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IP Core Products > General > Universal QAM demodulator |
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Universal QAM demodulator |
| Product code: CMS0006 |
Our universal QAM Demodulator core is aimed at broadband
point-to-point and point-to-multipoint applications and supports QAM orders from
2 (BPSK) to 256.
Integrates with Commsonics QAM Modulator(CMS0004),
Reed-Solomon(CMS0013) and Viterbi(CMS0002) cores to form a complete broadband
Modem.
Also see:
Universal QAM/PSK modulator
DVB-C/J83 demodulator
Viterbi codecs
Reed-Solomon
codecs |
Block diagram
Click on image for further information
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Downloads
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Features
Low demodulator implementation loss
<0.2dB (16QAM), <0.4dB (256QAM).
IF sub-sampling or I/Q baseband input.
Wide carrier acquisition range.
Programmable symbol rate.
Large QAM support : BPSK .. QAM-256.
Variable ADC sampling frequency. |
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Applications
Cable downstream
(e.g. DOCSIS, DVB-C).
Point-to-point terrestrial microwave
(e.g. ETSI, FCC channels up to
56MHz).
Satellite up/downlink
(e.g. DVB-S, DVB-DSNG).
Burst-mode TDMA
(e.g. Cable upstream). |
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Implementation
Single external clock source.
Single external analogue AGC loop.
All-digital timing and carrier recovery.
Digital channel filtering.
Optimised for ASIC, Xilinx and Altera.
Evaluation boards available.
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