{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VW6P3CBBIRNFO5WGEEIWGG3BWP","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":"9a483ce5ba039a55fc4bd61ca050f33af5bd0c4f7fb0a0a7643b7761bae5b0cf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-11-29T13:39:12Z","title_canon_sha256":"363a48859022ad25c218d4417e013d8b0998b8b152ed5241c9528c1843056f92"},"schema_version":"1.0","source":{"id":"1511.09013","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.09013","created_at":"2026-05-18T01:25:45Z"},{"alias_kind":"arxiv_version","alias_value":"1511.09013v1","created_at":"2026-05-18T01:25:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.09013","created_at":"2026-05-18T01:25:45Z"},{"alias_kind":"pith_short_12","alias_value":"VW6P3CBBIRNF","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_16","alias_value":"VW6P3CBBIRNFO5WG","created_at":"2026-05-18T12:29:47Z"},{"alias_kind":"pith_short_8","alias_value":"VW6P3CBB","created_at":"2026-05-18T12:29:47Z"}],"graph_snapshots":[{"event_id":"sha256:4cbf9475d7b5383edfc33fed9aee11a43be351abf5c526c130d3b1d3cdcf8483","target":"graph","created_at":"2026-05-18T01:25:45Z","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 consider the problem of peak-to-average power ratio (PAPR) reduction in orthogonal frequency-division multiplexing (OFDM) based massive multiple-input multiple-output (MIMO) downlink systems. Specifically, given a set of symbol vectors to be transmitted to K users, the problem is to find an OFDM-modulated signal that has a low PAPR and meanwhile enables multiuser interference (MUI) cancellation. Unlike previous works that tackled the problem using convex optimization, we take a Bayesian approach and develop an efficient PAPR reduction method by exploiting the redundant degrees-of-freedom of","authors_text":"Hengyao Bao, Hongbin Li, Jun Fang, Shaoqian Li, Zhi Chen","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-11-29T13:39:12Z","title":"An Efficient Bayesian PAPR Reduction Method for OFDM-Based Massive MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.09013","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:e552946d14b7cb2f92dcc09b12b16baa1df2570db87db342ffcbaf1aca5e3ab0","target":"record","created_at":"2026-05-18T01:25:45Z","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":"9a483ce5ba039a55fc4bd61ca050f33af5bd0c4f7fb0a0a7643b7761bae5b0cf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-11-29T13:39:12Z","title_canon_sha256":"363a48859022ad25c218d4417e013d8b0998b8b152ed5241c9528c1843056f92"},"schema_version":"1.0","source":{"id":"1511.09013","kind":"arxiv","version":1}},"canonical_sha256":"adbcfd8821445a5776c62111631b61b3c1c96d04c13f517b76a57d0e40ec85af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adbcfd8821445a5776c62111631b61b3c1c96d04c13f517b76a57d0e40ec85af","first_computed_at":"2026-05-18T01:25:45.854494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:45.854494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qfTBhrrz2DVqXHyqk3OidNjHhG55yFfhO1sHcBlIW5hRSDobaDes0bFc68sKbInm1RWkC05bfJGnE/vKr4MIAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:45.854931Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.09013","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e552946d14b7cb2f92dcc09b12b16baa1df2570db87db342ffcbaf1aca5e3ab0","sha256:4cbf9475d7b5383edfc33fed9aee11a43be351abf5c526c130d3b1d3cdcf8483"],"state_sha256":"9e021b93731ec4fedafad7ec95fcad96f81dc33c4527f89086c76bb3c2eda5d1"}