Head Office
Markham, ON L3R 0H5, Canada
Description
AVQ1050 - ATSC 3.0 BPS Synchronizer and Receiver provides tools for selecting a signal component which can be used as a reference for the signal Bootstrap positioning in time, the Bootstrap Time of Arrival (TOA), and channel response estimations.
Additionally, the tool is used for TOA of the earliest significant multipath component detection for ATSC 3.0 signals.
The TOA Reference tool offers three methods of selection – by enabling an auto mode, by entering manually a known position of the TOA reference, or by using a mouse to select the desired position.
Available in Plots
Tool Overview
2 - Available tools selection
2 - Auto Reference Peak On/Off switch
3 - Set/Reset button
4 - Show/Hide CIR Deconvolution plot
5 - TOA Reference parameters
6 - List of detected peaks
Operation
Auto Reference Peak mode
Turn on Auto Reference Peak for the system to assigned the TOA Reference to the most significant multipath component found above the threshold. The multipath pattern on the CIR is constantly monitored for the changes in the peak’s amplitude and time dispersion. A new peak with the highest amplitude is automatically re-selected and used as the CIR and TOA reference every time the pattern changes that allows tracing dynamic changes in the multipath components.
When the Auto Reference Peak is activated, the TOA Reference marker and the first column in the TOA Reference values row are marked with the letter “A”. TOA Reference manual settings are disabled.
Manually selecting the TOA Reference position
Ensure that the Auto Reference Peak is turned off.
If the system has the TOA reference previously set (the Set/Reset button displays Reset), start with resetting the reference by clicking the Reset button. To initiate manual position selection, click Set. The top row section changes into edit mode and displays an input field to enter data. The counter starts and is displayed in the button. The crossbar adds a triangular pointer to assist with mouse selection. The user has 10 seconds to make the selection either by entering a numerical value in usec into the input field or by selecting the location with a presented pointer.
If the reference is selected, the toolbox changes to the Set mode – Set/Reset button displays RESET and the green row in the list of detected peaks will display calculated TOA reference if identified. The plot will display a pointer showing the position of the identified TOA reference.
The TOA Reference marker and the first column in the TOA Reference values row are marked with the letter “M”.