Howtosignalprocessing
The concept and definition of Antenna Ports are same as LTE Antenna Ports. It is defined as follows (38.211-4.4. 1). 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.
- What is the antenna port?
- How many ports does an antenna have?
- What is a Dmrs port?
- What is layer mapping in 5G?
What is the antenna port?
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.
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.
What is a Dmrs port?
DMRS refers to demodulation reference signal. It is used by a receiver for radio channel estimation for demodulation of associated physical channel. DMRS design and mapping is specific to each Downlink and Uplink NR channels vize NR-PBCH, NR-PDCCH, NR-PDSCH, NR-PUSCH , NR- PUSCH.
What is layer mapping in 5G?
Layer mapping is the operation that maps one or two codewords to up to eight layers. This operation is somewhat simplified compared to LTE, where you could see one or two codewords for a given number of layers. In 5G NR, as mentioned earlier, anything up to four layers uses a single codeword.
