{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:M6YBP4KEQN22HH5FCIPYUEL5NL","short_pith_number":"pith:M6YBP4KE","canonical_record":{"source":{"id":"1708.04431","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-08-15T08:37:40Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"bcb05999dffc7591c10a775cb33dcaf73636109d78df9e246ba35187c26fe686","abstract_canon_sha256":"0896502c450346c6d9d849823d4d4a03242888519f841867a2f1c90a85e12de5"},"schema_version":"1.0"},"canonical_sha256":"67b017f1448375a39fa5121f8a117d6ac1eb5cbdc485f990384f60e9965e395f","source":{"kind":"arxiv","id":"1708.04431","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.04431","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"arxiv_version","alias_value":"1708.04431v1","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.04431","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"pith_short_12","alias_value":"M6YBP4KEQN22","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"M6YBP4KEQN22HH5F","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"M6YBP4KE","created_at":"2026-05-18T12:31:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:M6YBP4KEQN22HH5FCIPYUEL5NL","target":"record","payload":{"canonical_record":{"source":{"id":"1708.04431","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-08-15T08:37:40Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"bcb05999dffc7591c10a775cb33dcaf73636109d78df9e246ba35187c26fe686","abstract_canon_sha256":"0896502c450346c6d9d849823d4d4a03242888519f841867a2f1c90a85e12de5"},"schema_version":"1.0"},"canonical_sha256":"67b017f1448375a39fa5121f8a117d6ac1eb5cbdc485f990384f60e9965e395f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:37:59.357764Z","signature_b64":"oMn7Nt16vIHHnYkN7b8ihRs5gpsZ9JKoYKG1lUHZjrJP4/ujpGdEYdXlY3l9965dfSgZIqpM45Dg4znk7gVDAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67b017f1448375a39fa5121f8a117d6ac1eb5cbdc485f990384f60e9965e395f","last_reissued_at":"2026-05-18T00:37:59.357290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:37:59.357290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.04431","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":"2026-05-18T00:37:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LZKx8FXyvrSPVGhxHXHEtnkGXewAA2jN8FtuFSdGNLYTjDyHEIWeYfQMCMjv+Q5wo5lWyJK1ocGOqG5CWFelAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:54:27.499228Z"},"content_sha256":"b60b8594e8e0d6d16a366c046dd125d2eacc24fe933807ee44564af2ca21f8dd","schema_version":"1.0","event_id":"sha256:b60b8594e8e0d6d16a366c046dd125d2eacc24fe933807ee44564af2ca21f8dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:M6YBP4KEQN22HH5FCIPYUEL5NL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coexistence of Systems with Different Multicarrier Waveforms in LSA Communications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Fumihide Kojima, Gabriel Porto Villardi, Kentaro Ishizu, Mirza Golam Kibria","submitted_at":"2017-08-15T08:37:40Z","abstract_excerpt":"We study the coexistence of different multicarrier waveforms such as orthogonal frequency division multiplexing (OFDM), filter-bank multicarrier (FBMC) and universal-filtered multicarrier (UFMC) waveforms in licensed shared access (LSA) for next-generation communication systems. The fundamental changes required in the existing physical layer using OFDM towards a hybrid physical layer (either OFDM-FBMC or OFDM- UFMC) ensuring backward compatibility are discussed. We also perform mutual interference analysis for the coexisting asynchronous systems sharing the LSA frequency band. Be- cause of the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.04431","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":"2026-05-18T00:37:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uo7RE3v35xr/kqtV9bg1h8skWVYd8otYwIBhEgAOH6OtIGtVaw+PwM3j4lgRFBQwAJc+TY5Xy1rHRDaG15UMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:54:27.499837Z"},"content_sha256":"4e627d377d6f6933c2c95466d7c8aef67b4d7f5aeb3f246f889b5e3e7cd97230","schema_version":"1.0","event_id":"sha256:4e627d377d6f6933c2c95466d7c8aef67b4d7f5aeb3f246f889b5e3e7cd97230"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/bundle.json","state_url":"https://pith.science/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/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":"2026-05-30T08:54:27Z","links":{"resolver":"https://pith.science/pith/M6YBP4KEQN22HH5FCIPYUEL5NL","bundle":"https://pith.science/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/bundle.json","state":"https://pith.science/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M6YBP4KEQN22HH5FCIPYUEL5NL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:M6YBP4KEQN22HH5FCIPYUEL5NL","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":"0896502c450346c6d9d849823d4d4a03242888519f841867a2f1c90a85e12de5","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-08-15T08:37:40Z","title_canon_sha256":"bcb05999dffc7591c10a775cb33dcaf73636109d78df9e246ba35187c26fe686"},"schema_version":"1.0","source":{"id":"1708.04431","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.04431","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"arxiv_version","alias_value":"1708.04431v1","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.04431","created_at":"2026-05-18T00:37:59Z"},{"alias_kind":"pith_short_12","alias_value":"M6YBP4KEQN22","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"M6YBP4KEQN22HH5F","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"M6YBP4KE","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:4e627d377d6f6933c2c95466d7c8aef67b4d7f5aeb3f246f889b5e3e7cd97230","target":"graph","created_at":"2026-05-18T00:37:59Z","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":"We study the coexistence of different multicarrier waveforms such as orthogonal frequency division multiplexing (OFDM), filter-bank multicarrier (FBMC) and universal-filtered multicarrier (UFMC) waveforms in licensed shared access (LSA) for next-generation communication systems. The fundamental changes required in the existing physical layer using OFDM towards a hybrid physical layer (either OFDM-FBMC or OFDM- UFMC) ensuring backward compatibility are discussed. We also perform mutual interference analysis for the coexisting asynchronous systems sharing the LSA frequency band. Be- cause of the","authors_text":"Fumihide Kojima, Gabriel Porto Villardi, Kentaro Ishizu, Mirza Golam Kibria","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-08-15T08:37:40Z","title":"Coexistence of Systems with Different Multicarrier Waveforms in LSA Communications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.04431","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:b60b8594e8e0d6d16a366c046dd125d2eacc24fe933807ee44564af2ca21f8dd","target":"record","created_at":"2026-05-18T00:37:59Z","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":"0896502c450346c6d9d849823d4d4a03242888519f841867a2f1c90a85e12de5","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-08-15T08:37:40Z","title_canon_sha256":"bcb05999dffc7591c10a775cb33dcaf73636109d78df9e246ba35187c26fe686"},"schema_version":"1.0","source":{"id":"1708.04431","kind":"arxiv","version":1}},"canonical_sha256":"67b017f1448375a39fa5121f8a117d6ac1eb5cbdc485f990384f60e9965e395f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67b017f1448375a39fa5121f8a117d6ac1eb5cbdc485f990384f60e9965e395f","first_computed_at":"2026-05-18T00:37:59.357290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:37:59.357290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oMn7Nt16vIHHnYkN7b8ihRs5gpsZ9JKoYKG1lUHZjrJP4/ujpGdEYdXlY3l9965dfSgZIqpM45Dg4znk7gVDAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:37:59.357764Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.04431","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b60b8594e8e0d6d16a366c046dd125d2eacc24fe933807ee44564af2ca21f8dd","sha256:4e627d377d6f6933c2c95466d7c8aef67b4d7f5aeb3f246f889b5e3e7cd97230"],"state_sha256":"43047ace42b8f42f0382318bef227190c4c96a1f3991c2b0becfddfe01277249"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WK7hfRCbwAGtHZgYms71Bz/d0yi/8M3GwuCyNU8Ki5YOfJVFsfE9Ig/MJMYfARTrzELGn47jQABlI2Uos3jVAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:54:27.502883Z","bundle_sha256":"57f56a0483e9f4e017b306774a504cf6d3c1c0f9fc6ddfbdca4e4c643fbd8567"}}