{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:YXWIW6OODHGPTBL2W2L5XOAFHH","short_pith_number":"pith:YXWIW6OO","canonical_record":{"source":{"id":"1703.01432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-03-04T10:16:48Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"31936f4782f12faafc1cdb7ca083d513dbf9699324047be29ccb9cf6cd7b4f09","abstract_canon_sha256":"1c1fc8f2ecf18c8f4b2163ef6741682d44dba0c15881b4389ead4a74261ee540"},"schema_version":"1.0"},"canonical_sha256":"c5ec8b79ce19ccf9857ab697dbb80539ca394809ace3e54723b644cf90bcbef4","source":{"kind":"arxiv","id":"1703.01432","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.01432","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"arxiv_version","alias_value":"1703.01432v1","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.01432","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"pith_short_12","alias_value":"YXWIW6OODHGP","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"YXWIW6OODHGPTBL2","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"YXWIW6OO","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:YXWIW6OODHGPTBL2W2L5XOAFHH","target":"record","payload":{"canonical_record":{"source":{"id":"1703.01432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-03-04T10:16:48Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"31936f4782f12faafc1cdb7ca083d513dbf9699324047be29ccb9cf6cd7b4f09","abstract_canon_sha256":"1c1fc8f2ecf18c8f4b2163ef6741682d44dba0c15881b4389ead4a74261ee540"},"schema_version":"1.0"},"canonical_sha256":"c5ec8b79ce19ccf9857ab697dbb80539ca394809ace3e54723b644cf90bcbef4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:30.762913Z","signature_b64":"vFxUjWKo5GYehpQWUxlp3Z5yYGoT+htSG0Vwr0aMHL4XKpOfsecUdnO7ZttMZ4mwE/vNqILA4d1pkSw9zoyyCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5ec8b79ce19ccf9857ab697dbb80539ca394809ace3e54723b644cf90bcbef4","last_reissued_at":"2026-05-18T00:49:30.762179Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:30.762179Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.01432","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:49:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kwzntffJLxFxcqzK7Tlugz4lm+ZJlHdMXS9SSwtia18EdnPIL9qSqmkTn9vKbSAql6F491nH1BDpy9yVg0CuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:00:10.847571Z"},"content_sha256":"84d6e6e62cdb3513ba29512847795373b205668ee629bcd1148c9b6223b7d91d","schema_version":"1.0","event_id":"sha256:84d6e6e62cdb3513ba29512847795373b205668ee629bcd1148c9b6223b7d91d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:YXWIW6OODHGPTBL2W2L5XOAFHH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Noncoherent Analog Network Coding using LDPC-coded FSK","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Matthew C. Valenti, Terry Ferrett","submitted_at":"2017-03-04T10:16:48Z","abstract_excerpt":"Analog network coding (ANC) is a throughput increasing technique for the two-way relay channel (TWRC) whereby two end nodes transmit simultaneously to a relay at the same time and band, followed by the relay broadcasting the received sum of signals to the end nodes. Coherent reception under ANC is challenging due to requiring oscillator synchronization for all nodes, a problem further exacerbated by Doppler shift. This work develops a noncoherent M-ary frequency-shift keyed (FSK) demodulator implementing ANC. The demodulator produces soft outputs suitable for use with capacity-approaching chan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.01432","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:49:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bx9z9eJW8UCgamA3nZ+rz535Pi9Z/LcS/ViK85Lvg0edE6bwFxtnKhoSRc+CThjmn2E6FXmGTm2Rkiq/Cz/pDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T03:00:10.848078Z"},"content_sha256":"b45f13ce0fc83e741be9c4318d7aba85a21bd0ebf3c9602583a8753fc264d41a","schema_version":"1.0","event_id":"sha256:b45f13ce0fc83e741be9c4318d7aba85a21bd0ebf3c9602583a8753fc264d41a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/bundle.json","state_url":"https://pith.science/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T03:00:10Z","links":{"resolver":"https://pith.science/pith/YXWIW6OODHGPTBL2W2L5XOAFHH","bundle":"https://pith.science/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/bundle.json","state":"https://pith.science/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YXWIW6OODHGPTBL2W2L5XOAFHH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:YXWIW6OODHGPTBL2W2L5XOAFHH","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":"1c1fc8f2ecf18c8f4b2163ef6741682d44dba0c15881b4389ead4a74261ee540","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-03-04T10:16:48Z","title_canon_sha256":"31936f4782f12faafc1cdb7ca083d513dbf9699324047be29ccb9cf6cd7b4f09"},"schema_version":"1.0","source":{"id":"1703.01432","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.01432","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"arxiv_version","alias_value":"1703.01432v1","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.01432","created_at":"2026-05-18T00:49:30Z"},{"alias_kind":"pith_short_12","alias_value":"YXWIW6OODHGP","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"YXWIW6OODHGPTBL2","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"YXWIW6OO","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:b45f13ce0fc83e741be9c4318d7aba85a21bd0ebf3c9602583a8753fc264d41a","target":"graph","created_at":"2026-05-18T00:49:30Z","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":"Analog network coding (ANC) is a throughput increasing technique for the two-way relay channel (TWRC) whereby two end nodes transmit simultaneously to a relay at the same time and band, followed by the relay broadcasting the received sum of signals to the end nodes. Coherent reception under ANC is challenging due to requiring oscillator synchronization for all nodes, a problem further exacerbated by Doppler shift. This work develops a noncoherent M-ary frequency-shift keyed (FSK) demodulator implementing ANC. The demodulator produces soft outputs suitable for use with capacity-approaching chan","authors_text":"Matthew C. Valenti, Terry Ferrett","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-03-04T10:16:48Z","title":"Noncoherent Analog Network Coding using LDPC-coded FSK"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.01432","kind":"arxiv","version":1},"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":"sha256:84d6e6e62cdb3513ba29512847795373b205668ee629bcd1148c9b6223b7d91d","target":"record","created_at":"2026-05-18T00:49:30Z","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":"1c1fc8f2ecf18c8f4b2163ef6741682d44dba0c15881b4389ead4a74261ee540","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-03-04T10:16:48Z","title_canon_sha256":"31936f4782f12faafc1cdb7ca083d513dbf9699324047be29ccb9cf6cd7b4f09"},"schema_version":"1.0","source":{"id":"1703.01432","kind":"arxiv","version":1}},"canonical_sha256":"c5ec8b79ce19ccf9857ab697dbb80539ca394809ace3e54723b644cf90bcbef4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5ec8b79ce19ccf9857ab697dbb80539ca394809ace3e54723b644cf90bcbef4","first_computed_at":"2026-05-18T00:49:30.762179Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:30.762179Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vFxUjWKo5GYehpQWUxlp3Z5yYGoT+htSG0Vwr0aMHL4XKpOfsecUdnO7ZttMZ4mwE/vNqILA4d1pkSw9zoyyCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:30.762913Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.01432","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84d6e6e62cdb3513ba29512847795373b205668ee629bcd1148c9b6223b7d91d","sha256:b45f13ce0fc83e741be9c4318d7aba85a21bd0ebf3c9602583a8753fc264d41a"],"state_sha256":"af595a8efccb20a4570de3daeefb391798c6aaa5b4a847260b5981918a1a8094"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rllvZU0LRffnvsiSkMC4DhMlRmt4rEuFlDpWvCJYLFlWxt9yrYW1lhZoPRW8bZIN+g6uhb1ur2xMm8SGYqqEDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T03:00:10.851045Z","bundle_sha256":"a9033f340d88a81046c051dafd93de11d9856ad9661e0d358e89b11ef5c4c29e"}}