{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:DVGWV2VX3JIOT4B75O55YL4BEX","short_pith_number":"pith:DVGWV2VX","canonical_record":{"source":{"id":"1503.06466","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-22T19:29:00Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"f8fcbadefc76faeff74710773097366936526a7c11bcd4a09f7aad96d1274354","abstract_canon_sha256":"b6427c59785566640248fe0083878bc6463c8a48c0dde7298c8046942d93e994"},"schema_version":"1.0"},"canonical_sha256":"1d4d6aeab7da50e9f03febbbdc2f8125fc4e3fa4d686d78b87a2e63d482a86bb","source":{"kind":"arxiv","id":"1503.06466","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06466","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06466v2","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06466","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"pith_short_12","alias_value":"DVGWV2VX3JIO","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DVGWV2VX3JIOT4B7","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DVGWV2VX","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:DVGWV2VX3JIOT4B75O55YL4BEX","target":"record","payload":{"canonical_record":{"source":{"id":"1503.06466","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-22T19:29:00Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"f8fcbadefc76faeff74710773097366936526a7c11bcd4a09f7aad96d1274354","abstract_canon_sha256":"b6427c59785566640248fe0083878bc6463c8a48c0dde7298c8046942d93e994"},"schema_version":"1.0"},"canonical_sha256":"1d4d6aeab7da50e9f03febbbdc2f8125fc4e3fa4d686d78b87a2e63d482a86bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:18.376287Z","signature_b64":"xV2Tc0edR1a5eODHtgAZWUu1E/SdMiGkheSYEO7hrFCzQthN78FW/Ymeg+5dPqgSL1opEDGrd40maNTviIlMBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1d4d6aeab7da50e9f03febbbdc2f8125fc4e3fa4d686d78b87a2e63d482a86bb","last_reissued_at":"2026-05-18T01:11:18.375587Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:18.375587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.06466","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5HXsPBt+UdpqT0gcr6RvWKlR24UhTCviwv4BWOKvkER6wsQGw4XFteOVRIHapMM0kd7Lx7HIJ8EDxuTIkowaDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:03:53.491976Z"},"content_sha256":"7d11781b887effc917d94c0d1a6f21adc36dcd26c240fd9cebc4650211df9f3e","schema_version":"1.0","event_id":"sha256:7d11781b887effc917d94c0d1a6f21adc36dcd26c240fd9cebc4650211df9f3e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:DVGWV2VX3JIOT4B75O55YL4BEX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Is the Low-Complexity Mobile-Relay-Aided FFR-DAS Capable of Outperforming the High-Complexity CoMP?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Dimitrios Alanis, Lajos Hanzo, Shaoshi Yang, Soon Xin Ng, Xinyi Xu","submitted_at":"2015-03-22T19:29:00Z","abstract_excerpt":"Coordinated multi-point transmission/reception aided collocated antenna system (CoMP-CAS) and mobile relay assisted fractional frequency reuse distributed antenna system (MR-FFR-DAS) constitute a pair of virtual-MIMO based technical options for achieving high spectral efficiency in interference-limited cellular networks. In practice both techniques have their respective pros and cons, which are studied in this paper by evaluating the achievable cell-edge performance on the uplink of multicell systems. We show that assuming the same antenna configuration in both networks, the maximum available "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06466","kind":"arxiv","version":2},"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":"2026-05-18T01:11:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xRhm9LQ+RY4m8MMdwT/OIR9pLcakE3STxq1fFnAR+PAsz2iV+nh45HULW50sLISpvUl7gJzIMsyxbWx/bAX9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:03:53.492556Z"},"content_sha256":"42af93a96c48e6510860d01af08a325afd2e8e7e1093b08ec661db1e5a460437","schema_version":"1.0","event_id":"sha256:42af93a96c48e6510860d01af08a325afd2e8e7e1093b08ec661db1e5a460437"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DVGWV2VX3JIOT4B75O55YL4BEX/bundle.json","state_url":"https://pith.science/pith/DVGWV2VX3JIOT4B75O55YL4BEX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DVGWV2VX3JIOT4B75O55YL4BEX/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":"2026-05-26T22:03:53Z","links":{"resolver":"https://pith.science/pith/DVGWV2VX3JIOT4B75O55YL4BEX","bundle":"https://pith.science/pith/DVGWV2VX3JIOT4B75O55YL4BEX/bundle.json","state":"https://pith.science/pith/DVGWV2VX3JIOT4B75O55YL4BEX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DVGWV2VX3JIOT4B75O55YL4BEX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DVGWV2VX3JIOT4B75O55YL4BEX","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":"b6427c59785566640248fe0083878bc6463c8a48c0dde7298c8046942d93e994","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-22T19:29:00Z","title_canon_sha256":"f8fcbadefc76faeff74710773097366936526a7c11bcd4a09f7aad96d1274354"},"schema_version":"1.0","source":{"id":"1503.06466","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06466","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06466v2","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06466","created_at":"2026-05-18T01:11:18Z"},{"alias_kind":"pith_short_12","alias_value":"DVGWV2VX3JIO","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DVGWV2VX3JIOT4B7","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DVGWV2VX","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:42af93a96c48e6510860d01af08a325afd2e8e7e1093b08ec661db1e5a460437","target":"graph","created_at":"2026-05-18T01:11:18Z","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":"Coordinated multi-point transmission/reception aided collocated antenna system (CoMP-CAS) and mobile relay assisted fractional frequency reuse distributed antenna system (MR-FFR-DAS) constitute a pair of virtual-MIMO based technical options for achieving high spectral efficiency in interference-limited cellular networks. In practice both techniques have their respective pros and cons, which are studied in this paper by evaluating the achievable cell-edge performance on the uplink of multicell systems. We show that assuming the same antenna configuration in both networks, the maximum available ","authors_text":"Dimitrios Alanis, Lajos Hanzo, Shaoshi Yang, Soon Xin Ng, Xinyi Xu","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-22T19:29:00Z","title":"Is the Low-Complexity Mobile-Relay-Aided FFR-DAS Capable of Outperforming the High-Complexity CoMP?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06466","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":"sha256:7d11781b887effc917d94c0d1a6f21adc36dcd26c240fd9cebc4650211df9f3e","target":"record","created_at":"2026-05-18T01:11:18Z","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":"b6427c59785566640248fe0083878bc6463c8a48c0dde7298c8046942d93e994","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-22T19:29:00Z","title_canon_sha256":"f8fcbadefc76faeff74710773097366936526a7c11bcd4a09f7aad96d1274354"},"schema_version":"1.0","source":{"id":"1503.06466","kind":"arxiv","version":2}},"canonical_sha256":"1d4d6aeab7da50e9f03febbbdc2f8125fc4e3fa4d686d78b87a2e63d482a86bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1d4d6aeab7da50e9f03febbbdc2f8125fc4e3fa4d686d78b87a2e63d482a86bb","first_computed_at":"2026-05-18T01:11:18.375587Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:18.375587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xV2Tc0edR1a5eODHtgAZWUu1E/SdMiGkheSYEO7hrFCzQthN78FW/Ymeg+5dPqgSL1opEDGrd40maNTviIlMBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:18.376287Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.06466","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7d11781b887effc917d94c0d1a6f21adc36dcd26c240fd9cebc4650211df9f3e","sha256:42af93a96c48e6510860d01af08a325afd2e8e7e1093b08ec661db1e5a460437"],"state_sha256":"fcf3e28db721098fa43987784733f609cb843332fb6147e64d1f9bc3d1d3d5fc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"axFzdMbaizzuUHN3V06S0MaEVuW/J0mH5jknNnYEkGJpC/mXUc6GsF9Vy63jAmG5XM8/SZ1v84QIfnXqUp3nBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:03:53.495476Z","bundle_sha256":"88c78e79a188893133142b5ecf71dfcdc83f05e4f360e1b01a9f7ae25e470338"}}