# 13.4.1 System elements

To create or modify a library element containing parameters of a particular system, i.e. generic, cellular network like CDMA or OFDMA, select the system library lements command from the **Library pull-down menu** or directly **CTRL+SHIFT+S**.

A list of existing pre-defined systems will be selectable as shown in Figure 282 for a generic system and Figure 283 for cellular systems (e.g. CDMA UL network).

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/QfEnIgBAOeMb5rtR-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-19sripf" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="401" data-vc="media-single" data-width="708" data-width-type="pixel" id="bkmrk-figure-282%3A-example-"><div class="css-1szupxi"><div data-alt="" data-collection="contentId-493110" data-context-id="493110" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="723" data-id="497fe0ec-d4e8-48f0-9a08-bd77dd750b75" data-node-type="media" data-renderer-start-pos="402" data-type="file" data-width="1280"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-282%3A-example--1" role="none"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="82.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/6ad22819-8c81-44f3-a13c-dae48ae870e5#media-blob-url=true&id=497fe0ec-d4e8-48f0-9a08-bd77dd750b75&collection=contentId-493110&contextId=493110&width=1280&height=723&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 282: Example of generic System elements**</div><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper"></div></div></div></div></div></div>![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/kpOTAuBu9CCT80cD-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-19sripf" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="453" data-vc="media-single" data-width="708" data-width-type="pixel" id="bkmrk-figure-283%3A-example-"><div class="css-1szupxi"><div data-alt="" data-collection="contentId-493110" data-context-id="493110" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="723" data-id="2d3bbfe4-e26d-4a8e-bbac-dfdaecbdd32d" data-node-type="media" data-renderer-start-pos="454" data-type="file" data-width="1280"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-283%3A-example--1" role="none"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="83.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/f06e5091-e70e-4a19-acfa-15e9cdb4ec15#media-blob-url=true&id=2d3bbfe4-e26d-4a8e-bbac-dfdaecbdd32d&collection=contentId-493110&contextId=493110&width=1280&height=723&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 283: Example of CDMA UL System elements**</div></div></div></div></div></div>When adding a new system, enter the name (unique identifier) and a description.

**Note:** It is also possible to create a system from the workspace and export it to a local library.