{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2KW2M37QS6CT4V7MTDNRAPCARR","short_pith_number":"pith:2KW2M37Q","canonical_record":{"source":{"id":"1503.06571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-23T09:33:33Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"a1436e39a8517492667d65ed45b7f7326b004db2f2336ef1599ddefced6547dc","abstract_canon_sha256":"cd9ee364518bd8f1003f29562322d52bdc018239cb9852128cb8aa80ad7a70e1"},"schema_version":"1.0"},"canonical_sha256":"d2ada66ff097853e57ec98db103c408c57f1900f357abae7f5124a13c655eb43","source":{"kind":"arxiv","id":"1503.06571","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06571","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06571v1","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06571","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"pith_short_12","alias_value":"2KW2M37QS6CT","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2KW2M37QS6CT4V7M","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2KW2M37Q","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2KW2M37QS6CT4V7MTDNRAPCARR","target":"record","payload":{"canonical_record":{"source":{"id":"1503.06571","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-23T09:33:33Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"a1436e39a8517492667d65ed45b7f7326b004db2f2336ef1599ddefced6547dc","abstract_canon_sha256":"cd9ee364518bd8f1003f29562322d52bdc018239cb9852128cb8aa80ad7a70e1"},"schema_version":"1.0"},"canonical_sha256":"d2ada66ff097853e57ec98db103c408c57f1900f357abae7f5124a13c655eb43","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:01.991475Z","signature_b64":"QM9uKcjp7DTsu865VWSMeNJS1nF4zrTmYRiWipHMwoGR7gOssDz3j3L2jdTpB7h8XfdfC+HnoIryFoJlvRxVDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d2ada66ff097853e57ec98db103c408c57f1900f357abae7f5124a13c655eb43","last_reissued_at":"2026-05-18T00:59:01.991007Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:01.991007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.06571","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":"2026-05-18T00:59:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xz5toNJg8XajOsut2m0cWVem31GA15oaKBGpGFOxQsJC5yt2S0vvpo09Ii2OX12B49ABizaFFYs1CeIIYvy5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:37:29.373853Z"},"content_sha256":"0fb58481b7ca91caed52ded9766f36f159a7481c21460c7dff11f3d58c2056bb","schema_version":"1.0","event_id":"sha256:0fb58481b7ca91caed52ded9766f36f159a7481c21460c7dff11f3d58c2056bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2KW2M37QS6CT4V7MTDNRAPCARR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Estimation-Throughput Tradeoff for Underlay Cognitive Radio Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Ankit Kaushik, Bj\\\"orn Ottersten, Friedrich Jondral, Shree Krishna Sharma, Symeon Chatzinotas","submitted_at":"2015-03-23T09:33:33Z","abstract_excerpt":"Understanding the performance of cognitive radio systems is of great interest. To perform dynamic spectrum access, different paradigms are conceptualized in the literature. Of these, Underlay System (US) has caught much attention in the recent past. According to US, a power control mechanism is employed at the Secondary Transmitter (ST) to constrain the interference at the Primary Receiver (PR) below a certain threshold. However, it requires the knowledge of channel towards PR at the ST. This knowledge can be obtained by estimating the received power, assuming a beacon or a pilot channel trans"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06571","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:59:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7rAUBQA9Q/reRK0aaxUNDB9veJ7IQtoyfWPWKHRldnJf7AB0x5c9nIyrVqUeHHHBluGkWoxxegi+/0nriZ4DBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:37:29.374512Z"},"content_sha256":"ea0ba49393b4c22c18eeaf2f0d78959e184c558c551b51ae19d1432774733228","schema_version":"1.0","event_id":"sha256:ea0ba49393b4c22c18eeaf2f0d78959e184c558c551b51ae19d1432774733228"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2KW2M37QS6CT4V7MTDNRAPCARR/bundle.json","state_url":"https://pith.science/pith/2KW2M37QS6CT4V7MTDNRAPCARR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2KW2M37QS6CT4V7MTDNRAPCARR/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":"2026-06-06T15:37:29Z","links":{"resolver":"https://pith.science/pith/2KW2M37QS6CT4V7MTDNRAPCARR","bundle":"https://pith.science/pith/2KW2M37QS6CT4V7MTDNRAPCARR/bundle.json","state":"https://pith.science/pith/2KW2M37QS6CT4V7MTDNRAPCARR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2KW2M37QS6CT4V7MTDNRAPCARR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2KW2M37QS6CT4V7MTDNRAPCARR","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":"cd9ee364518bd8f1003f29562322d52bdc018239cb9852128cb8aa80ad7a70e1","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-23T09:33:33Z","title_canon_sha256":"a1436e39a8517492667d65ed45b7f7326b004db2f2336ef1599ddefced6547dc"},"schema_version":"1.0","source":{"id":"1503.06571","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06571","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06571v1","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06571","created_at":"2026-05-18T00:59:01Z"},{"alias_kind":"pith_short_12","alias_value":"2KW2M37QS6CT","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2KW2M37QS6CT4V7M","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2KW2M37Q","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:ea0ba49393b4c22c18eeaf2f0d78959e184c558c551b51ae19d1432774733228","target":"graph","created_at":"2026-05-18T00:59:01Z","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":"Understanding the performance of cognitive radio systems is of great interest. To perform dynamic spectrum access, different paradigms are conceptualized in the literature. Of these, Underlay System (US) has caught much attention in the recent past. According to US, a power control mechanism is employed at the Secondary Transmitter (ST) to constrain the interference at the Primary Receiver (PR) below a certain threshold. However, it requires the knowledge of channel towards PR at the ST. This knowledge can be obtained by estimating the received power, assuming a beacon or a pilot channel trans","authors_text":"Ankit Kaushik, Bj\\\"orn Ottersten, Friedrich Jondral, Shree Krishna Sharma, Symeon Chatzinotas","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-23T09:33:33Z","title":"Estimation-Throughput Tradeoff for Underlay Cognitive Radio Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06571","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":"sha256:0fb58481b7ca91caed52ded9766f36f159a7481c21460c7dff11f3d58c2056bb","target":"record","created_at":"2026-05-18T00:59:01Z","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":"cd9ee364518bd8f1003f29562322d52bdc018239cb9852128cb8aa80ad7a70e1","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-23T09:33:33Z","title_canon_sha256":"a1436e39a8517492667d65ed45b7f7326b004db2f2336ef1599ddefced6547dc"},"schema_version":"1.0","source":{"id":"1503.06571","kind":"arxiv","version":1}},"canonical_sha256":"d2ada66ff097853e57ec98db103c408c57f1900f357abae7f5124a13c655eb43","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d2ada66ff097853e57ec98db103c408c57f1900f357abae7f5124a13c655eb43","first_computed_at":"2026-05-18T00:59:01.991007Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:01.991007Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QM9uKcjp7DTsu865VWSMeNJS1nF4zrTmYRiWipHMwoGR7gOssDz3j3L2jdTpB7h8XfdfC+HnoIryFoJlvRxVDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:01.991475Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.06571","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fb58481b7ca91caed52ded9766f36f159a7481c21460c7dff11f3d58c2056bb","sha256:ea0ba49393b4c22c18eeaf2f0d78959e184c558c551b51ae19d1432774733228"],"state_sha256":"282a95f1c15f9ef7abf4d51f999c32741d603911cff1fc3da726d5e95853dd35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ikq2QRL0Vkl3+WaJlsstJAja08hCL9Wc7P3HZe/jsjpMvDAxLy2xMHLmM7F5ppfpBGpR+xwK16BKsgdqnzR0BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:37:29.378116Z","bundle_sha256":"d1eb9e9e6ed20734d6f86140be477fb21ad06593b9ef3bbac0b475d8574cabd1"}}