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Automatic phase synchronization and monitoring. |
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Integrated 16 state Viterbi decoder. |
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Standards Compliance: MCNS DOCSIS, ITU-T J.83-B, IEEE 802.14. |
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Integrated 3-error correcting Reed-Solomon decoder. |
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Includes MPEG bit stream synchronization circuit. |
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BER monitoring, using path metric accumulator growth or Reed-Solomon statistics. |
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Supports all Interleaving modes, using either an internal or external RAM, or both. |
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Fully synchronous design. |
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Available as synthesizable Verilog-HDL source. |
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Includes test-vector files, as well as Verilog test benches. |
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Includes Matlab models for system integration and simulation. |
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Includes Synopsys synthesis scripts. |
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Customization available per request. |
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Proprietary FEC algorithms give highest possible performance. |
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Performance: | 256 QAM 10 -8 BER @ 27.3 dB SNR 64 QAM 10 -8 BER @ 21.2 dB SNR | |
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Requires 8 clocks per input symbol (approx 50MHz). |
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FEC area requirements: approx 95k gates with 10k bits of single port RAM. |
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RAM requirements for de-interleaver range from 448 x 7 bits up to 64k x 7 bits, depending upon which modes are supported. |