{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DHV2VXOZD7F5ZCNC4L5HT4O4RA","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":"01662708096f1a28415896de1d9d99a6b64ac3af38b5da65a938155cfa7ddc10","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-01-27T05:10:38Z","title_canon_sha256":"b6ee467a1beca95b16ee21894dd7256f7a2a44a2c7901e1f594d4593d4c42943"},"schema_version":"1.0","source":{"id":"1901.09318","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.09318","created_at":"2026-05-17T23:55:25Z"},{"alias_kind":"arxiv_version","alias_value":"1901.09318v1","created_at":"2026-05-17T23:55:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.09318","created_at":"2026-05-17T23:55:25Z"},{"alias_kind":"pith_short_12","alias_value":"DHV2VXOZD7F5","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DHV2VXOZD7F5ZCNC","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DHV2VXOZ","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:87fa2b73e00f633d745fbc8974498b67ac11cbd70e6190caf78a4d279b1cbf9a","target":"graph","created_at":"2026-05-17T23:55:25Z","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":"This paper investigates generic signal shaping methods for multiple-data-stream generalized spatial modulation (GenSM) and generalized quadrature spatial modulation (GenQSM) based on the maximizing the minimum Euclidean distance (MMED) criterion. Three cases with different channel state information at the transmitter (CSIT) are considered, including no CSIT, statistical CSIT and perfect CSIT. A unified optimization problem is formulated to find the optimal transmit vector set under size, power and sparsity constraints. We propose an optimization-based signal shaping (OBSS) approach by solving ","authors_text":"Haixia Zhang, Liang Cong, Mohamed-Slim Alouini, Peng Zhang, Shuaishuai Guo, Shuping Dang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-01-27T05:10:38Z","title":"Signal Shaping for Generalized Spatial Modulation and Generalized Quadrature Spatial Modulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09318","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":"sha256:50d64139a1991f0a1db8ab943babe901fe41c794c595d05ee1d860ae442d5147","target":"record","created_at":"2026-05-17T23:55:25Z","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":"01662708096f1a28415896de1d9d99a6b64ac3af38b5da65a938155cfa7ddc10","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-01-27T05:10:38Z","title_canon_sha256":"b6ee467a1beca95b16ee21894dd7256f7a2a44a2c7901e1f594d4593d4c42943"},"schema_version":"1.0","source":{"id":"1901.09318","kind":"arxiv","version":1}},"canonical_sha256":"19ebaaddd91fcbdc89a2e2fa79f1dc880742a02b8d4833e2420da16f86100556","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19ebaaddd91fcbdc89a2e2fa79f1dc880742a02b8d4833e2420da16f86100556","first_computed_at":"2026-05-17T23:55:25.126072Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:55:25.126072Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"erFG2swVxI9cTPzDDx/1MIota1uD1N6BmMRnviknIEGCNWFty7x1NfT5/6VRSHNyv5nnXkFgGUIp+kgUmMTPBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:55:25.126571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.09318","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:50d64139a1991f0a1db8ab943babe901fe41c794c595d05ee1d860ae442d5147","sha256:87fa2b73e00f633d745fbc8974498b67ac11cbd70e6190caf78a4d279b1cbf9a"],"state_sha256":"b87344ac3047c8654e7b0feddcc92dbe092725146f3fc3cccabd43182152a485"}