{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZIJHCFKW4T2DRHFNWOK2WUIPNE","short_pith_number":"pith:ZIJHCFKW","canonical_record":{"source":{"id":"1802.05148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-02-14T15:16:23Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6180dd4e9f1ddb6a340dfaee7217c8f13c00e52ec7aedee7f9e5d8fb8dc0f758","abstract_canon_sha256":"397de273df08704b78fd3add6f9270bc0f6b0888431ddcfc8106c424a2a1a018"},"schema_version":"1.0"},"canonical_sha256":"ca12711556e4f4389cadb395ab510f692b862d83d1ed4d95ec3d67298fb901e9","source":{"kind":"arxiv","id":"1802.05148","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.05148","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"1802.05148v2","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05148","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZIJHCFKW4T2D","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZIJHCFKW4T2DRHFN","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZIJHCFKW","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZIJHCFKW4T2DRHFNWOK2WUIPNE","target":"record","payload":{"canonical_record":{"source":{"id":"1802.05148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-02-14T15:16:23Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6180dd4e9f1ddb6a340dfaee7217c8f13c00e52ec7aedee7f9e5d8fb8dc0f758","abstract_canon_sha256":"397de273df08704b78fd3add6f9270bc0f6b0888431ddcfc8106c424a2a1a018"},"schema_version":"1.0"},"canonical_sha256":"ca12711556e4f4389cadb395ab510f692b862d83d1ed4d95ec3d67298fb901e9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:23:04.609126Z","signature_b64":"0wdnr1dL/MULxY3u74daZQLXKfkIEijTe7C8ut4QkZFJCfEdSHZTHJJnbNFjUR9fv0y5T0bltJBmWvnGDHD+BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca12711556e4f4389cadb395ab510f692b862d83d1ed4d95ec3d67298fb901e9","last_reissued_at":"2026-05-18T00:23:04.608391Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:23:04.608391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.05148","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NX7ksz8NQbk9VJ/pfDz6+1AxvwzcJtB5Ox+ZreC5PSTLiIBO4XVuAzYn2W9KB+BwAce/XEwYgE/oGVcOl9XbAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:18:10.706524Z"},"content_sha256":"73f82f77aaf133b94a7552417ab6ce2ccf9be3485fa3cd80d5ea2be900eb62bc","schema_version":"1.0","event_id":"sha256:73f82f77aaf133b94a7552417ab6ce2ccf9be3485fa3cd80d5ea2be900eb62bc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZIJHCFKW4T2DRHFNWOK2WUIPNE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stepwise Transmit Antenna Selection in Downlink Massive Multiuser MIMO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Ali Bereyhi, Ralf R. M\\\"uller, Saba Asaad","submitted_at":"2018-02-14T15:16:23Z","abstract_excerpt":"Due to the large power consumption in RF-circuitry of massive MIMO systems, practically relevant performance measures such as energy efficiency or bandwidth efficiency are neither necessarily monotonous functions of the total transmit power nor the number of active antennas. Optimal antenna selection is however computationally infeasible in these systems. In this paper, we propose an iterative algorithm to optimize the transmit power and the subset of selected antennas subject to non-monotonous performance measures in massive multiuser MIMO settings. Numerical results are given for energy effi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05148","kind":"arxiv","version":2},"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":"2026-05-18T00:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MLEzwz1659m+uDX0CWJjfWILioqRu3xpHYwrJvr/boNESam3OAeRrbCs36CYeUMKm3kD8soLfm+KP0v61yIHBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:18:10.707196Z"},"content_sha256":"601ec21911d98154e0279784eb9a006d1c2a5082d6a275a598a270908ce2fd06","schema_version":"1.0","event_id":"sha256:601ec21911d98154e0279784eb9a006d1c2a5082d6a275a598a270908ce2fd06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/bundle.json","state_url":"https://pith.science/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/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":"2026-05-27T11:18:10Z","links":{"resolver":"https://pith.science/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE","bundle":"https://pith.science/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/bundle.json","state":"https://pith.science/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZIJHCFKW4T2DRHFNWOK2WUIPNE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZIJHCFKW4T2DRHFNWOK2WUIPNE","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":"397de273df08704b78fd3add6f9270bc0f6b0888431ddcfc8106c424a2a1a018","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-02-14T15:16:23Z","title_canon_sha256":"6180dd4e9f1ddb6a340dfaee7217c8f13c00e52ec7aedee7f9e5d8fb8dc0f758"},"schema_version":"1.0","source":{"id":"1802.05148","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.05148","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"1802.05148v2","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05148","created_at":"2026-05-18T00:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZIJHCFKW4T2D","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZIJHCFKW4T2DRHFN","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZIJHCFKW","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:601ec21911d98154e0279784eb9a006d1c2a5082d6a275a598a270908ce2fd06","target":"graph","created_at":"2026-05-18T00:23:04Z","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":"Due to the large power consumption in RF-circuitry of massive MIMO systems, practically relevant performance measures such as energy efficiency or bandwidth efficiency are neither necessarily monotonous functions of the total transmit power nor the number of active antennas. Optimal antenna selection is however computationally infeasible in these systems. In this paper, we propose an iterative algorithm to optimize the transmit power and the subset of selected antennas subject to non-monotonous performance measures in massive multiuser MIMO settings. Numerical results are given for energy effi","authors_text":"Ali Bereyhi, Ralf R. M\\\"uller, Saba Asaad","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-02-14T15:16:23Z","title":"Stepwise Transmit Antenna Selection in Downlink Massive Multiuser MIMO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05148","kind":"arxiv","version":2},"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":"sha256:73f82f77aaf133b94a7552417ab6ce2ccf9be3485fa3cd80d5ea2be900eb62bc","target":"record","created_at":"2026-05-18T00:23:04Z","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":"397de273df08704b78fd3add6f9270bc0f6b0888431ddcfc8106c424a2a1a018","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-02-14T15:16:23Z","title_canon_sha256":"6180dd4e9f1ddb6a340dfaee7217c8f13c00e52ec7aedee7f9e5d8fb8dc0f758"},"schema_version":"1.0","source":{"id":"1802.05148","kind":"arxiv","version":2}},"canonical_sha256":"ca12711556e4f4389cadb395ab510f692b862d83d1ed4d95ec3d67298fb901e9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca12711556e4f4389cadb395ab510f692b862d83d1ed4d95ec3d67298fb901e9","first_computed_at":"2026-05-18T00:23:04.608391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:23:04.608391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0wdnr1dL/MULxY3u74daZQLXKfkIEijTe7C8ut4QkZFJCfEdSHZTHJJnbNFjUR9fv0y5T0bltJBmWvnGDHD+BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:23:04.609126Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.05148","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73f82f77aaf133b94a7552417ab6ce2ccf9be3485fa3cd80d5ea2be900eb62bc","sha256:601ec21911d98154e0279784eb9a006d1c2a5082d6a275a598a270908ce2fd06"],"state_sha256":"a4d18f10c93ca06daf60403eab95b2a47405b3c2f4ce869f78c41d712a8a3c73"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MKizeEc+EaeuUv73qeuFBdjPMT8N3UCjU60uSCK3ZO/TsUDbZMwQnZoHLgJ3GNW0Wv7qL1zluIqS0+JoCw+FBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T11:18:10.710991Z","bundle_sha256":"7b278fcfd58a52eeb1e218b207987e5ca5896f838b89c941f7200dd840a7d69a"}}