Maxiva™ ATSC Spectrum Restorer

Regenerative ATSC gap filler/on-channel repeater (EDOCR) with SFN capability

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OVERVIEW

GatesAir’s new Maxiva™ ATSC Spectrum Restorer provides the capability to add an on-channel SFN gap-filler to an existing ATSC/8-VSB transmission system. The Equalized Digital On-Channel Repeater (EDOCR) technology coupled with a highly-effective echo-cancellation system provides unparalleled performance. This unique design from Gates Air incorporates extremely fast signal demodulation, error-correction and remodulation, to effectively maintain critical SFN timing, while providing top-quality SNR/MER performance.

The GatesAir ATSC Spectrum Restorer, provides an input sensitivity of -72dBm and an effective echo-cancellation of up to 40dB.

As well as preserving proper SFN synchronization, the Spectrum Restorer features excellent output MER, regardless of the input signal MER, thanks to its high-speed regenerative processing. This ensures the utmost flexibility in network design as well as optimum signal quality at any receive location – which may be served by a main transmitter or a remote EDOCR. The Spectrum Restorer features input sensitivity to -72dBm and effective Echo cancellation up to 40 dB.

The ATSC Spectrum Restorer is an option that can be added (at the time of order) to any of our Maxiva 1 RU Ultra-Compact Translator systems (15W to 150W) and comprises a replacement Modulator, RF input module and software.

Main Features of Maxiva™ ATSC Spectrum Restorer

Compact 1 RU 19” rack chassis
Power levels as per standard Maxiva™ Ultra-Compact series product range: 15W to 150W
High adjacent channel rejection
Low multi-hop noise/error accumulation provided by the Equalizer with Short Viterbi correction slicer
Input sensitivity to -72dBm and Echo Cancellation of up to 12dB over the main RF signal
4 μS pre-equalizer and 36 μS post-equalization for Multipath and ACI
Equipment latency ~24 μS with Linear pre-correction and pre-equalization, otherwise ~16 μS
Optional internal demodulator with equalizer for regenerative Translators
Linear pre-correction Adaptive Direct Learning FIR with 96 taps
Non-Linear Adaptive Pre-distortion module with “memory-effect” compensation for Doherty high-efficiency final PA stage
Includes SNMP, Web Interface and Touch Screen LCD display

Main Features of Maxiva™ ATSC Spectrum Restorer

Compact 1 RU 19” rack chassis
Power levels as per standard Maxiva™ Ultra-Compact series product range: 15W to 150W
High adjacent channel rejection
Low multi-hop noise/error accumulation provided by the Equalizer with Short Viterbi correction slicer
Input sensitivity to -72dBm and Echo Cancellation of up to 12dB over the main RF signal
4 μS pre-equalizer and 36 μS post-equalization for

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