8 CDMA module
8.1 Introduction
SEAMCAT allows the simulation of cellular networks employing Code Division Multiple Access modula...
8.2 CDMA system tab
Introduction
Whether you want to simulate CDMA UL (uplink) or CDMA DL (downlink), you can import from the syst...
8.2.1 System
You can name and write some description of the CDMA system you want to simulate. It is the same l...
8.2.2 General
You can enter the frequency. The frequency value is overwritten at the “Scenario” tab level. Tab...
8.3 General settings
Introduction
The General settings tabsheet contains a range of CDMA system parameters as well as some paramete...
8.3.1 CDMA general settings
Table 27: CDMA general settings input parameters Description Symbol Type Unit Comm...
8.3.2 Local environment
You can choose the suitable indoor and outdoor ratio for the mobile station to be used by the pro...
8.3.3 Receiver settings
This content of this panel depends whether CDMA system is a victim or an interfering system. If t...
8.3.4 Transmitter settings
This content of this panel depends whether CDMA system is a victim or an interfering system. If ...
8.3.5 CDMA uplink
This is only available if CDMA UL selected. Table 29: CDMA UL input parameters for the...
8.3.6 CDMA downlink
This panel is available only if CDMA DL selected. Table 30: CDMA DL input parameters for the po...
8.3.7 CDMA capacity
The capacity of the simulated system (i.e. how many mobiles per cell should be generated in the s...
8.3.8 Propagation Model
You can choose the suitable propagation model to be applied when calculating signal loss along th...
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 ...
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 ...
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...
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 ...
8.6.2 Traffic Generation
While the BS output power and the outage ratio is likely to be calculated for a single CDMA cell,...
8.6.3 Soft Handover
A user may simultaneously be connected to multiple BS’s in CDMA based systems (soft handover). Si...
8.6.4 Power Control
As far as SEAMCAT is concerned, the actual CDMA power control algorithm looks merely like a black...
8.6.5 Success rate
The power control loop terminates when every BS broadcast power converges and traffic channel pow...
8.7 CDMA Uplink - simulation algorithm
The center cell site only is used to calculate the effects of interference. In spite of this fact...
8.7.1 Power Control
In CDMA networks, closed-loop fast tra...
8.7.2 Soft and Softer Handover
The handover model proposed is a simplified soft handover. We assume that all base stations trans...
8.7.3 Voice Activity Factor
The voice activity factor is the measure of how long the non-silence period is to the overall tim...
8.7.4 System loading
The following procedures can be used for system loading during simulation and preparation of simu...
8.7.5 Outage calculation
Two conditions are counted as outage. A mobile station, which is not able to transmit the requi...
8.7.6 CDMA UL cell selection
For the CDMA UL, there are two algorithms selectable in SEAMCAT: Recommended algorithm when the i...
8.8 Capacity for CDMA system
When starting a simulation involving one or more CDMA systems SEAMCAT will begin by checking if a...