Show HN: SIMD Viterbi Decoder in Rust
Supports any rate from 1/2 to 1/8 and any order from k=4 to k=16. On nightly Rust, the simd feature enables a Viterbi decoder with acceleration on SSE/AVX2/AVX512. Reed–Solomon codes over GF(2⁸) with error and erasure decoding, including the standard CCSDS (255,223) code in both the conventional and the on-the-wire dual-basis (Berlekamp) representations. fec started as and draws heavy inspiration from the author's own libcorrect, a C library for forward error correction.
- ▪Supports any rate from 1/2 to 1/8 and any order from k=4 to k=16.
- ▪On nightly Rust, the simd feature enables a Viterbi decoder with acceleration on SSE/AVX2/AVX512.
- ▪Reed–Solomon codes over GF(2⁸) with error and erasure decoding, including the standard CCSDS (255,223) code in both the conventional and the on-the-wire dual-basis (Berlekamp) representations. fec started as and draws heavy inspiration from
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| Original publisher | GitHub |
| Canonical URL | https://github.com/brian-armstrong/fec |
| Publication time | Tue, 04 Aug 2026 22:37:05 +0000 |
| Retrieval time | 2026-08-05T00:05:44.429Z |
| Last seen | 2026-08-05T00:05:44.429Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | rKOU4tIcVI2A · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
fec Forward error correction for SDR, space, and satellite applications. fec implements two error-correcting codes that show up throughout software-defined radio and spacecraft links: Convolutional codes with a Viterbi decoder (hard and soft decision), including the common rate-1/2 k=7, rate-1/2 k=9, rate-1/3 k=9, and rate-1/6 k=15 codes. Supports any rate from 1/2 to 1/8 and any order from k=4 to k=16. On nightly Rust, the simd feature enables a Viterbi decoder with acceleration on SSE/AVX2/AVX512. Reed–Solomon codes over GF(2⁸) with error and erasure decoding, including the standard CCSDS (255,223) code in both the conventional and the on-the-wire dual-basis (Berlekamp) representations.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.
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