Because you may be designing a system where different types of CPEs are used (different power levels or antenna types, for example), EDX SignalPro provides a selection of CPE types from which to choose when you create a new CPE. There are several ways to edit the CPE Types: click the Edit CPE button in the Edit CPE Group dialog box, select RF Systems>CPE Types from the main menu bar or select Edit CPE Types from the drop-down menu to the right of the New CPE button  in the toolbar menu.

Each CPE Type can be edited in this dialog by selecting the tab at the top of the dialog that is associated with the desired CPE Type. Existing CPE Types can be deleted by selecting the “-” icon at the right and new CPE Types can be added by selecting the “+” icon at the right.

Using the CPE Type Name field, each CPE Type can have a user-specified name (the manufacturer’s model number for that CPE, for example) as well as the following information which is common to all CPEs of that type:

Antenna Height Above Location

The field references the antenna height when a new CPE of this type is created and whether the antenna height is defined as above ground level (AGL) or Above Mean Sea Level (AMSL). Once created, each CPE’s antenna height can be edited and uniquely specified.

Location Elevation Reference

How the CPE is placed in regards to terrain and/or building databases.

Antenna Pattern Filename/Antenna Gain

The antenna pattern and gain associated with the CPE. If no antenna pattern file is specified, the “Omni/isotropic” option can be chosen for the antenna file.

Cross‐polarization Rejection

Of the antenna. If dual-polarization or polarization diversity are used, this value would be 0.

Maximum/Minimum Power Output

The minimum RF output power value is only relevant if uplink power control is used.

The transmission system losses

This is the sum of all losses between the output connector of the CPE transceiver and the antenna connector. CPE’s with combined transceivers and antennas in one unit have 0 dB of transmission system losses (no cable between the transceiver and antenna).

Link Template To Use For Path Profile

This is the description of the link study parameters to be used when displaying the link study results between a CPE of this type and a hub/AP transmitter sector. This is accessed by clicking the drop-down menu to the right of the New Link toolbar button and choosing Edit Templates or, by clicking on the Edit Link Templates button in the Edit Link Group dialog box.

Receiver

The receiver section in the lower right portion of the dialog box is for entering the details about the receiver itself. These include the required C/(I+N) ratio for acceptable signal reception, the required service threshold, the receiver noise and noise figure (if noise figure isn’t known or specified by the manufacturer, 5 dB is a reasonable default value), equivalent noise bandwidth, a filter file code value that can be used to described the shape and bandwidth of the received filter, an adjacent channel rejection value and a simulcast capture ratio range. These values are used for doing studies for error rate performance, percent service availability and C/(I+N) ratio. The CPE receive fields are identical to the those used by mobile/remote units and were discussed previously in the Mobile/Remote Unit.

Traffic

The traffic parameters for this CPE type are composed of the average downlink and uplink data rates and activity factors (percentage of on-air time) for CPEs of this type. The traffic associated with each CPE that is assigned to a hub/AP sector is summed from this data for their associated CPE type(s).