# 8.8.1 CDMA Uplink capacity finding

In <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">CDMA</span></span></span> uplink, the capacity is found by gradually filling system with users until a certain average noise rise with the specified threshold noise rise is reached. The Noise rise is measured as the linear average of dB values – across all 19/57 base-stations. After every trial SEAMCAT calculates the average noise rise over the total number of trials and if this value is above the threshold restarts the simulation with a lower value of users per cell.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/mwMnjQ2H23lJ63n2-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/mwMnjQ2H23lJ63n2-image.png)

**Figure 197: Uplink non-interfered capacity finding**

**Table 32: Elements of the uplink non-interfered capacity finding screen**

<div class="pm-table-container with-shadow-observer" data-layout="align-start" data-testid="table-container" id="bkmrk-id-description-1-thi"><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"><table data-layout="align-start" data-number-column="false" data-table-width="760" data-testid="renderer-table" style="width: 100%;"><colgroup></colgroup><tbody><tr><td colspan="1" rowspan="1" style="width: 10.1353%;">**ID**

</td><td colspan="1" rowspan="1" style="width: 89.8409%;">**Description**

</td></tr><tr><td colspan="1" rowspan="1" style="width: 10.1353%;">**1**

</td><td colspan="1" rowspan="1" style="width: 89.8409%;">This dial indicates the number of trials completed with the current capacity. This dial will range from 0 to the number of trials entered as value “4” on Figure 191.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 10.1353%;">**2**

</td><td colspan="1" rowspan="1" style="width: 89.8409%;">This dial indicates the current number of users being tested. Range is dynamic and the dial is mainly intended as an easy visual indicator of values being tested.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 10.1353%;">**3 <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">UL</span></span></span>**

</td><td colspan="1" rowspan="1" style="width: 89.8409%;">The needle shows the current value of average noise rise across the trials run. The red area indicates the noise rise is too low (too few users in the system) – the green area is the target noise rise (plus/minus) the tolerance specified. The yellow area indicates the average noise rise is too high (too many users in the system).

</td></tr><tr><td colspan="1" rowspan="1" style="width: 10.1353%;">**4 <span data-highlighted="true" data-vc="highlighted-text">UL</span>**

</td><td colspan="1" rowspan="1" style="width: 89.8409%;">The bar chart gives information on previous values tested. The Y axis is the average noise rise and the X axis is the number of users per cell being tested.

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

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