{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:WUTVHVIP5RHP4BXU6AKWZQHNXX","short_pith_number":"pith:WUTVHVIP","schema_version":"1.0","canonical_sha256":"b52753d50fec4efe06f4f0156cc0edbdc057e00a9ece6d49e8001899ddbc16ad","source":{"kind":"arxiv","id":"1709.00370","version":1},"attestation_state":"computed","paper":{"title":"Spatial-Mode Diversity and Multiplexing for FSO Communication with Direct Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Gilda Raoof Mehrpoor, Majid Safari, Shenjie Huang","submitted_at":"2017-09-01T15:43:04Z","abstract_excerpt":"This work investigates spatial-mode multiplexing (SMM) for practical free-space optical communication (FSO) systems using direct detection. Unlike several works in the literature where mutually incoherent channels are assumed, we consider mutually coherent channels that accurately describe SMM FSO systems employing a single laser source at the transmitter with a narrow linewidth. We develop an analytical model for such mutually coherent channels and derive expressions for aggregate achievable rate (AAR). Through numerical simulations, it was shown that there exist optimal transmit mode sets wh"},"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":"1709.00370","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-01T15:43:04Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"15089a79f18bc467fee0169c08e7df49b4b5c0aa11cdce953279380674c39b7c","abstract_canon_sha256":"e4994c919b926d98ba9aec7fc2db30b2e9ed59e5c3101a0f8cde0ce950e1c88f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:25:34.031920Z","signature_b64":"WjmCqcTeF3PLya+h8JpRF1UBCWKZ1PGQlWb50GAfkpX4f9w9aJPWT/g62AnZEWKUbnzUbXELNp0ClpMnkyahBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b52753d50fec4efe06f4f0156cc0edbdc057e00a9ece6d49e8001899ddbc16ad","last_reissued_at":"2026-05-18T00:25:34.031239Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:25:34.031239Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spatial-Mode Diversity and Multiplexing for FSO Communication with Direct Detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Gilda Raoof Mehrpoor, Majid Safari, Shenjie Huang","submitted_at":"2017-09-01T15:43:04Z","abstract_excerpt":"This work investigates spatial-mode multiplexing (SMM) for practical free-space optical communication (FSO) systems using direct detection. Unlike several works in the literature where mutually incoherent channels are assumed, we consider mutually coherent channels that accurately describe SMM FSO systems employing a single laser source at the transmitter with a narrow linewidth. We develop an analytical model for such mutually coherent channels and derive expressions for aggregate achievable rate (AAR). Through numerical simulations, it was shown that there exist optimal transmit mode sets wh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.00370","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1709.00370","created_at":"2026-05-18T00:25:34.031342+00:00"},{"alias_kind":"arxiv_version","alias_value":"1709.00370v1","created_at":"2026-05-18T00:25:34.031342+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.00370","created_at":"2026-05-18T00:25:34.031342+00:00"},{"alias_kind":"pith_short_12","alias_value":"WUTVHVIP5RHP","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_16","alias_value":"WUTVHVIP5RHP4BXU","created_at":"2026-05-18T12:31:53.515858+00:00"},{"alias_kind":"pith_short_8","alias_value":"WUTVHVIP","created_at":"2026-05-18T12:31:53.515858+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX","json":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX.json","graph_json":"https://pith.science/api/pith-number/WUTVHVIP5RHP4BXU6AKWZQHNXX/graph.json","events_json":"https://pith.science/api/pith-number/WUTVHVIP5RHP4BXU6AKWZQHNXX/events.json","paper":"https://pith.science/paper/WUTVHVIP"},"agent_actions":{"view_html":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX","download_json":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX.json","view_paper":"https://pith.science/paper/WUTVHVIP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1709.00370&json=true","fetch_graph":"https://pith.science/api/pith-number/WUTVHVIP5RHP4BXU6AKWZQHNXX/graph.json","fetch_events":"https://pith.science/api/pith-number/WUTVHVIP5RHP4BXU6AKWZQHNXX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX/action/storage_attestation","attest_author":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX/action/author_attestation","sign_citation":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX/action/citation_signature","submit_replication":"https://pith.science/pith/WUTVHVIP5RHP4BXU6AKWZQHNXX/action/replication_record"}},"created_at":"2026-05-18T00:25:34.031342+00:00","updated_at":"2026-05-18T00:25:34.031342+00:00"}