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Figure 434439: Downlink system details – see Table 7374Anchor F434F439F434 F439
Table 7374: Downlink system detailsAnchor T073T074T073 T074
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Name | Description |
Link direction | Link direction of the CDMA network |
Frequency | Carrier frequency of the CDMA network |
Bandwidth | Bandwidth of the system |
Cell Radius | The cell radius of the CDMA network is based on 3GPP2 and is equivalent to R in the graphic below. |
Bitrate | Bit rate of the system. It is used to calculate the system processing gain |
Link Level Data | Used to map the link level simulation (bit level) to the system level simulation (SIR level) |
Total non interfered capacity | Same value as shown in the Snapshot summary. |
Non interfered capacity per cell | Number of active UEs when the CDMA network is balanced. Note: This is the result of the optimal capacity finding simulation – and the value to extract and input to reuse the result. |
Number of trials during capacity test | The number of trials input parameter |
Obtained success rate | The result of optimal capacity finding for the capacity used. This can be different than the target (0.8 for downlink and target noise rise for uplink) if the algorithm has detected narrow oscillation (back and forth between the same values). Please refer to the CDMA specification for more details on this algorithm. |
Number of ignored users (due to LLD) | Link level values are extrapolated from the values input and there is a build in hard coded stop if a UE is requiring more than half of received signal to be the wanted signal. Any UEs requiring more than this limit is automatically dropped. This number counts the number of UEs in this snapshot dropped due to this limit. |
Total dropped users | Total number of dropped UEs (both due internal and external interference) |
Users dropped before interference | Number of UEs dropped by power balance before the introduction of external interference. Along with the total number of dropped UEs this gives insight into the impact of external interference compared to the internal interference. |
Number of ignored users (due to LLD) | Duplicate – will be removed. |
Propagation model | The name of the selected propagation model for the system. |
Maximum traffic channel proportion | This is the maximum transmit power for a single traffic channel (UE) – deducted from the maximum transmit power for the base stations and the specified maximum traffic channel fraction. |
Noise floor | Calculated value of the Noise Floor |
Percentage of active users in soft-handover | Linear percentage of voice active UEs who are in soft-handover. This is very dependent on the selected propagation model. |
Percentage of dropped users in soft-handover | Linear percentage of dropped UEs in soft-handover. |