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8.2.2 General
You can enter the frequency. The frequency value is overwritten at the “Scenario” tab level. Table 26: General system panel Description Symbol Type Unit Comments Frequency f Distribution or Scalar MHz Distribution of the centre freq...
8.3 General settings
Introduction
The General settings tabsheet contains a range of CDMA system parameters as well as some parameters that depend on the modelled direction of CDMA link (uplink vs. downlink). 7 panels characterised the CDMA system. The below graphic represent the CDMA UL when a...
8.3.1 CDMA general settings
Table 27: CDMA general settings input parameters Description Symbol Type Unit Comments Receiver Noise Figure Scalar dB Equipment-specific noise figure of receiver. It is used to calculate the noise floor. See Section1.2.2 Hand...
8.3.2 Local environment
You can choose the suitable indoor and outdoor ratio for the mobile station to be used by the propagation model. Further details are presented in Section 5.4.3.
8.3.3 Receiver settings
This content of this panel depends whether CDMA system is a victim or an interfering system. If the CDMA is a victim, you will have to set the blocking mask. It is a shared interface with OFDMA. Figure 192: Cellular panel receiver settings Table 27: Receive...
8.3.4 Transmitter settings
This content of this panel depends whether CDMA system is a victim or an interfering system. If the CDMA is an interferer, you will have to set the spectrum emission mask and the emissions floor. It is a shared interface with OFDMA. Figure 190: Cellular pan...
8.3.5 CDMA uplink
This is only available if CDMA UL selected. Table 29: CDMA UL input parameters for the power control Description Symbol Type Unit Comments Target network noise rise Scalar dB Specific level of noise th...
8.3.6 CDMA downlink
This panel is available only if CDMA DL selected. Table 30: CDMA DL input parameters for the power control Description Symbol Type Unit Comments Success threshold Scalar dB Threshold to determine perfect link quality. Base St...
8.3.7 CDMA capacity
The capacity of the simulated system (i.e. how many mobiles per cell should be generated in the system) is dependent on all other settings and cannot always be easily deducted from these. Therefore SEAMCAT has a feature that allows for automatic determination ...
8.3.8 Propagation Model
You can choose the suitable propagation model to be applied when calculating signal loss along the transmitter and the receiver path. A choice and settings of propagation models are presented in ANNEX 17:.
8.4 Positioning
See section 7.5, common to CDMA and OFDMA on the positioning of BSs and MSs.
8.5 CDMA Link level data
8.5.1 CDMA link level system mapping
Power control is a crucial mechanism in CDMA mobile radio networks, which needs to be modeled in SEAMCAT. It is a complex process involving various layers of signaling, measurement and modulation/demodulation procedures. It is not feasible to model signaling, ...
8.5.2 CDMA DL Power Control Methodology (VOICE ONLY)
Figure 193 presents the dependency between the condition of a user in the network (the so called geometry), mobile speed and soft handover state of the UE that are needed to map a particular link quality to the channel power requirement. Figure 193: Po...
8.5.3 CDMA uplink Power Control Methodology in SEAMCAT (VOICE ONLY)
Performance characteristics of individual links to be used in the power control module of SEAMCAT are generated a priori from link level simulations. This usually includes several mappings between requested link quality (e.g. block error rate, BLER) and requir...
8.6 CDMA Downlink - simulation algorithm
8.6.1 Simulation Methodology
The main goal of the downlink power control in SEAMCAT is to calculate the total BS output power and the success rate (% of calls with no link quality degradation) for a given snapshot of the system. BS output power is a key parameter in the scenarios where CD...