ability to transmit one or multiple data streams, called layers, from one transmitting array to a single user. SU-MIMO can thereby increase the throughput for that user and increase the capacity of the network.