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DekTec To Highlight ATSC 3.0 Solutions At NAB 2017

DekTec will display and demonstrate its latest ATSC 3.0 ecosystem including test modulators, demodulators, and HEVC encoders and new 4K solutions at the 2017 NAB Show. Booth visitors can also pick up a copy of DecTec’s new ATSC 3.0 Primer.

DekTec will introduce the DTA-2174 HEVC encoder for PCI-express, which provides broadcast-quality encoding of up to 4Kp60 in a standard PC. The DTA-2174 PCIe card is perfectly suited for PC platform reception or playout of a 4K stream. The card has 4K Input/Output with Quad 3G-SDI bidirectional port.

DekTec will also display its VF-REC v3 solution for recording 4K baseband SDI using standard and affordable PC hardware. Click to enlarge.

DekTec will also display its VF-REC v3 solution for recording 4K baseband SDI using standard and affordable PC hardware. Click to enlarge.

ATSC 3.0 Toolset

As an active member of the ATSC 3.0 Validation & Verification group, DekTec is at the forefront of standard implementation and interoperability verification. This position has enabled DekTec to add virtually all features of the latest ATSC Physical Layer Protocol specification (A/322), including multi-PLP, multiple subframes, Layered Division Multiplexing (LDM) and Hybrid Time Interleaving (HTI) in the DekTec SDK.

The Multi-PLP Extensions, a subsystem of the DekTec SDK for creating multi-PLP modulators, has been extended with support for ATSC 3.0. A broadcaster's application only needs to pass modulation parameters and ATSC Link-layer Protocol (ALP) packets. The DekTec SDK handles packet scheduling, framing, FEC, interleaving and eventually waveform generation. This enables a broadcaster to build their own transmitter application without having to worry about the lower levels of the transmission.

The Advanced Demodulator API, another subsystem for receiving and analyzing RF modulated signals, has likewise been extended with ATSC 3.0. It uses the DTA-2131 universal VHF/UHF receiver card in combination with Software Defined Radio (SDR) technology. The user application can retrieve real-time information about the RF-signal, bootstrap- and layer-1 parameters. Multiple PLPs can be decoded simultaneously and passed to the user application as ALP packets.

Atsc3Xpress Analysis GUI displays a comprehensive overview of signaling data and outputs the demodulated stream over IP. Click to enlarge.

Atsc3Xpress Analysis GUI displays a comprehensive overview of signaling data and outputs the demodulated stream over IP. Click to enlarge.

DekTec’s ATSC 3.0 applications

Atsc3Xpress is the test-signal generator for ATSC 3.0 transmission, receiver chip development, field trials and demonstrations. Its GUI allows full control over all ATSC 3.0 parameters. It supports playout from a built-in PRBS generator, IP-capture file (PCAP) and live IP-input carrying ROUTE/MMT packets. The DTC-305 option can be added to inject white noise and simulate reflections (multi-path fading).

Atsc3Xpert is DekTec's ATSC 3.0 receiver and analyzer. Its GUI provides a real-time overview of the RF measurements and ATSC 3.0 signaling parameters. It includes graphical representations of LDPC iterations, transfer functions, impulse response, and constellation. The demodulated stream can be captured to file or forwarded on IP.

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