High Data Rate Enhanced Demodulator (HDRM-D2)

The Zaltys High Data Rate Enhanced Demodulator (HDRM-D2) IP core efficiently realizes the digital baseband section of a high performance modem receive path. Using sophisticated DSP techniques, the core can demodulate BPSK, QPSK, OQPSK, 8PSK, 8QAM (3 shapes), 16QAM, 64QAM, 16APSK & 32APSK schemes, all to a high performance level and at high symbol rates.

Functional blocks include:

  • Radio Interface including AGC
  • Quasi-Zero IF to Baseband Conversion
  • Sample Decimation
  • Symbol Timing Recovery
  • Symbol Rate Blind Adaptive Equaliser
  • Carrier Recovery

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Technical Features
Versatile & high performance digital demodulation engine
BPSK, QPSK, OQPSK, 8PSK, 8QAM (3 shapes), 16QAM, 64QAM, 16APSK & 32APSK
Close to theoretical performance
Increased datapath resolution deals with elevated adjacent carrier interference
N-stage symbol rate blind adaptive equaliser
Continuously variable baud rates
Supports typical rates of 4.9kbaud to 40Mbaud with 100MHz clock
Four matched filter configurations
Fast acquisition algorithm
Coarse & fine frequency scans
High probability of first pass acquisition
Status interface reports real-time demodulation state
Simple microprocessor interface (SMPI)
Comes with software driver in C
Fully programmable via microprocessor interface
Suitable for FPGA or ASIC
Synchronous with single clock
Proven by multiple customers in multiple applications