What is Logical Antenna Port (vs Physical Port)?

Antenna port is in the 3GPP specifications an abstract concept that is a logical entity rather than a physical antenna.

Each antenna port is associated with a specific set of reference signals.

5G NR contains a different type of reference signals, like DMRS for demodulation purpose & CSI-RS for channel status reporting.

An antenna port is an indication of the type of reference signal that conveyed over the radio channel.

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