{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VYHJWHA4T3LFEQSVFCYAVTPK6M","short_pith_number":"pith:VYHJWHA4","canonical_record":{"source":{"id":"2005.02308","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-05-05T16:12:20Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"813bf2a199505f2f7130d1fdf507393dc6d71118c1f293e6644345dbbb58ba2a","abstract_canon_sha256":"222eede45ac6e805ef9fa8c5472b069bfe4db21adc11f7e983dc12295a102221"},"schema_version":"1.0"},"canonical_sha256":"ae0e9b1c1c9ed652425528b00acdeaf3327463d29a2765905fe3efb564b5cc4e","source":{"kind":"arxiv","id":"2005.02308","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.02308","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"arxiv_version","alias_value":"2005.02308v2","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.02308","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_12","alias_value":"VYHJWHA4T3LF","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_16","alias_value":"VYHJWHA4T3LFEQSV","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_8","alias_value":"VYHJWHA4","created_at":"2026-07-05T02:06:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VYHJWHA4T3LFEQSVFCYAVTPK6M","target":"record","payload":{"canonical_record":{"source":{"id":"2005.02308","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-05-05T16:12:20Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"813bf2a199505f2f7130d1fdf507393dc6d71118c1f293e6644345dbbb58ba2a","abstract_canon_sha256":"222eede45ac6e805ef9fa8c5472b069bfe4db21adc11f7e983dc12295a102221"},"schema_version":"1.0"},"canonical_sha256":"ae0e9b1c1c9ed652425528b00acdeaf3327463d29a2765905fe3efb564b5cc4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:06:49.654733Z","signature_b64":"F6b6SsD5aQd1YatRbNvb6IWXp5TGkvrmsBYmgObqKtZVHVJMXeQqTc3drK/4IO5PmJky250bMNvjx5OWtaHTCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ae0e9b1c1c9ed652425528b00acdeaf3327463d29a2765905fe3efb564b5cc4e","last_reissued_at":"2026-07-05T02:06:49.654368Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:06:49.654368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.02308","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":"2026-07-05T02:06:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gPpL1+Fpl6L/HN82viQjB0LZm4ab+fxGwa+L7LjxCAeWXnxLvgvJrzitTtUUxsHikcD7g1Ix8QaGZmGYL/pUDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:11:55.685397Z"},"content_sha256":"1d21cdc2aaa11a21f90609c3602d7e27c65904269d8764629415fe6d2d506c50","schema_version":"1.0","event_id":"sha256:1d21cdc2aaa11a21f90609c3602d7e27c65904269d8764629415fe6d2d506c50"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VYHJWHA4T3LFEQSVFCYAVTPK6M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precoder Design and Statistical Power Allocation for MIMO-NOMA via User-Assisted Simultaneous Diagonalization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Aravindh Krishnamoorthy, Robert Schober, Zhiguo Ding","submitted_at":"2020-05-05T16:12:20Z","abstract_excerpt":"In this paper, we investigate the downlink precoder design for two-user power-domain multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA). We propose a novel user-assisted (UA) simultaneous diagonalization (SD) based MIMO-NOMA scheme that achieves SD of the MIMO channels of both users through a combination of precoder design and low-complexity self-interference cancellation at the users, thereby considerably lowering the overall decoding complexity compared to joint decoding. The achievable ergodic user rates of the proposed scheme are analyzed for Rayleigh fading channe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.02308","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/2005.02308/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:06:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/oSzaOYPP0N/5dII7t5h0XtDtue9+B9SiKb6d2tDf+nTsTLgRSQbhvaChntCIcD+aL+G3nVyOtm2vXezCrxSCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:11:55.685774Z"},"content_sha256":"a548f4fede687f382a6801803f1eeb67492c9d91d923f1ce1071a48defd3756f","schema_version":"1.0","event_id":"sha256:a548f4fede687f382a6801803f1eeb67492c9d91d923f1ce1071a48defd3756f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/bundle.json","state_url":"https://pith.science/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/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":"2026-07-07T04:11:55Z","links":{"resolver":"https://pith.science/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M","bundle":"https://pith.science/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/bundle.json","state":"https://pith.science/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VYHJWHA4T3LFEQSVFCYAVTPK6M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VYHJWHA4T3LFEQSVFCYAVTPK6M","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":"222eede45ac6e805ef9fa8c5472b069bfe4db21adc11f7e983dc12295a102221","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-05-05T16:12:20Z","title_canon_sha256":"813bf2a199505f2f7130d1fdf507393dc6d71118c1f293e6644345dbbb58ba2a"},"schema_version":"1.0","source":{"id":"2005.02308","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.02308","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"arxiv_version","alias_value":"2005.02308v2","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.02308","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_12","alias_value":"VYHJWHA4T3LF","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_16","alias_value":"VYHJWHA4T3LFEQSV","created_at":"2026-07-05T02:06:49Z"},{"alias_kind":"pith_short_8","alias_value":"VYHJWHA4","created_at":"2026-07-05T02:06:49Z"}],"graph_snapshots":[{"event_id":"sha256:a548f4fede687f382a6801803f1eeb67492c9d91d923f1ce1071a48defd3756f","target":"graph","created_at":"2026-07-05T02:06:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2005.02308/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we investigate the downlink precoder design for two-user power-domain multiple-input multiple-output (MIMO) non-orthogonal multiple access (NOMA). We propose a novel user-assisted (UA) simultaneous diagonalization (SD) based MIMO-NOMA scheme that achieves SD of the MIMO channels of both users through a combination of precoder design and low-complexity self-interference cancellation at the users, thereby considerably lowering the overall decoding complexity compared to joint decoding. The achievable ergodic user rates of the proposed scheme are analyzed for Rayleigh fading channe","authors_text":"Aravindh Krishnamoorthy, Robert Schober, Zhiguo Ding","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-05-05T16:12:20Z","title":"Precoder Design and Statistical Power Allocation for MIMO-NOMA via User-Assisted Simultaneous Diagonalization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.02308","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":"sha256:1d21cdc2aaa11a21f90609c3602d7e27c65904269d8764629415fe6d2d506c50","target":"record","created_at":"2026-07-05T02:06:49Z","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":"222eede45ac6e805ef9fa8c5472b069bfe4db21adc11f7e983dc12295a102221","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-05-05T16:12:20Z","title_canon_sha256":"813bf2a199505f2f7130d1fdf507393dc6d71118c1f293e6644345dbbb58ba2a"},"schema_version":"1.0","source":{"id":"2005.02308","kind":"arxiv","version":2}},"canonical_sha256":"ae0e9b1c1c9ed652425528b00acdeaf3327463d29a2765905fe3efb564b5cc4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae0e9b1c1c9ed652425528b00acdeaf3327463d29a2765905fe3efb564b5cc4e","first_computed_at":"2026-07-05T02:06:49.654368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:06:49.654368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F6b6SsD5aQd1YatRbNvb6IWXp5TGkvrmsBYmgObqKtZVHVJMXeQqTc3drK/4IO5PmJky250bMNvjx5OWtaHTCA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:06:49.654733Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.02308","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1d21cdc2aaa11a21f90609c3602d7e27c65904269d8764629415fe6d2d506c50","sha256:a548f4fede687f382a6801803f1eeb67492c9d91d923f1ce1071a48defd3756f"],"state_sha256":"d11361daf91c30caee100ff818dfb9ae864377a511a3b1edaf7f89ff10b37666"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XER0tO3+yKTO0B2sA91oaV7hwxyCV0ekRH0UmkFXPBgWLosTv2+i8jwaUHCv81aWP4bpYjsORTPMF/YFd9WJDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:11:55.688588Z","bundle_sha256":"823b2452d1ea03fa56ea130deec25dfe6ecf3f39b51fa6be28080ae7c3dd0606"}}