# 13.4 Library elements

# 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.

# 13.4.2 Spectrum emission mask elements

To create or modify a library element containing parameters of a particular spectrum mask, select the **Spectrum emission masks** command from the **Library pull-down menu** or directly with **CTRL+SHIFT+S**.

A list of existing pre-defined spectrum emission mask will be selectable as shown in the figure below. This is an example of a LTE UE (Table 6.6.3.1-2 of 3GPP TS 36.101) where the limit for the spurious emission domain (outside ± 12.5 MHz) applies to frequencies above 1000 MHz:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/iYSbuIc3AJjxA3E7-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-rzxfa" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="481" data-vc="media-single" data-width="642" data-width-type="pixel" id="bkmrk-figure-284%3A-spectrum"><div class="css-s79v8j"><div data-alt="" data-collection="contentId-493102" data-context-id="493102" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="588" data-id="c99b2997-23f0-4500-b32a-b5e614c67eb6" data-node-type="media" data-renderer-start-pos="482" data-type="file" data-width="945"><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-284%3A-spectrum-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="84.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/536d96e9-1d49-41d5-9711-0cdcdfdbfc9f#media-blob-url=true&id=c99b2997-23f0-4500-b32a-b5e614c67eb6&collection=contentId-493102&contextId=493102&width=945&height=588&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 284: Spectrum emission mask library elements**</div></div></div></div></div></div>When adding a new spectrum emission mask, enter the name (unique identifier) and description of its technical parameters.

**<span class="fabric-text-color-mark" data-renderer-mark="true" data-text-custom-color="#000000">Note 1:</span>**<span class="fabric-text-color-mark" data-renderer-mark="true" data-text-custom-color="#000000"> It is possible to quickly scroll up and down and see the differences in the masks. </span>

**<span class="fabric-text-color-mark" data-renderer-mark="true" data-text-custom-color="#000000">Note 2:</span>**<span class="fabric-text-color-mark" data-renderer-mark="true" data-text-custom-color="#000000"> It is possible to create a mask from the workspace and export it to your library environment </span>

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/3dRCl5yzSfJcloZB-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-1cjzudg" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="861" data-vc="media-single" data-width="465" data-width-type="pixel" id="bkmrk-figure-285%3A-example-"><div class="css-1426qqv"><div data-alt="" data-collection="contentId-493102" data-context-id="493102" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="108" data-id="70d48900-2a60-474c-b40f-7220c8978624" data-node-type="media" data-renderer-start-pos="862" data-type="file" data-width="465"><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-285%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="85.gif" 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/23c64bfd-f0ce-442e-b46a-af312b565130#media-blob-url=true&id=70d48900-2a60-474c-b40f-7220c8978624&collection=contentId-493102&contextId=493102&width=465&height=108&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 285: Example on how to import/export to/from the workspace/library for the spectrum emission mask**</div></div></div></div></div></div>

# 13.4.3 Receiver blocking mask elements

To create or modify a library element containing parameters of a particular blocking mask, select the **Receiver blocking masks** command from the **Library pull-down menu** or directly with **CTRL+SHIFT+B**.

A list of existing pre-defined receiver blocking mask will be selectable as shown in the figure below:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/02j9KJDoqO09x4AN-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-rzxfa" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="307" data-vc="media-single" data-width="642" data-width-type="pixel" id="bkmrk-figure-286%3A-receiver"><div class="css-yzxvlq"><div data-alt="" data-collection="contentId-493106" data-context-id="493106" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="499" data-id="3ce76513-29a0-4bcb-9828-db776f13c12d" data-node-type="media" data-renderer-start-pos="308" data-type="file" data-width="801"><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-286%3A-receiver-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="86.gif" 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/fdfa661c-d29f-4d16-979b-b6c2fcd23cab#media-blob-url=true&id=3ce76513-29a0-4bcb-9828-db776f13c12d&collection=contentId-493106&contextId=493106&width=801&height=499&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 286: Receiver blocking mask library elements**</div><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper"></div></div></div></div></div></div>When adding a new receiver blocking mask, you need to enter the name (unique identifier) and description of its technical parameters .

**Note 1:** It is possible to quickly scroll up and down and see the differences in the blocking masks.

**Note 2:** It is possible to create a blocking mask from the workspace and export it to your library environment.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/A5Vu7khfPJoLZRAO-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-06/A5Vu7khfPJoLZRAO-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-8fuvb8" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="713" data-vc="media-single" data-width="475" data-width-type="pixel" id="bkmrk-figure-287%3A-example-"><div class="css-1lkepab"><div data-alt="" data-collection="contentId-493106" data-context-id="493106" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="117" data-id="87efcb94-4a91-4af5-acb0-245da6665dcd" data-node-type="media" data-renderer-start-pos="714" data-type="file" data-width="475"><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-287%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="87.gif" 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/d5fcf662-3487-4e9a-b547-be236c4746b7#media-blob-url=true&id=87efcb94-4a91-4af5-acb0-245da6665dcd&collection=contentId-493106&contextId=493106&width=475&height=117&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 287: Example on how to import/export to/from the workspace/library for the receiver blocking mask**</div></div></div></div></div></div>

# 13.4.4 Receiver elements

To create or modify a library receiver element, select the **Receivers** command from the **Library pull-down menu** or directly with **CTRL+SHIFT+R**.

This activates the Receiver Library window which displays a list of existing receiver elements in the library. Please note that it is the same interface as in the workspace, so that it is easy to fill. If no receiver has been previously created , the list will contain only the DEFAULT receiver elements:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/USOeApjQIGLFa5WP-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-g5bla6" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="450" data-vc="media-single" data-width="844" data-width-type="pixel" id="bkmrk-figure-288%3A-receiver"><div class="css-13ztf7b"><div data-alt="" data-collection="contentId-493122" data-context-id="493122" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="600" data-id="22ed2414-1e65-4ca9-88fd-adca950f33b4" data-node-type="media" data-renderer-start-pos="451" data-type="file" data-width="1266"><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-288%3A-receiver-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="8.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/e4bf2365-421c-43b1-b9ea-35e5a7e1a24c#media-blob-url=true&id=22ed2414-1e65-4ca9-88fd-adca950f33b4&collection=contentId-493122&contextId=493122&width=1266&height=600&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 288: Receiver library elements**</div></div></div></div></div></div>The parameters of receiver are grouped in 5 different panels:

- **Receiver identification**: to define receiver name (unique identifier), description;
- **Antenna pointing**: It contains all information relative to the antenna other than the radiation pattern (Please read here more about antenna azimuth/elevation settings);
- **Antenna patterns identification**: to define a specific antenna to be associated with that particular receiver. Note that is possible to select one of the existing antenna library elements or define completely new antenna parameters to be associated only with the given receiver;
- **Reception characteristics**: to define the basic receiver features, such as bandwidth, sensitivity, blocking (selectivity) function, etc.;
- **Interference criterion**: to define the required minimum C/I and/or other interference criterion, as appropriate.

**Note 1:** It is possible to scroll up and down and see the differences in the receivers.

**Note 2:** It is possible to create a receiver from the workspace and export it to your library environment

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/gn77mtHddUiuDkxf-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-1tl8lct" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="1549" data-vc="media-single" data-width="337" data-width-type="pixel" id="bkmrk-figure-289%3A-example-"><div class="css-jmc7sj"><div data-alt="" data-collection="contentId-493122" data-context-id="493122" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="177" data-id="d41f2d51-1764-4b99-aaad-f12e556f0ce2" data-node-type="media" data-renderer-start-pos="1550" data-type="file" data-width="337"><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-289%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="9.gif" 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/421eb4ff-9ba1-4b2d-ad9f-0d4b873aa0a3#media-blob-url=true&id=d41f2d51-1764-4b99-aaad-f12e556f0ce2&collection=contentId-493122&contextId=493122&width=337&height=177&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 289: Example on how to import/export to/from the workspace/library for the receiver elements**</div></div></div></div></div></div>

# 13.4.5 Transmitter elements

To create or modify a library transmitter element, select the **Transmitters** command from the **Library pull-down menu**or directly with **CTRL+SHIFT+T**.

This activates the Transmitter Library window which displays a list of existing transmitter elements in the library. Please note that it is the same interface as in the workspace so that it is easy to fill. If you no transmitter has been previously created the list will contain only the DEFAULT transmitter elements:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/Aly5qQfbTTULeky0-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-18cs7ql" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="467" data-vc="media-single" data-width="839" data-width-type="pixel" id="bkmrk-figure-290%3A-transmit"><div class="css-ti7e32"><div data-alt="" data-collection="contentId-493126" data-context-id="493126" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="600" data-id="eb318e23-cbb0-4d6b-b47a-e499e9619404" data-node-type="media" data-renderer-start-pos="468" data-type="file" data-width="1259"><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-290%3A-transmit-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="0.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/feae21f7-cfaa-43c7-a008-49d091cfd58a#media-blob-url=true&id=eb318e23-cbb0-4d6b-b47a-e499e9619404&collection=contentId-493126&contextId=493126&width=1259&height=600&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 290: Transmitter library elements**</div></div></div></div></div></div>The parameters of transmitter are grouped in 4 different panels:

- **Transmitter identification**: to define name (unique identifier), description;
- **Antenna pointing**: It contains all information relative to the antenna other than the radiation pattern;
- **Antenna patterns identification**: to define a specific antenna to be associated with that particular receiver. Note that you can select one of the existing antenna library elements or define completely new antenna parameters to be associated only with the given receiver;
- **Emission characteristics**: to define the basic transmission features, such as power, spectrum emission mask function, etc..

**Note 1:** It is possible to quickly scroll up and down and see the differences in the transmitters.

**Note 2:** It is possible to create a transmitter from the workspace and export it to your library environment

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/y14WduAiv3rX3yBo-image.png)![](blob:https://ecowiki.atlassian.net/5a05917d-f845-487b-944b-0aafc74d822a#media-blob-url=true&id=cf93532c-bba2-4ded-92dc-2e2572655acb&collection=contentId-493126&contextId=493126&width=337&height=197&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 291: Example on how to import/export to/from the workspace/library for the transmitter elements**

# 13.4.6 CDMA Link level data

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:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/5ibyyppZqVafbgCg-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-xcxwme" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="250" data-vc="media-single" data-width="637" data-width-type="pixel" id="bkmrk-figure-292%3A-cdma-lin"><div class="css-1kzp9g0"><div data-alt="" data-collection="contentId-493114" data-context-id="493114" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="501" data-id="10ae4510-161c-463d-bab9-ae4848eb7d86" data-node-type="media" data-renderer-start-pos="251" data-type="file" data-width="799"><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-292%3A-cdma-lin-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="2.gif" 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/09a193a7-701c-4a06-a94d-90082d09fa8d#media-blob-url=true&id=10ae4510-161c-463d-bab9-ae4848eb7d86&collection=contentId-493114&contextId=493114&width=799&height=501&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 292: CDMA Link level data library elements**</div></div></div></div></div></div>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. Any additional link level data may be defined 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 considerations should be kept in mind before creating new Link level data:

<div class="ak-renderer-extension   " data-layout="default" data-node-type="extension" data-testid="extension--wrapper" data-top-level="true" id="bkmrk-the-seamcat-cdma-lin"><div class="ak-renderer-extension-inner-wrapper ak-renderer-extension-overflow-container css-v54qrt"><div class="_1t4wglyw _1syfglyw _1pnoidpf _1gocidpf"><div class="ak-renderer-wrapper is-max css-pw7jst"><div>  
</div><div class="css-1cmhusk" role="none"><div class="ak-renderer-document">- - 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**;
    - 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).

</div></div></div></div></div></div>From the worskpace, select the relevant library item as shown below:

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/MwVbTbv0pChXDCIV-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-er4axk" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="933" data-vc="media-single" data-width="665" data-width-type="pixel" id="bkmrk-figure-293%3A-example-"><div class="css-1te9y74"><div data-alt="" data-collection="contentId-493114" data-context-id="493114" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="371" data-id="73956a4c-6bac-4033-a49f-54efe44448bf" data-node-type="media" data-renderer-start-pos="934" data-type="file" data-width="617"><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-293%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="3.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/2d74126f-a697-4deb-979c-415804508211#media-blob-url=true&id=73956a4c-6bac-4033-a49f-54efe44448bf&collection=contentId-493114&contextId=493114&width=617&height=371&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 293: Example on how to import/export to/from the workspace/library for the CDMA Link Level data library elements**</div></div></div></div></div></div>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.*

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-06/scaled-1680-/vwzzWRh1HT5Lu983-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-ss2ic" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="1727" data-vc="media-single" data-width="533" data-width-type="pixel" id="bkmrk-figure-294%3A-example-"><div class="css-1a59ukh"><div data-alt="" data-collection="contentId-493114" data-context-id="493114" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="600" data-id="743ddade-a6f0-483d-8bd2-e792be1989f1" data-node-type="media" data-renderer-start-pos="1728" data-type="file" data-width="800"><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-294%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="4.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/a4259f39-bfa0-440a-b2da-7db0946a8646#media-blob-url=true&id=743ddade-a6f0-483d-8bd2-e792be1989f1&collection=contentId-493114&contextId=493114&width=800&height=600&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 294: Example on how to edit a CDMA Link Level data element**</div></div></div></div></div></div>