{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VZ43IFH43DUK57BFJG3S4SMHMH","short_pith_number":"pith:VZ43IFH4","canonical_record":{"source":{"id":"1707.07401","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-24T04:33:54Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"80bf81f61254f3e9987ad8bd3a02ca50b89c04f2ac5865275e1a493c5b5b7162","abstract_canon_sha256":"bedaf6e779e422e5b074f0a4b785121e06b16ebb90bcc149d9d03a2235b0a706"},"schema_version":"1.0"},"canonical_sha256":"ae79b414fcd8e8aefc2549b72e498761c44bcf8541a51bad30f532a0f15e64c8","source":{"kind":"arxiv","id":"1707.07401","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07401","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07401v1","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07401","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"pith_short_12","alias_value":"VZ43IFH43DUK","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VZ43IFH43DUK57BF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VZ43IFH4","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VZ43IFH43DUK57BFJG3S4SMHMH","target":"record","payload":{"canonical_record":{"source":{"id":"1707.07401","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-24T04:33:54Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"80bf81f61254f3e9987ad8bd3a02ca50b89c04f2ac5865275e1a493c5b5b7162","abstract_canon_sha256":"bedaf6e779e422e5b074f0a4b785121e06b16ebb90bcc149d9d03a2235b0a706"},"schema_version":"1.0"},"canonical_sha256":"ae79b414fcd8e8aefc2549b72e498761c44bcf8541a51bad30f532a0f15e64c8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:42.354950Z","signature_b64":"a4kDmhNR8/LMXbFY9cJcP5BA8c3zBN4aF2icmeKQpKLB+JF8eAC0FjgOfFpKapBSFXR0T5vyqRx1cb4cQgGBDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae79b414fcd8e8aefc2549b72e498761c44bcf8541a51bad30f532a0f15e64c8","last_reissued_at":"2026-05-18T00:39:42.354206Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:42.354206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.07401","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":"2026-05-18T00:39:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vLXigX26DnzUkxTHSE5Qkpd/gtoDAQjkcHZykMQaPWrS7SHhwPcKQiv1EvVasmT/q8u7az64LZkhKdRp5O7qAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:37:08.522811Z"},"content_sha256":"2213f9d9b80ba0f235095a4d482ccbd04692750e766a9c072a5fe5d5fd5f07a3","schema_version":"1.0","event_id":"sha256:2213f9d9b80ba0f235095a4d482ccbd04692750e766a9c072a5fe5d5fd5f07a3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VZ43IFH43DUK57BFJG3S4SMHMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Grant-Free Massive NOMA: Outage Probability and Throughput","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Branka Vucetic, Mahyar Shirvanimoghaddam, Rana Abbas, Yonghui Li","submitted_at":"2017-07-24T04:33:54Z","abstract_excerpt":"In this paper, we consider a massive uncoordinated non-orthogonal multiple access (NOMA) scheme where devices have strict latency requirements and no retransmission opportunities are available. Each device chooses a pilot sequence from a predetermined set as its signature and transmits its selected pilot and data simultaneously. A collision occurs when two or more devices choose the same pilot sequence. Collisions are treated as interference to the remaining received signals. We consider successive joint decoding (SJD) and successive interference cancellation (SIC) under a Rayleigh fading and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07401","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":"2026-05-18T00:39:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dKRjt4LE3MqrsValW2ajQVRCg0Lli97i76mc64OGtGgQaoUUikfdmSamxccGnpgJL+X1HI19wztzJKlzzCwnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:37:08.523485Z"},"content_sha256":"851732f9659da117253023e6f6ac58ab0442520f3dcfdb9d842a2e06f180d145","schema_version":"1.0","event_id":"sha256:851732f9659da117253023e6f6ac58ab0442520f3dcfdb9d842a2e06f180d145"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VZ43IFH43DUK57BFJG3S4SMHMH/bundle.json","state_url":"https://pith.science/pith/VZ43IFH43DUK57BFJG3S4SMHMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VZ43IFH43DUK57BFJG3S4SMHMH/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":"2026-05-26T05:37:08Z","links":{"resolver":"https://pith.science/pith/VZ43IFH43DUK57BFJG3S4SMHMH","bundle":"https://pith.science/pith/VZ43IFH43DUK57BFJG3S4SMHMH/bundle.json","state":"https://pith.science/pith/VZ43IFH43DUK57BFJG3S4SMHMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VZ43IFH43DUK57BFJG3S4SMHMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VZ43IFH43DUK57BFJG3S4SMHMH","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":"bedaf6e779e422e5b074f0a4b785121e06b16ebb90bcc149d9d03a2235b0a706","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-24T04:33:54Z","title_canon_sha256":"80bf81f61254f3e9987ad8bd3a02ca50b89c04f2ac5865275e1a493c5b5b7162"},"schema_version":"1.0","source":{"id":"1707.07401","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07401","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07401v1","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07401","created_at":"2026-05-18T00:39:42Z"},{"alias_kind":"pith_short_12","alias_value":"VZ43IFH43DUK","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VZ43IFH43DUK57BF","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VZ43IFH4","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:851732f9659da117253023e6f6ac58ab0442520f3dcfdb9d842a2e06f180d145","target":"graph","created_at":"2026-05-18T00:39:42Z","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":"In this paper, we consider a massive uncoordinated non-orthogonal multiple access (NOMA) scheme where devices have strict latency requirements and no retransmission opportunities are available. Each device chooses a pilot sequence from a predetermined set as its signature and transmits its selected pilot and data simultaneously. A collision occurs when two or more devices choose the same pilot sequence. Collisions are treated as interference to the remaining received signals. We consider successive joint decoding (SJD) and successive interference cancellation (SIC) under a Rayleigh fading and ","authors_text":"Branka Vucetic, Mahyar Shirvanimoghaddam, Rana Abbas, Yonghui Li","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-24T04:33:54Z","title":"Grant-Free Massive NOMA: Outage Probability and Throughput"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07401","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":"sha256:2213f9d9b80ba0f235095a4d482ccbd04692750e766a9c072a5fe5d5fd5f07a3","target":"record","created_at":"2026-05-18T00:39:42Z","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":"bedaf6e779e422e5b074f0a4b785121e06b16ebb90bcc149d9d03a2235b0a706","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-24T04:33:54Z","title_canon_sha256":"80bf81f61254f3e9987ad8bd3a02ca50b89c04f2ac5865275e1a493c5b5b7162"},"schema_version":"1.0","source":{"id":"1707.07401","kind":"arxiv","version":1}},"canonical_sha256":"ae79b414fcd8e8aefc2549b72e498761c44bcf8541a51bad30f532a0f15e64c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae79b414fcd8e8aefc2549b72e498761c44bcf8541a51bad30f532a0f15e64c8","first_computed_at":"2026-05-18T00:39:42.354206Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:42.354206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a4kDmhNR8/LMXbFY9cJcP5BA8c3zBN4aF2icmeKQpKLB+JF8eAC0FjgOfFpKapBSFXR0T5vyqRx1cb4cQgGBDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:42.354950Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.07401","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2213f9d9b80ba0f235095a4d482ccbd04692750e766a9c072a5fe5d5fd5f07a3","sha256:851732f9659da117253023e6f6ac58ab0442520f3dcfdb9d842a2e06f180d145"],"state_sha256":"5be0bd491b3bb7ffb91de54a028c04a77f292cf151275463bcb28e0b7922bed0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jAayL3AXKIOFUfONDx1brsmeWh8//jy8Ir1b1qptEeu1hZfNrRMatFa5eEywOgqrSMbN7zRdiL63E3ZVpmkaCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T05:37:08.791389Z","bundle_sha256":"9da3775553096d5fd4cd295269f41e342edaad19b1aecc9bbdb5572565264ffa"}}