{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:WTBJRQFTILFJ4RY6SPVD2U3GPE","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c921dfa333672d8f21b114845046e75fae37f26ef80eab4ac325fd20c991cec9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-11T11:15:46Z","title_canon_sha256":"2fe8ba3dd651d171892cb5c4c1c547a221b8156e745ade5585e1a74dd3b8c2d8"},"schema_version":"1.0","source":{"id":"1708.07103","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.07103","created_at":"2026-05-18T00:35:30Z"},{"alias_kind":"arxiv_version","alias_value":"1708.07103v2","created_at":"2026-05-18T00:35:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.07103","created_at":"2026-05-18T00:35:30Z"},{"alias_kind":"pith_short_12","alias_value":"WTBJRQFTILFJ","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_16","alias_value":"WTBJRQFTILFJ4RY6","created_at":"2026-05-18T12:31:53Z"},{"alias_kind":"pith_short_8","alias_value":"WTBJRQFT","created_at":"2026-05-18T12:31:53Z"}],"graph_snapshots":[{"event_id":"sha256:38d8ca17d133109683693f567374e9bcb9513a4881640952ba5c1effd1c6c887","target":"graph","created_at":"2026-05-18T00:35:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"This paper shows experimental systems using R/G/B LEDs as both the emitters and narrowband filterless photodetectors to realize multiple-input multiple-output (MIMO) visible light communications. Among 9 tested color-pair links from R/G/B LEDs to R/G/B LEDs, the R-R link and B-G link exhibit the best quality. With a 2 times 2 MIMO setup, the implemented OOK system can achieve a data rate of 40kbps and 20 kbps under half duplex and full duplex designs respectively, without any amplifying and equalizing circuits. When LEDs are used as photodetectors, the measured LED impedance spectrum versus fr","authors_text":"Boyang Huang, Shangbin Li, Zhengyuan Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-11T11:15:46Z","title":"Experimental MIMO VLC Systems Using Tricolor LED Transmitters and Receivers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.07103","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b97397da7a55231bdcdf8f47ed18665b0bebd3ac288ae1907b69ca92e7934ab0","target":"record","created_at":"2026-05-18T00:35:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c921dfa333672d8f21b114845046e75fae37f26ef80eab4ac325fd20c991cec9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-07-11T11:15:46Z","title_canon_sha256":"2fe8ba3dd651d171892cb5c4c1c547a221b8156e745ade5585e1a74dd3b8c2d8"},"schema_version":"1.0","source":{"id":"1708.07103","kind":"arxiv","version":2}},"canonical_sha256":"b4c298c0b342ca9e471e93ea3d5366793a1d78324af0fd0aa8fe5417048399d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4c298c0b342ca9e471e93ea3d5366793a1d78324af0fd0aa8fe5417048399d0","first_computed_at":"2026-05-18T00:35:30.501041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:30.501041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sN4ZEZJB3zATcFTpMwASWr3Vdc/VrLk+1TqS3HhpXfMfkhv2chy/vGiF98x84HBBV2AwqnQs9S/0kxIu7SaNBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:30.501607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.07103","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b97397da7a55231bdcdf8f47ed18665b0bebd3ac288ae1907b69ca92e7934ab0","sha256:38d8ca17d133109683693f567374e9bcb9513a4881640952ba5c1effd1c6c887"],"state_sha256":"d7f6710167f20d22334c9e27b35d4c37958b9ced50818a1f2cc046518930eb90"}