{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NJBP5HETSKBYYEN3DO7AQ45RWB","short_pith_number":"pith:NJBP5HET","canonical_record":{"source":{"id":"1803.03169","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-08T15:48:36Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"6ef795f99d0d00f54987de71ff4646c8e87d132aa65a5aea0cff1e99f77794fd","abstract_canon_sha256":"5eadaa953fb0eb73bc022b2ebc10ab21e3e8f023fd02d0086b34fc99b8c947e1"},"schema_version":"1.0"},"canonical_sha256":"6a42fe9c9392838c11bb1bbe0873b1b0539997f1ce7f1d2823bd1631e912c924","source":{"kind":"arxiv","id":"1803.03169","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03169","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03169v1","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03169","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"pith_short_12","alias_value":"NJBP5HETSKBY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NJBP5HETSKBYYEN3","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NJBP5HET","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NJBP5HETSKBYYEN3DO7AQ45RWB","target":"record","payload":{"canonical_record":{"source":{"id":"1803.03169","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-08T15:48:36Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"6ef795f99d0d00f54987de71ff4646c8e87d132aa65a5aea0cff1e99f77794fd","abstract_canon_sha256":"5eadaa953fb0eb73bc022b2ebc10ab21e3e8f023fd02d0086b34fc99b8c947e1"},"schema_version":"1.0"},"canonical_sha256":"6a42fe9c9392838c11bb1bbe0873b1b0539997f1ce7f1d2823bd1631e912c924","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:44.246999Z","signature_b64":"lWY9GmG7or3f+GncmqEG5kLLDyIFm9Jw1FGCSCbGIi2KfnOjyFIT7z1OGbgLVp+CNEnaYXlLSkncBD943ue4Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a42fe9c9392838c11bb1bbe0873b1b0539997f1ce7f1d2823bd1631e912c924","last_reissued_at":"2026-05-18T00:21:44.246295Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:44.246295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.03169","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":"2026-05-18T00:21:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0RADApa5Gcd7p3YLSzLJQsXwWB3rKwWmf6y7hX7scEj5esVC6VkUzaU3exMIttDQq+in0M6hSLZroO6JE0/MCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:21:16.612843Z"},"content_sha256":"beed7f202f77050d9cadce79e44bdd3f28ac6f284c424e5154613ecab27df1dc","schema_version":"1.0","event_id":"sha256:beed7f202f77050d9cadce79e44bdd3f28ac6f284c424e5154613ecab27df1dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NJBP5HETSKBYYEN3DO7AQ45RWB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Enabling Waveform for 5G - QAM-FBMC: Initial Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Mohammed Al-Imari, Yinan Qi","submitted_at":"2018-03-08T15:48:36Z","abstract_excerpt":"In this paper, we identified the challenges and requirements for the waveform design of the fifth generation mobile communication networks (5G) and compared Orthogonal frequency-division multiplexing (OFDM) based waveforms with Filter Bank Multicarrier (FBMC) based ones. Recently it has been shown that Quadrature-Amplitude Modulation (QAM) transmission and reception can be enabled in FBMC by using multiple prototype filters, resulting in a new waveform: QAM-FBMC. Here, the transceiver architecture and signal model of QAM-FBMC are presented and channel estimation error and RF impairment, e.g., "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03169","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":"2026-05-18T00:21:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N0h2lFB0U6k5riGdymOxsMB8F2ZfBLV+K8zKF1aUjjvmdwogIg1mwn1fNErLUgEaDm/fDYCsIWQ/7SvCIHLBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:21:16.613587Z"},"content_sha256":"78c79da99818577c62e3ba63d0ee83c29ee0edf89ddffc2f7a76a9e79701230c","schema_version":"1.0","event_id":"sha256:78c79da99818577c62e3ba63d0ee83c29ee0edf89ddffc2f7a76a9e79701230c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/bundle.json","state_url":"https://pith.science/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/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":"2026-06-09T19:21:16Z","links":{"resolver":"https://pith.science/pith/NJBP5HETSKBYYEN3DO7AQ45RWB","bundle":"https://pith.science/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/bundle.json","state":"https://pith.science/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NJBP5HETSKBYYEN3DO7AQ45RWB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NJBP5HETSKBYYEN3DO7AQ45RWB","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":"5eadaa953fb0eb73bc022b2ebc10ab21e3e8f023fd02d0086b34fc99b8c947e1","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-08T15:48:36Z","title_canon_sha256":"6ef795f99d0d00f54987de71ff4646c8e87d132aa65a5aea0cff1e99f77794fd"},"schema_version":"1.0","source":{"id":"1803.03169","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.03169","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"arxiv_version","alias_value":"1803.03169v1","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.03169","created_at":"2026-05-18T00:21:44Z"},{"alias_kind":"pith_short_12","alias_value":"NJBP5HETSKBY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NJBP5HETSKBYYEN3","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NJBP5HET","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:78c79da99818577c62e3ba63d0ee83c29ee0edf89ddffc2f7a76a9e79701230c","target":"graph","created_at":"2026-05-18T00:21:44Z","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 identified the challenges and requirements for the waveform design of the fifth generation mobile communication networks (5G) and compared Orthogonal frequency-division multiplexing (OFDM) based waveforms with Filter Bank Multicarrier (FBMC) based ones. Recently it has been shown that Quadrature-Amplitude Modulation (QAM) transmission and reception can be enabled in FBMC by using multiple prototype filters, resulting in a new waveform: QAM-FBMC. Here, the transceiver architecture and signal model of QAM-FBMC are presented and channel estimation error and RF impairment, e.g., ","authors_text":"Mohammed Al-Imari, Yinan Qi","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-08T15:48:36Z","title":"An Enabling Waveform for 5G - QAM-FBMC: Initial Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.03169","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:beed7f202f77050d9cadce79e44bdd3f28ac6f284c424e5154613ecab27df1dc","target":"record","created_at":"2026-05-18T00:21:44Z","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":"5eadaa953fb0eb73bc022b2ebc10ab21e3e8f023fd02d0086b34fc99b8c947e1","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-08T15:48:36Z","title_canon_sha256":"6ef795f99d0d00f54987de71ff4646c8e87d132aa65a5aea0cff1e99f77794fd"},"schema_version":"1.0","source":{"id":"1803.03169","kind":"arxiv","version":1}},"canonical_sha256":"6a42fe9c9392838c11bb1bbe0873b1b0539997f1ce7f1d2823bd1631e912c924","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a42fe9c9392838c11bb1bbe0873b1b0539997f1ce7f1d2823bd1631e912c924","first_computed_at":"2026-05-18T00:21:44.246295Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:44.246295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lWY9GmG7or3f+GncmqEG5kLLDyIFm9Jw1FGCSCbGIi2KfnOjyFIT7z1OGbgLVp+CNEnaYXlLSkncBD943ue4Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:44.246999Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.03169","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:beed7f202f77050d9cadce79e44bdd3f28ac6f284c424e5154613ecab27df1dc","sha256:78c79da99818577c62e3ba63d0ee83c29ee0edf89ddffc2f7a76a9e79701230c"],"state_sha256":"caf3a58b6e9d79679eb4b83a0fddff879e8ff1883c19b4a4e9c59dff4176cc21"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tbu6QhAAYx8JweVekIStynSHvMNzR6ITRjxBJwHdhEv/MMMklVDnUnHbFfKoyhZQgXXVS3s/0IAWS912Y/h+Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T19:21:16.617915Z","bundle_sha256":"099ac414844de730b9bd6d87f7a0a7750aeb13b725347d3ed0047781020705a9"}}