RDMS™ Compact Receiver-Combiner

Key Features

• Complete Receiver – RF to Bits — A single-box solution that accepts RF signals and delivers baseband clock and data. No external add-ons required.
• Rugged, Space-Efficient Design — Ultra-compact 52 cubic-inch chassis affords flexibility with system integration.
• Space Time Coding (STC) with SOQPSK Mode — Space-Time Coding (STC) operates with Quasonix STC-enabled transmitters to eliminate the dropouts caused by transmit antenna pattern nulls due to inter-antenna interference.
• Low Density Parity Check (LDPC) with SOQPSK Mode — Low Density Parity Check coding operates with Quasonix LDPC-enabled transmitters to improve link margin by up to 9 dB, while still using 22% less bandwidth than PCM/FM at the same payload data rate; fully integrated forward error correction system.
• Data Quality Encapsulation (DQE)/Data Quality Metric (DQM) — Data Quality Encapsulation (DQE) is a process of bundling Data Quality Metric words with payload data, including a sync word to aid BSS time alignment; built-in real-time DQM display via the browser interface.
• Best-Channel Selector (BCS) — Combiner data output seamlessly selects the best channel (Ch1, Ch2, or Pre-Detection Diversity Combiner) based on DQM.
• Pre-Detection Multi-Mode Diversity Combiner — Provides Maximal Ratio Combining with gain virtually indistinguishable from theory. Also features a revolutionary dynamic time alignment function which increases the allowable time skew between channels by over 1300 nanoseconds.
• Built-in Integrated Three-channel Spectrum Analyzer — Spectrum analyzer shows frequency domain view for up to three channels simultaneously, via the browser interface.
• Modulation Index Tracking* for PCM/FM — Maintains superior BER performance even if the received signal’s modulation index varies by as much as 500%, a breakthrough for tracking legacy analog transmitters (*patented).
• Phase Noise Compensation — Optimizes demodulator performance for use with legacy TM packs and transmitters with excessive phase noise.
• Best SOQPSK-TG Detection in the Industry — RDMS’ trellis detection for SOQPSK-TG yields improvements of 2 dB or more over the competition’s single-symbol detectors.
• Easy Field Updates — Software and firmware updates – free for the lifetime of your receiver – can now be installed by the customer on site.
• Future-Proofing Simplified — Upgrades such as new DSP and GUI features can be added with a simple file download while your receiver is still in the test article.
• True Trellis Demodulation in all ARTM Modes — Provides true multi-symbol trellis detection in all three ARTM modes for optimal demodulation.
• 3.5 to 5 dB Improvement in PCM/FM Performance — Improves BER performance by 3.5 to 5 dB over the best single-symbol demodulators, to within 0.2 dB of the theoretical limit.
• Lowest Noise Figure — Typical 3.5 dB noise figure bests all other ARTM receivers on the market, hands down.
• Rapid Synchronization — Synchronizes up to 100 times faster – and maintains sync at lower signal-to-noise ratios – than any other ARTM demodulator.
• Available with Adaptive Equalization — Powerful decision-directed equalizer mitigates multipath distortion; Reduces dropouts caused by multipath reflections.

Product Literature