{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MVUH7CCZYETY5BKPPIF7TE4CII","short_pith_number":"pith:MVUH7CCZ","canonical_record":{"source":{"id":"1912.06917","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-12-14T20:16:23Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0d88696c28cc681822f487a70ff0383fd5dea8faecdf76a1aee2348aab2df8c7","abstract_canon_sha256":"a13bbcc67c9f1cf977ee5b7d3918a9b91750ce1f37e7710e27486bf010ffbe68"},"schema_version":"1.0"},"canonical_sha256":"65687f8859c1278e854f7a0bf993824207be7865690cbf41ae75b7aefd8ac6c0","source":{"kind":"arxiv","id":"1912.06917","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.06917","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"arxiv_version","alias_value":"1912.06917v1","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.06917","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_12","alias_value":"MVUH7CCZYETY","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_16","alias_value":"MVUH7CCZYETY5BKP","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_8","alias_value":"MVUH7CCZ","created_at":"2026-07-05T00:26:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MVUH7CCZYETY5BKPPIF7TE4CII","target":"record","payload":{"canonical_record":{"source":{"id":"1912.06917","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-12-14T20:16:23Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0d88696c28cc681822f487a70ff0383fd5dea8faecdf76a1aee2348aab2df8c7","abstract_canon_sha256":"a13bbcc67c9f1cf977ee5b7d3918a9b91750ce1f37e7710e27486bf010ffbe68"},"schema_version":"1.0"},"canonical_sha256":"65687f8859c1278e854f7a0bf993824207be7865690cbf41ae75b7aefd8ac6c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:26:16.766842Z","signature_b64":"Dx9HouDDE1OYKu12+AaWxY/VonTVoAdQzp8pn+WmhqG3Z/v8aEAC6BOybpQM/kscIX4ogjZmJnHDQqCpHsd2Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65687f8859c1278e854f7a0bf993824207be7865690cbf41ae75b7aefd8ac6c0","last_reissued_at":"2026-07-05T00:26:16.766347Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:26:16.766347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1912.06917","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":"2026-07-05T00:26:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RDH1GooFVANnc9ip3pD2+ZNt80CzSlv36yo/TpyJ7EMWFV3WeNmFSZzC2VDddkLpPPDypslhaFOWNqJ27O0gAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T06:58:04.053316Z"},"content_sha256":"53fc5f651c94a572cfee79d80388f9bd6ba68eba03af1216499dadd05702d75a","schema_version":"1.0","event_id":"sha256:53fc5f651c94a572cfee79d80388f9bd6ba68eba03af1216499dadd05702d75a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MVUH7CCZYETY5BKPPIF7TE4CII","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamic Metasurface Antennas for MIMO-OFDM Receivers with Bit-Limited ADCs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"David R. Smith, Hanqing Wang, Insang Yoo, Mohammadreza F. Imani, Nir Shlezinger, Shi Jin, Yonina C. Eldar","submitted_at":"2019-12-14T20:16:23Z","abstract_excerpt":"The combination of orthogonal frequency modulation (OFDM) and multiple-input multiple-output (MIMO) systems plays an important role in modern communication systems. In order to meet the growing throughput demands, future MIMO-OFDM receivers are expected to utilize a massive number of antennas, operate in dynamic environments, and explore high frequency bands, while satisfying strict constraints in terms of cost, power, and size. An emerging technology to realize massive MIMO receivers of reduced cost and power consumption is based on dynamic metasurface antennas (DMAs), which inherently implem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.06917","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.06917/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:26:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YSXBN51t//F/71RCdCao66z70p0wH5gMkwTpHavCjiHx4wBfIfnnQUoEuZlxlK1cF0mj7+zWCtBPWD3Hi0kWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T06:58:04.053810Z"},"content_sha256":"1b478d9035a17cb16a3102de9ae15e6da3b80fd2c41d3b4adf52a4f40f801761","schema_version":"1.0","event_id":"sha256:1b478d9035a17cb16a3102de9ae15e6da3b80fd2c41d3b4adf52a4f40f801761"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MVUH7CCZYETY5BKPPIF7TE4CII/bundle.json","state_url":"https://pith.science/pith/MVUH7CCZYETY5BKPPIF7TE4CII/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MVUH7CCZYETY5BKPPIF7TE4CII/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":"2026-08-09T06:58:04Z","links":{"resolver":"https://pith.science/pith/MVUH7CCZYETY5BKPPIF7TE4CII","bundle":"https://pith.science/pith/MVUH7CCZYETY5BKPPIF7TE4CII/bundle.json","state":"https://pith.science/pith/MVUH7CCZYETY5BKPPIF7TE4CII/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MVUH7CCZYETY5BKPPIF7TE4CII/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MVUH7CCZYETY5BKPPIF7TE4CII","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":"a13bbcc67c9f1cf977ee5b7d3918a9b91750ce1f37e7710e27486bf010ffbe68","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-12-14T20:16:23Z","title_canon_sha256":"0d88696c28cc681822f487a70ff0383fd5dea8faecdf76a1aee2348aab2df8c7"},"schema_version":"1.0","source":{"id":"1912.06917","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.06917","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"arxiv_version","alias_value":"1912.06917v1","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.06917","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_12","alias_value":"MVUH7CCZYETY","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_16","alias_value":"MVUH7CCZYETY5BKP","created_at":"2026-07-05T00:26:16Z"},{"alias_kind":"pith_short_8","alias_value":"MVUH7CCZ","created_at":"2026-07-05T00:26:16Z"}],"graph_snapshots":[{"event_id":"sha256:1b478d9035a17cb16a3102de9ae15e6da3b80fd2c41d3b4adf52a4f40f801761","target":"graph","created_at":"2026-07-05T00:26:16Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1912.06917/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The combination of orthogonal frequency modulation (OFDM) and multiple-input multiple-output (MIMO) systems plays an important role in modern communication systems. In order to meet the growing throughput demands, future MIMO-OFDM receivers are expected to utilize a massive number of antennas, operate in dynamic environments, and explore high frequency bands, while satisfying strict constraints in terms of cost, power, and size. An emerging technology to realize massive MIMO receivers of reduced cost and power consumption is based on dynamic metasurface antennas (DMAs), which inherently implem","authors_text":"David R. Smith, Hanqing Wang, Insang Yoo, Mohammadreza F. Imani, Nir Shlezinger, Shi Jin, Yonina C. Eldar","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-12-14T20:16:23Z","title":"Dynamic Metasurface Antennas for MIMO-OFDM Receivers with Bit-Limited ADCs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.06917","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":"sha256:53fc5f651c94a572cfee79d80388f9bd6ba68eba03af1216499dadd05702d75a","target":"record","created_at":"2026-07-05T00:26:16Z","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":"a13bbcc67c9f1cf977ee5b7d3918a9b91750ce1f37e7710e27486bf010ffbe68","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-12-14T20:16:23Z","title_canon_sha256":"0d88696c28cc681822f487a70ff0383fd5dea8faecdf76a1aee2348aab2df8c7"},"schema_version":"1.0","source":{"id":"1912.06917","kind":"arxiv","version":1}},"canonical_sha256":"65687f8859c1278e854f7a0bf993824207be7865690cbf41ae75b7aefd8ac6c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65687f8859c1278e854f7a0bf993824207be7865690cbf41ae75b7aefd8ac6c0","first_computed_at":"2026-07-05T00:26:16.766347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:26:16.766347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Dx9HouDDE1OYKu12+AaWxY/VonTVoAdQzp8pn+WmhqG3Z/v8aEAC6BOybpQM/kscIX4ogjZmJnHDQqCpHsd2Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:26:16.766842Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.06917","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53fc5f651c94a572cfee79d80388f9bd6ba68eba03af1216499dadd05702d75a","sha256:1b478d9035a17cb16a3102de9ae15e6da3b80fd2c41d3b4adf52a4f40f801761"],"state_sha256":"ef703424eaec8a83e12f3bc86080debf4315b03178782b30e093ca795cd3515e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vr1yiRJ1rBy0JV6c2M9cdvPBNeqIWt2hshHwTQdt7GesMt56YndR1soXx+O9XxqjP7DRvEkNcbcLas7HAkhnBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T06:58:04.057426Z","bundle_sha256":"c34b2191992410ed02da7eeab0030e457755243b21ee705b29362a19bc93bbbc"}}