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Channel fading, Channel simulator, Awgn – DekTec DTC-378 T2Xpress User Manual

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DTC-378 T2Xpress Manual

Essential Tools for Digital-TV Professionals

February 2015

DTC-378 T2Xpress

If the Enable box is checked, the transmitter signature using the FEF part is enabled and the

signature information can be specified.

- ID1

Identification sent during the first signature period

- ID2

Identification sent during the second signature period

7.13. Channel Fading
The channel-fading tab allows you to specify the parameters for the channel simulator:

- White noise

- Reflections (multipath echo’s)

- Doppler effects because of a moving receiver

If MISO is used, the number of channel-simulation parameter sets you can specify depends on the

selected MISO mode:

- For modes Tx1 and Tx2, the parameters for a single fading path can be set

- If “Both Tx1 and Tx2” or “Tx1+Tx2” is specified, two independent parameter sets can be

specified: One for Tx1, the other for Tx2

Note: If the mode “Tx1+Tx2” is selected, only one AWGN noise source can be specified, that is

added to the summed signal.

7.13.1. Channel Simulator
The Channel-Simulator group contains the overall enable box.

If checked, channel simulation is enabled and noise and fading-path parameters can be specified. If

unchecked, no channel simulation is applied.

The File Open button

enables you to load a previously saved set of channel-simulation settings.

The File Save button

allows you to save the current settings.

7.13.2. AWGN
The AWGN group enables you to specify parameters for the addition of Gaussian-distributed noise

to the I/Q samples. If the Enable box is checked, the Signal-To-Noise ratio relative to the original

signal can be specified.

AWGN parameters