Manifestación de los Criterios y Estándares de la CNA en los formularios

Use Single Value—choose this option to define the spectral efficiency of a MCS by a single value of useful bit per symbol. The useful bit per

symbol is the information bits carried by a modulated symbol after the channel coding. For example, a MCS that uses a combination of 64-QAM modulation and a 2/3 coding rate offers a spectral efficiency of 4 useful bits per symbol.

Use Curve—choose this option to define the spectral efficiency of a MCS using a useful bits per symbol to CINR curve. The curve represents the variation of spectral efficiency under different channel qualities.

Downlink

Properly configuring the modulation for both the uplink and downlink plays an important role in predicting performance in your wireless network. The modulation parameters are used to define the required C/(N+I) (and ultimately the threshold), the interference susceptibility, and the spectral efficiency. Any system using adaptive (dynamic)

modulation will also require that each supported modulation be defined.

Name—type in this field a name for the modulation and coding scheme.

Useful Bits Per Symbol—type in this field the spectral efficiency for the modulation. When you generate analyses, this value is used to

determine the maximum achievable data rate when the modulation and coding scheme is available. This option is only available when you choose the Use Single Value option.

Required C/(N+I)—type in this field the required minimum signal to interference level to achieve the modulation. This value is computed as a function of the Required Eb/No and vice-versa. Changing this value

automatically updates the Required Eb/No value accordingly. It is used to determine whether a modulation scheme is available to a CPE at any given location, according to the C/(N+I) level at that location. This option is only available when you choose the Use Single Value option.

Amplifier Backoff—type in this field the amount by which power is reduced when this modulation is used. Typically, the higher the spectral

efficiency of a modulation, the greater the amplifier backoff you should assign.

This value is used whenever the modulation type is applied in the generation of analyses.

Mobile Speed—choose from this list the mobile speed to associate with the modulation. You define mobile speeds in the Project Settings dialog box.

Curve—displays the name of the curve file. This column is only available when you choose the Use Curve option.

Browse(...)—click this button to select a curve (.mcs) file. This column is only available when you choose the Use Curve option.

Edit Curve—click this button to open the Curve Editor where you can edit curve files. This column is only available when you choose the Use Curve option.

Add—click this button to add a new modulation to the table. This column is only available when you choose the Use Curve option.

Remove—click this button to remove the selected modulation from the table.

This column is only available when you choose the Use Curve option.

Uplink

Properly configuring the modulation for both the uplink and downlink plays an important role in predicting performance in your wireless network. The

modulation parameters are used to define the required C/(N+I) (and ultimately the threshold), the interference susceptibility, and the spectral efficiency. Any system using adaptive (dynamic) modulation will also require that each supported modulation be defined.

Name—type in this field a name for the modulation and coding scheme.

Useful Bits Per Symbol—type in this field the spectral efficiency for the modulation. When you generate analyses, this value is used to determine the maximum achievable data rate when the modulation and coding scheme is available. This option is only available when you choose the Use Single Value option.

Required C/(N+I)—type in this field the required minimum signal to interference level to achieve the modulation. It is used to determine whether a modulation scheme is available to a CPE at any given location, according to the C/(N+I) level at that location. This option is only

available when you choose the Use Single Value option.

Mobile Speed—choose from this list the mobile speed to associate with the modulation. You define mobile speeds in the Project Settings dialog box.

Curve—displays the name of the curve file. This column is only available when you choose the Use Curve option.

Browse(...)—click this button to select a curve (.mcs) file. This column is only available when you choose the Use Curve option.

Edit Curve—click this button to open the Curve Editor where you can edit curve files. This column is only available when you choose the Use Curve option.

Add—click this button to add a new modulation to the table.

Remove—click this button to remove the selected modulation from the table.

Network Settings

Use the Network Settings dialog box to indicate which technologies you have in your network and to define settings and allocate spectrum for each

technology. It provides

n tree representation of technologies and spectrum

n easy access to network settings

n right-click access to relevant commands

For more information about working with network settings, see the User Guide for the technology you are using.

Frame Setup

OFDM

This section displays the FFT size and Sampling frequency associated with a carrier bandwidth supported by LTE technology. For other OFDM based technologies (e.g., WiMAX TDD), the two parameters are used to compute subcarrier spacing. For LTE, the subcarrier spacing is fixed at 15KHz.

Use Interference Coordination—enable this check box to specify that the network implements inter-cell interference coordination techniques.

FTT Size—displays the FTT sized used by the frame.

Sampling Frequency—displays the sampling frequency for the channel bandwidth.