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Library: CDMA Link Level Data Sets

Regarding the library sets of CDMA Link level data, the default sets distributed within SEAMCAT-3 library are understood to be sufficient to cover typical CDMA systems expected to be deployed in Europe and their respective frequency bands. Any additional link level data may de defined by the users themselves 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;
• The user 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).

To create or modify CDMA Link level data set, select the CDMA Link level data command from the Library pull-down menu. This activates the CDMA Link level data window which displays a list of existing CDMA Link level data and provide following management functions:

• To create a new CDMA Link level data set, click on the Add button.
• To edit an existing CDMA Link level data set, select it in the list and click Edit.
• To duplicate (copy) an existing CDMA Link level data set, select it in the list and click Duplicate.
• To delete an existing CDMA Link level data set, select it in the list and click Delete.
• To load CDMA link-level data sets from a file click Load.
• To save all CDMA link-level data sets to a file click Save All.
• To restore the default CDMA link level data sets that is pre-installed in SEAMCAT click Restore defaults.

CDMA Link level data library view:

Add and Edit

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.

Edit basics

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.

Restore defaults

For restoring the original link level data sets that had been pre-installed in SEAMCAT click Restore defaults in the library window. A confirmation dialog will appear as this function purges all existing data leaving only the standard sets.

Loading / Saving

The Link-level data may be loaded from- and saved to individual files in XML format. When loading SEAMCAT's XML handler will validate the XML structure in those input files, so if the file has been edited by hand, at any time, please ensure that the editions adhere to the standard XML formatting conventions. Otherwise the load operation will fail. A file-chooser dialog is displayed for both loading and saving operations and the desired filename can be selected. Please make sure you have read/write access to the selected path.