Howtosignalprocessing
- What is antenna port mapping?
- How many ports does an antenna have?
- Why layer mapping in LTE?
- What is layer mapping in 5G?
What is antenna port mapping?
The antenna mapping jointly processes the modulation symbols corresponding to the one or two transport blocks and maps the result to the set of antenna ports to be used for the transmission.
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 layer mapping in LTE?
(2) Layer Mapping : This is the process where each codeword is mapped to mapped to one or multiple layers. Refer to Layer Mapping page. (3) Precoding : This is process where the layer data are allocated to multiple antenna ports (logical antenna ports in this stage). See the first section of Precoding page for details.
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.
