{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:NJRXW35ABYPPAXH3VXIXZWISNI","short_pith_number":"pith:NJRXW35A","schema_version":"1.0","canonical_sha256":"6a637b6fa00e1ef05cfbadd17cd9126a05a75624fe260811784f1005fb1dc1a7","source":{"kind":"arxiv","id":"1908.03133","version":2},"attestation_state":"computed","paper":{"title":"Demystifying the Power Scaling Law of Intelligent Reflecting Surfaces and Metasurfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Emil Bj\\\"ornson, Luca Sanguinetti","submitted_at":"2019-08-08T15:46:34Z","abstract_excerpt":"Intelligent reflecting surfaces (IRSs) have recently attracted the attention of communication theorists as a means to control the wireless propagation channel. It has been shown that the signal-to-noise ratio (SNR) of a single-user IRS-aided transmission increases as $N^2$, with $N$ being the number of passive reflecting elements in the IRS. This has been interpreted as a major potential advantage of using IRSs, instead of conventional Massive MIMO (mMIMO) whose SNR scales only linearly in $N$. This paper shows that this interpretation is incorrect. We first prove analytically that mMIMO alway"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1908.03133","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-08T15:46:34Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"748991180b05b2dd0436af021d24c48ab232505ceb0efc800ef49520cb21ed47","abstract_canon_sha256":"779f25d042c006c4c7d79741ca8f17c87d443f7c5aa3b7b4b16344e92fe32dfb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:18:09.549228Z","signature_b64":"yM6Du/OMzbYacNeQmuNxjKAnlmjxYA8dC3N1Tx99P9Ecv7o2kgce40meIdNxSIZIAL+TP5ihHF2jxui6L0J9BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a637b6fa00e1ef05cfbadd17cd9126a05a75624fe260811784f1005fb1dc1a7","last_reissued_at":"2026-07-05T00:18:09.548837Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:18:09.548837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Demystifying the Power Scaling Law of Intelligent Reflecting Surfaces and Metasurfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Emil Bj\\\"ornson, Luca Sanguinetti","submitted_at":"2019-08-08T15:46:34Z","abstract_excerpt":"Intelligent reflecting surfaces (IRSs) have recently attracted the attention of communication theorists as a means to control the wireless propagation channel. It has been shown that the signal-to-noise ratio (SNR) of a single-user IRS-aided transmission increases as $N^2$, with $N$ being the number of passive reflecting elements in the IRS. This has been interpreted as a major potential advantage of using IRSs, instead of conventional Massive MIMO (mMIMO) whose SNR scales only linearly in $N$. This paper shows that this interpretation is incorrect. We first prove analytically that mMIMO alway"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.03133","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.03133/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1908.03133","created_at":"2026-07-05T00:18:09.548891+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.03133v2","created_at":"2026-07-05T00:18:09.548891+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.03133","created_at":"2026-07-05T00:18:09.548891+00:00"},{"alias_kind":"pith_short_12","alias_value":"NJRXW35ABYPP","created_at":"2026-07-05T00:18:09.548891+00:00"},{"alias_kind":"pith_short_16","alias_value":"NJRXW35ABYPPAXH3","created_at":"2026-07-05T00:18:09.548891+00:00"},{"alias_kind":"pith_short_8","alias_value":"NJRXW35A","created_at":"2026-07-05T00:18:09.548891+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1908.03133","citing_title":"Demystifying the Power Scaling Law of Intelligent Reflecting Surfaces and Metasurfaces","ref_index":2,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI","json":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI.json","graph_json":"https://pith.science/api/pith-number/NJRXW35ABYPPAXH3VXIXZWISNI/graph.json","events_json":"https://pith.science/api/pith-number/NJRXW35ABYPPAXH3VXIXZWISNI/events.json","paper":"https://pith.science/paper/NJRXW35A"},"agent_actions":{"view_html":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI","download_json":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI.json","view_paper":"https://pith.science/paper/NJRXW35A","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.03133&json=true","fetch_graph":"https://pith.science/api/pith-number/NJRXW35ABYPPAXH3VXIXZWISNI/graph.json","fetch_events":"https://pith.science/api/pith-number/NJRXW35ABYPPAXH3VXIXZWISNI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI/action/storage_attestation","attest_author":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI/action/author_attestation","sign_citation":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI/action/citation_signature","submit_replication":"https://pith.science/pith/NJRXW35ABYPPAXH3VXIXZWISNI/action/replication_record"}},"created_at":"2026-07-05T00:18:09.548891+00:00","updated_at":"2026-07-05T00:18:09.548891+00:00"}