To create or modify CDMA Link level data set, select the CDMA Link level data command from the Library pull-down menu or directly CTRL+SHIFT+L. This activates the CDMA Link level data window which displays a list of existing CDMA Link level data:
Figure 292: CDMA Link level data library elements
Regarding the library sets of CDMA Link level data, the default sets distributed within SEAMCAT library are understood to be sufficient to cover typical CDMA systems expected to be deployed in Europe and their respective frequency bands. You may defined any additional link level data to cover other types of CDMA systems. However, it is recommended that only users with advanced knowledge of CDMA systems develop the new CDMA Link level data for SEAMCAT simulations as several serious considerations should be undertaken before creating new Link level data:
- The SEAMCAT CDMA Link level data have different formats for uplink and downlink sections of CDMA link. In particular, the Link level data for uplink provides Eb / No requirements, whereas downlink data define the Ec / Ior requirements;
- You should check carefully that the newly created CDMA link level data is appropriate for the SEAMCAT's CDMA simulation methodology for the respective section of the link (uplink/downlink).
From the worskpace, you can select the library that you want to use as shown below.
Figure 293: Example on how to import/export to/from the workspace/library for
the CDMA Link Level data library elements
When adding or editing a data set, a table with data points is displayed and new data points entered will appear on the graph (for Downlink sets). For Downlink sets, every data point must as a minimum contain a geometry value, otherwise it is invalid and it will not be possible to leave the editing dialog.
Basic information about the link-level data set can be viewed and amended in by clicking Basics button in the sidebar of the edit window. This will display a new dialog.
Note: When Ok is clicked in the basics dialog any information changed in this dialog will be saved immediately even if Cancel is subsequently pressed in the overlying data point window.
Figure 294: Example on how to edit a CDMA Link Level data element