Antenna ports in lte

1. What are antenna ports in LTE?
2. What is meant by port in antenna?
3. How many ports does an antenna have?
4. Why does LTE need two antennas?

What are antenna ports in LTE?

An antenna port is generally used as a generic term for signal transmission under identical channel conditions. For each LTE operating mode in the downlink direction for which an independent channel is assumed (e.g. SISO vs. MIMO), a separate logical antenna port is defined.

What is meant by port in antenna?

An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. From: Advanced Antenna Systems for 5G Network Deployments, 2020.

How many ports does an antenna have?

Various configurations are defined that use these C-RS antenna ports, including 2- or 4-port Tx Diversity and 2-, 3-, or 4-port Spatial Multiplexing.

Why does LTE need two antennas?

there is requirement of two antennas working at 4G LTE 0r WiMAX or WiFi. Both antenna elements works at same frequency as per the technology. Moslty one of the is Tx/Rx antenna and other one is Rx only. This arrangement provides diversity reception and enhances system performance.