{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZYF4A3AYHBJJRORX4MITO5TZ7M","short_pith_number":"pith:ZYF4A3AY","canonical_record":{"source":{"id":"2009.11907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-24T19:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"fbc5636f7b0300b6ff8389a5abf49d2f5c9d9a10e4facbec2a34a0daff7939c1","abstract_canon_sha256":"28a2e33425430a1614445ce2ca49ddc19d0de4ee839c629bd30313c6370b9fdc"},"schema_version":"1.0"},"canonical_sha256":"ce0bc06c18385298ba37e311377679fb37a28f1f97716001cea882ad6f3dfe56","source":{"kind":"arxiv","id":"2009.11907","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.11907","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"arxiv_version","alias_value":"2009.11907v1","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.11907","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_12","alias_value":"ZYF4A3AYHBJJ","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_16","alias_value":"ZYF4A3AYHBJJRORX","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_8","alias_value":"ZYF4A3AY","created_at":"2026-07-05T01:59:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZYF4A3AYHBJJRORX4MITO5TZ7M","target":"record","payload":{"canonical_record":{"source":{"id":"2009.11907","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-24T19:04:05Z","cross_cats_sorted":[],"title_canon_sha256":"fbc5636f7b0300b6ff8389a5abf49d2f5c9d9a10e4facbec2a34a0daff7939c1","abstract_canon_sha256":"28a2e33425430a1614445ce2ca49ddc19d0de4ee839c629bd30313c6370b9fdc"},"schema_version":"1.0"},"canonical_sha256":"ce0bc06c18385298ba37e311377679fb37a28f1f97716001cea882ad6f3dfe56","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:59:58.538837Z","signature_b64":"gjB9P5oT5EyOjRpjnbnryxjLGjesqock/LXZvCjk44xds1KFEPhr0jZlPVORUMPeh0xGacqjClZnX7SBqF9pDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce0bc06c18385298ba37e311377679fb37a28f1f97716001cea882ad6f3dfe56","last_reissued_at":"2026-07-05T01:59:58.538414Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:59:58.538414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.11907","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:59:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H90cUaT6LsE1aR0YRW+Mx/jDGFGM7TZD1YpH3JY9pqFaSoLvmeBd/fpDjXMJT9aztnSpSE1Yp6ZyihAT+esRBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:15:23.011748Z"},"content_sha256":"4f55c45e721932a494c46721c69757404434ff58165a3ee746c325e14f3cab0e","schema_version":"1.0","event_id":"sha256:4f55c45e721932a494c46721c69757404434ff58165a3ee746c325e14f3cab0e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZYF4A3AYHBJJRORX4MITO5TZ7M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Neural Network-Based Ranging with LTE Channel Impulse Response for Localization in Indoor Environments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Ali A. Abdallah, Halim Lee, Jiwon Seo, Jongmin Park, Zaher M. Kassas","submitted_at":"2020-09-24T19:04:05Z","abstract_excerpt":"A neural network (NN)-based approach for indoor localization via cellular long-term evolution (LTE) signals is proposed. The approach estimates, from the channel impulse response (CIR), the range between an LTE eNodeB and a receiver. A software-defined radio (SDR) extracts the CIR, which is fed to a long short-term memory model (LSTM) recurrent neural network (RNN) to estimate the range. Experimental results are presented comparing the proposed approach against a baseline RNN without LSTM. The results show a receiver navigating for 100 m in an indoor environment, while receiving signals from o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.11907","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.11907/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":"2026-07-05T01:59:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GIPsnehgsz4glPTzhvZAsOIXW1t49Bcqc9XK5ge2P6bngsLvI0v9/AllCSVddqUDcWsWrAKoGBdY75Q6kTtUAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T18:15:23.012122Z"},"content_sha256":"6274c6ee3a14d6476aa439df1afb171a60e8cf9b76c24db323de71cf43718c44","schema_version":"1.0","event_id":"sha256:6274c6ee3a14d6476aa439df1afb171a60e8cf9b76c24db323de71cf43718c44"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/bundle.json","state_url":"https://pith.science/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/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":"2026-07-06T18:15:23Z","links":{"resolver":"https://pith.science/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M","bundle":"https://pith.science/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/bundle.json","state":"https://pith.science/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZYF4A3AYHBJJRORX4MITO5TZ7M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZYF4A3AYHBJJRORX4MITO5TZ7M","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":"28a2e33425430a1614445ce2ca49ddc19d0de4ee839c629bd30313c6370b9fdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-24T19:04:05Z","title_canon_sha256":"fbc5636f7b0300b6ff8389a5abf49d2f5c9d9a10e4facbec2a34a0daff7939c1"},"schema_version":"1.0","source":{"id":"2009.11907","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.11907","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"arxiv_version","alias_value":"2009.11907v1","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.11907","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_12","alias_value":"ZYF4A3AYHBJJ","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_16","alias_value":"ZYF4A3AYHBJJRORX","created_at":"2026-07-05T01:59:58Z"},{"alias_kind":"pith_short_8","alias_value":"ZYF4A3AY","created_at":"2026-07-05T01:59:58Z"}],"graph_snapshots":[{"event_id":"sha256:6274c6ee3a14d6476aa439df1afb171a60e8cf9b76c24db323de71cf43718c44","target":"graph","created_at":"2026-07-05T01:59:58Z","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/2009.11907/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A neural network (NN)-based approach for indoor localization via cellular long-term evolution (LTE) signals is proposed. The approach estimates, from the channel impulse response (CIR), the range between an LTE eNodeB and a receiver. A software-defined radio (SDR) extracts the CIR, which is fed to a long short-term memory model (LSTM) recurrent neural network (RNN) to estimate the range. Experimental results are presented comparing the proposed approach against a baseline RNN without LSTM. The results show a receiver navigating for 100 m in an indoor environment, while receiving signals from o","authors_text":"Ali A. Abdallah, Halim Lee, Jiwon Seo, Jongmin Park, Zaher M. Kassas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-24T19:04:05Z","title":"Neural Network-Based Ranging with LTE Channel Impulse Response for Localization in Indoor Environments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.11907","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":"sha256:4f55c45e721932a494c46721c69757404434ff58165a3ee746c325e14f3cab0e","target":"record","created_at":"2026-07-05T01:59:58Z","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":"28a2e33425430a1614445ce2ca49ddc19d0de4ee839c629bd30313c6370b9fdc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-24T19:04:05Z","title_canon_sha256":"fbc5636f7b0300b6ff8389a5abf49d2f5c9d9a10e4facbec2a34a0daff7939c1"},"schema_version":"1.0","source":{"id":"2009.11907","kind":"arxiv","version":1}},"canonical_sha256":"ce0bc06c18385298ba37e311377679fb37a28f1f97716001cea882ad6f3dfe56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce0bc06c18385298ba37e311377679fb37a28f1f97716001cea882ad6f3dfe56","first_computed_at":"2026-07-05T01:59:58.538414Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:59:58.538414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gjB9P5oT5EyOjRpjnbnryxjLGjesqock/LXZvCjk44xds1KFEPhr0jZlPVORUMPeh0xGacqjClZnX7SBqF9pDg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:59:58.538837Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.11907","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f55c45e721932a494c46721c69757404434ff58165a3ee746c325e14f3cab0e","sha256:6274c6ee3a14d6476aa439df1afb171a60e8cf9b76c24db323de71cf43718c44"],"state_sha256":"e9396897a2ba4f45f7040e67be37f91116598679c304f59e45be3ee6dc9e87f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"enKLUUqwnHyEK41l4TcxBTJiYkhe2tKInACV54UL9MpwH8tORw+dClI3VEocGFTSVLyJ3Fhm34dIrfYxcEL6BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T18:15:23.014078Z","bundle_sha256":"346d839258c1091beb385b16b3e093c91197e33e88913dbf2f093b45ee3d4eae"}}