{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:CRNKPS5ILW4F76Z3PMBMVJICEP","short_pith_number":"pith:CRNKPS5I","canonical_record":{"source":{"id":"1808.07354","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-07-26T16:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"3d1e14915580be673d9f92356dccc133a3fe2e1a8bc76b4b52bb08391c262533","abstract_canon_sha256":"f882c5549e16e5da576a8a84b5db90fe5f748fcb9b7149cd8595b898648ebc81"},"schema_version":"1.0"},"canonical_sha256":"145aa7cba85db85ffb3b7b02caa50223fd764b73477c224f5156efd556609eda","source":{"kind":"arxiv","id":"1808.07354","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07354","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07354v1","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07354","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"pith_short_12","alias_value":"CRNKPS5ILW4F","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"CRNKPS5ILW4F76Z3","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"CRNKPS5I","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:CRNKPS5ILW4F76Z3PMBMVJICEP","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07354","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-07-26T16:08:36Z","cross_cats_sorted":[],"title_canon_sha256":"3d1e14915580be673d9f92356dccc133a3fe2e1a8bc76b4b52bb08391c262533","abstract_canon_sha256":"f882c5549e16e5da576a8a84b5db90fe5f748fcb9b7149cd8595b898648ebc81"},"schema_version":"1.0"},"canonical_sha256":"145aa7cba85db85ffb3b7b02caa50223fd764b73477c224f5156efd556609eda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:29.096271Z","signature_b64":"342n+TFBuV8URLBqRMN4uovwe93JdHlVO+BpQDvKTOjRlXbxCkoB4m4ZM/zodGWchVxM6P7o3IXUSnG0IlZQBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"145aa7cba85db85ffb3b7b02caa50223fd764b73477c224f5156efd556609eda","last_reissued_at":"2026-05-18T00:07:29.095750Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:29.095750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07354","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":"2026-05-18T00:07:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ALtztvgXzCPCbUuXQBaQhtUUOxdPzOq2u8EkxCP+0TmmgeWdqYzhhIB/4ecIfqFOhAchvl03ryaHEE81yASyCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T17:19:32.455728Z"},"content_sha256":"72cf35190dcee090ce9fd11b6a81d13088a868a3e27357efd50a78a2692117a5","schema_version":"1.0","event_id":"sha256:72cf35190dcee090ce9fd11b6a81d13088a868a3e27357efd50a78a2692117a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:CRNKPS5ILW4F76Z3PMBMVJICEP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Implementation of Uplink Network Coded Modulation for Two-Hop Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Alister Burr, David Grace, Tong Peng, Yi Chu","submitted_at":"2018-07-26T16:08:36Z","abstract_excerpt":"With the fast growing number of wireless devices and demand of user data, the backhaul load becomes a bottleneck in wireless networks. Physical layer network coding (PNC) allows Access Points (APs) to relay compressed, network coded user data, therefore reducing the backhaul traffic. In this paper, an implementation of uplink Network Coded Modulation (NetCoM) with PNC is presented. A 5-node prototype NetCoM system is established using Universal Software Radio Peripherals (USRPs) and a practical PNC scheme designed for binary systems is utilised. An orthogonal frequency division multiplexing (O"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07354","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":"2026-05-18T00:07:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hXbCSckKuP37C9GYZycZ28RoFZut7SCJhrGJcQiQovYMjIB555SzKP5dD8UnoTy2QgxjPjNUdP1dg6h7zB6SCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T17:19:32.456469Z"},"content_sha256":"50f98238dcc82c489450e42f90b32e89bd09a4e49d372704dc87898d458bc03d","schema_version":"1.0","event_id":"sha256:50f98238dcc82c489450e42f90b32e89bd09a4e49d372704dc87898d458bc03d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/bundle.json","state_url":"https://pith.science/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/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":"2026-06-11T17:19:32Z","links":{"resolver":"https://pith.science/pith/CRNKPS5ILW4F76Z3PMBMVJICEP","bundle":"https://pith.science/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/bundle.json","state":"https://pith.science/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CRNKPS5ILW4F76Z3PMBMVJICEP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:CRNKPS5ILW4F76Z3PMBMVJICEP","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":"f882c5549e16e5da576a8a84b5db90fe5f748fcb9b7149cd8595b898648ebc81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-07-26T16:08:36Z","title_canon_sha256":"3d1e14915580be673d9f92356dccc133a3fe2e1a8bc76b4b52bb08391c262533"},"schema_version":"1.0","source":{"id":"1808.07354","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07354","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07354v1","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07354","created_at":"2026-05-18T00:07:29Z"},{"alias_kind":"pith_short_12","alias_value":"CRNKPS5ILW4F","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"CRNKPS5ILW4F76Z3","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"CRNKPS5I","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:50f98238dcc82c489450e42f90b32e89bd09a4e49d372704dc87898d458bc03d","target":"graph","created_at":"2026-05-18T00:07:29Z","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":"With the fast growing number of wireless devices and demand of user data, the backhaul load becomes a bottleneck in wireless networks. Physical layer network coding (PNC) allows Access Points (APs) to relay compressed, network coded user data, therefore reducing the backhaul traffic. In this paper, an implementation of uplink Network Coded Modulation (NetCoM) with PNC is presented. A 5-node prototype NetCoM system is established using Universal Software Radio Peripherals (USRPs) and a practical PNC scheme designed for binary systems is utilised. An orthogonal frequency division multiplexing (O","authors_text":"Alister Burr, David Grace, Tong Peng, Yi Chu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-07-26T16:08:36Z","title":"Implementation of Uplink Network Coded Modulation for Two-Hop Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07354","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":"sha256:72cf35190dcee090ce9fd11b6a81d13088a868a3e27357efd50a78a2692117a5","target":"record","created_at":"2026-05-18T00:07:29Z","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":"f882c5549e16e5da576a8a84b5db90fe5f748fcb9b7149cd8595b898648ebc81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-07-26T16:08:36Z","title_canon_sha256":"3d1e14915580be673d9f92356dccc133a3fe2e1a8bc76b4b52bb08391c262533"},"schema_version":"1.0","source":{"id":"1808.07354","kind":"arxiv","version":1}},"canonical_sha256":"145aa7cba85db85ffb3b7b02caa50223fd764b73477c224f5156efd556609eda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"145aa7cba85db85ffb3b7b02caa50223fd764b73477c224f5156efd556609eda","first_computed_at":"2026-05-18T00:07:29.095750Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:29.095750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"342n+TFBuV8URLBqRMN4uovwe93JdHlVO+BpQDvKTOjRlXbxCkoB4m4ZM/zodGWchVxM6P7o3IXUSnG0IlZQBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:29.096271Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07354","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72cf35190dcee090ce9fd11b6a81d13088a868a3e27357efd50a78a2692117a5","sha256:50f98238dcc82c489450e42f90b32e89bd09a4e49d372704dc87898d458bc03d"],"state_sha256":"8d2a0174b669da1730013d10d7b2a2598c3d5c2d3e4d4f31c1332c40c1497298"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bFgwybXxPQmlBOdNeKeBwzAhJi6hexgakyRf4W03HrKy7WPFaU6jnmEeKKcPv78FzyM1dLn6kTWM/uLQU6Z+AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T17:19:32.460341Z","bundle_sha256":"1305bff3157f9ffaeca121bcdc9de348e8338b9f9b96c1eb0fae616b5789b66a"}}