{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GIVLS4VAD3WO7YCIRVZBYFKEYI","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":"37c515817f0b07904f908ebabdd1feaf82799b4f048646d1b38683c25ee722e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2011-01-17T00:15:06Z","title_canon_sha256":"cd40a809aa0c0c37c5e6f4e8cda7a4bef55b7669ed64d1418bc5f4b5636118b5"},"schema_version":"1.0","source":{"id":"1101.3102","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.3102","created_at":"2026-05-18T02:22:52Z"},{"alias_kind":"arxiv_version","alias_value":"1101.3102v2","created_at":"2026-05-18T02:22:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.3102","created_at":"2026-05-18T02:22:52Z"},{"alias_kind":"pith_short_12","alias_value":"GIVLS4VAD3WO","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GIVLS4VAD3WO7YCI","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GIVLS4VA","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:8fa44b1be94fcf900a0f5d9223fc2306a5f0e023b7e0a7fda45c656b7ae36051","target":"graph","created_at":"2026-05-18T02:22:52Z","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":"Location distinction is defined as determining whether or not the position of a device has changed. We introduce methods and metrics for performing location distinction in multiple-input multiple-output (MIMO) wireless networks. Using MIMO channel measurements from two different testbeds, we evaluate the performance of temporal signature-based location distinction with varying system parameters, and show that it can be applied to MIMO channels with favorable results. In particular, a 2x2 MIMO channel with a bandwidth of 80 MHz allows a 64-fold reduction in miss rate over the SISO channel for a","authors_text":"Daryl Wasden, Dustin Maas, Michael Jensen, Neal Patwari, Sneha Kasera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2011-01-17T00:15:06Z","title":"Experimental Performance Evaluation of Location Distinction for MIMO Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.3102","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":"sha256:3b389334c36692572211ccf8d02dacc026f56523e0834625b51452b48bc14e76","target":"record","created_at":"2026-05-18T02:22:52Z","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":"37c515817f0b07904f908ebabdd1feaf82799b4f048646d1b38683c25ee722e9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2011-01-17T00:15:06Z","title_canon_sha256":"cd40a809aa0c0c37c5e6f4e8cda7a4bef55b7669ed64d1418bc5f4b5636118b5"},"schema_version":"1.0","source":{"id":"1101.3102","kind":"arxiv","version":2}},"canonical_sha256":"322ab972a01eecefe0488d721c1544c23d18c38c82ea3c19cafc817b0a1b3abc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"322ab972a01eecefe0488d721c1544c23d18c38c82ea3c19cafc817b0a1b3abc","first_computed_at":"2026-05-18T02:22:52.167539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:22:52.167539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fx/8wkIUNP7O3sHxNPxbh8GhgW6KtJnDHq/CNXTbazPb5HToF7UtAZyHLZQGcGxDQQx5B4FE9Pmw71t4CdFVAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:22:52.168056Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.3102","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b389334c36692572211ccf8d02dacc026f56523e0834625b51452b48bc14e76","sha256:8fa44b1be94fcf900a0f5d9223fc2306a5f0e023b7e0a7fda45c656b7ae36051"],"state_sha256":"45f89e302017df1d97b5c6bedfcef5d0c53c0c43d9ed1a5568cb2473b47403f4"}