# 12.4.2 WSD frequency

This vector represents the actual selected frequency (MHz) at which the WSDs are allowed to transmit as the result of the spectrum sensing algorithm.

<div class="pm-table-container with-shadow-observer" data-layout="align-start" data-testid="table-container" id="bkmrk-%28a%29-%28b%29"><div class="css-bewlyc"><div class="fixed-table-div-custom-table-resizing css-7xlaiv" data-testid="sticky-table-fixed" mode="pin-bottom"></div></div><div class="pm-table-wrapper" data-autosize="false" data-layout="align-start" data-number-column="false" data-table-local-id="" data-vc="table-node-wrapper"><div class="sentinel-left"></div><table data-layout="align-start" data-number-column="false" data-table-width="760" data-testid="renderer-table"><colgroup></colgroup><tbody><tr><th aria-sort="none" class="ak-renderer-tableHeader-sortable-column__wrapper" colspan="1" rowspan="1">[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/tfnszcklP0oh8rzn-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/tfnszcklP0oh8rzn-image.png)

<div class="ak-renderer-tableHeader-sortable-column"><div class="rich-media-item mediaSingleView-content-wrap image-align-start css-i5keov" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="158" data-vc="media-single" data-width="442" data-width-type="pixel"><div class="css-1w5mwbw"><div data-alt="" data-collection="contentId-492960" data-context-id="492960" data-file-mime-type="image/png" data-file-name="4a.png" data-file-size="295757" data-height="552" data-id="56bfa61c-f7e7-43be-8711-89c04ade81e1" data-node-type="media" data-renderer-start-pos="159" data-type="file" data-width="978"><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-"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="4a.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" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/bd35fd03-5815-4e8a-a990-e5c817af3c98#media-blob-url=true&id=56bfa61c-f7e7-43be-8711-89c04ade81e1&collection=contentId-492960&contextId=492960&width=978&height=552&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)</div></div></div></div></div></div><figure class="ak-renderer-tableHeader-sorting-icon__wrapper ak-renderer-tableHeader-sorting-icon__no-order"><div role="presentation"><div aria-disabled="false" aria-hidden="false" aria-label="No sort applied to the column" class="ak-renderer-tableHeader-sorting-icon css-7smbrx" role="button" tabindex="0"><div class="sorting-icon-svg__no_order ak-renderer-tableHeader-sorting-icon-inactive css-1asrlx7">  
</div></div></div></figure></div></th><th aria-sort="none" class="ak-renderer-tableHeader-sortable-column__wrapper" colspan="1" rowspan="1"><div class="ak-renderer-tableHeader-sortable-column"><div class="rich-media-item mediaSingleView-content-wrap image-align-start css-vjhc93" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="163" data-vc="media-single" data-width="405" data-width-type="pixel"><div class="css-1gse2m7"><div data-alt="" data-collection="contentId-492960" data-context-id="492960" data-file-mime-type="image/png" data-file-name="4b.png" data-file-size="48629" data-height="536" data-id="52f4889e-21b9-46a1-aebf-0bc61bbf2cc1" data-node-type="media" data-renderer-start-pos="164" data-type="file" data-width="870"><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--1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="4b.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"></div></div></div></div></div><figure class="ak-renderer-tableHeader-sorting-icon__wrapper ak-renderer-tableHeader-sorting-icon__no-order">[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/xyGF96aBMg8KsY8b-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/xyGF96aBMg8KsY8b-image.png)

<div role="presentation"><div aria-disabled="false" aria-hidden="false" aria-label="No sort applied to the column" class="ak-renderer-tableHeader-sorting-icon css-7smbrx" role="button" tabindex="0"><div class="sorting-icon-svg__no_order ak-renderer-tableHeader-sorting-icon-inactive css-1asrlx7">  
</div></div></div></figure></div></th></tr><tr><td class="align-center" colspan="1" rowspan="1">**(a)**

</td><td class="align-center" colspan="1" rowspan="1">**(b)**

</td></tr></tbody></table>

</div><div class="pm-table-sticky-scrollbar-container-view-page" data-vc="table-sticky-scrollbar-container"></div></div><div class="fabric-editor-block-mark fabric-editor-alignment align-center" data-align="center" id="bkmrk-figure-254%3A-frequenc">**Figure 254: Frequencies where the WSDs are transmitting as (a) vector display and (b) <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">CDF</span></span></span>**</div>[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/Skkt4W8OSWqEmkI0-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/Skkt4W8OSWqEmkI0-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-1eg2hv5" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="279" data-vc="media-single" data-width="402" data-width-type="pixel" id="bkmrk-figure-255%3A-density-"><div class="css-1wgl7za"><div data-alt="" data-collection="contentId-492960" data-context-id="492960" data-file-mime-type="image/png" data-file-name="5.png" data-file-size="36066" data-height="530" data-id="7f909f97-5d37-495a-8cfc-933f17e571b5" data-node-type="media" data-renderer-start-pos="280" data-type="file" data-width="854"><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-255%3A-density--1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="5.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/f6c324f3-482a-46b2-a783-e29e072a4307#media-blob-url=true&id=7f909f97-5d37-495a-8cfc-933f17e571b5&collection=contentId-492960&contextId=492960&width=854&height=530&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)**Figure 255: Density of the frequencies used by the WSDs**</div></div></div></div></div></div>