{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:U7JTZPVYS2BHGQLG5CEAU7SQAA","short_pith_number":"pith:U7JTZPVY","canonical_record":{"source":{"id":"1303.5107","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-03-17T23:38:25Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"b39b916ee460b55c9ae0c64a15c18e8ba0f9476674fdf95c2f221e446b520324","abstract_canon_sha256":"e4e1ff60129fc43b00e8c835223baa81e49b775bc2ff91c45cdd7dbf03efcdef"},"schema_version":"1.0"},"canonical_sha256":"a7d33cbeb89682734166e8880a7e50002c76da6f86e704131c6d3911aa83b6a3","source":{"kind":"arxiv","id":"1303.5107","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.5107","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"1303.5107v1","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.5107","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"U7JTZPVYS2BH","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U7JTZPVYS2BHGQLG","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U7JTZPVY","created_at":"2026-05-18T12:28:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:U7JTZPVYS2BHGQLG5CEAU7SQAA","target":"record","payload":{"canonical_record":{"source":{"id":"1303.5107","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-03-17T23:38:25Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"b39b916ee460b55c9ae0c64a15c18e8ba0f9476674fdf95c2f221e446b520324","abstract_canon_sha256":"e4e1ff60129fc43b00e8c835223baa81e49b775bc2ff91c45cdd7dbf03efcdef"},"schema_version":"1.0"},"canonical_sha256":"a7d33cbeb89682734166e8880a7e50002c76da6f86e704131c6d3911aa83b6a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:30:14.551432Z","signature_b64":"+VDo4Y4I2I+miS+DkKMIQesOCcXOzTjOHUl044tmfsFXOj36RQwHurpAmihF7Gvo6cUkuX8i6P/PI/kJ3j5LAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7d33cbeb89682734166e8880a7e50002c76da6f86e704131c6d3911aa83b6a3","last_reissued_at":"2026-05-18T03:30:14.550676Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:30:14.550676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.5107","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":"2026-05-18T03:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hZYC7/RMSp/NNHL6W91DKFbdhA8Swqo2yhmXbo97OtOCKjna3FRp2q4vEVpXOehnj+5YCzmT8gwhrbQ7kU8qCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:49:03.186409Z"},"content_sha256":"880d8f8419736422ff959cfad37e08df632b6b8c17428ea759f34635ee32a56b","schema_version":"1.0","event_id":"sha256:880d8f8419736422ff959cfad37e08df632b6b8c17428ea759f34635ee32a56b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:U7JTZPVYS2BHGQLG5CEAU7SQAA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Joint Power Adjustment and Receiver Design for Distributed Space-Time Coded in Cooperative MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"A. Schmeink, R. C. de Lamare, T. Peng","submitted_at":"2013-03-17T23:38:25Z","abstract_excerpt":"In this paper, a joint power allocation algorithm with minimum mean-squared error (MMSE) receiver for a cooperative Multiple-Input and Multiple-Output (MIMO) network which employs multiple relays and a Decode-and-Forward (DF) strategy is proposed. A Distributed Space-Time Coding (DSTC) scheme is applied in each relay node. We present a joint constrained optimization algorithm to determine the power allocation parameters and the MMSE receive filter parameter vectors for each transmitted symbol in each link, as well as the channel coefficients matrix. A Stochastic Gradient (SG) algorithm is deri"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.5107","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":"2026-05-18T03:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nJiH4btb2Iiqtdse2SeBvMcrvAsZSB7xiqSSb6PsvdlaMo/3INNGiUzu/t0m0VFRRkXbLW87NrWKxUPiohqEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T10:49:03.186763Z"},"content_sha256":"ae69685abb7fbde4a9c6e2c3d84d66bec8344464481d51ddc205aba1a836117c","schema_version":"1.0","event_id":"sha256:ae69685abb7fbde4a9c6e2c3d84d66bec8344464481d51ddc205aba1a836117c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/bundle.json","state_url":"https://pith.science/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/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":"2026-05-20T10:49:03Z","links":{"resolver":"https://pith.science/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA","bundle":"https://pith.science/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/bundle.json","state":"https://pith.science/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7JTZPVYS2BHGQLG5CEAU7SQAA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:U7JTZPVYS2BHGQLG5CEAU7SQAA","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":"e4e1ff60129fc43b00e8c835223baa81e49b775bc2ff91c45cdd7dbf03efcdef","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-03-17T23:38:25Z","title_canon_sha256":"b39b916ee460b55c9ae0c64a15c18e8ba0f9476674fdf95c2f221e446b520324"},"schema_version":"1.0","source":{"id":"1303.5107","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.5107","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"1303.5107v1","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.5107","created_at":"2026-05-18T03:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"U7JTZPVYS2BH","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_16","alias_value":"U7JTZPVYS2BHGQLG","created_at":"2026-05-18T12:28:02Z"},{"alias_kind":"pith_short_8","alias_value":"U7JTZPVY","created_at":"2026-05-18T12:28:02Z"}],"graph_snapshots":[{"event_id":"sha256:ae69685abb7fbde4a9c6e2c3d84d66bec8344464481d51ddc205aba1a836117c","target":"graph","created_at":"2026-05-18T03:30:14Z","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":"In this paper, a joint power allocation algorithm with minimum mean-squared error (MMSE) receiver for a cooperative Multiple-Input and Multiple-Output (MIMO) network which employs multiple relays and a Decode-and-Forward (DF) strategy is proposed. A Distributed Space-Time Coding (DSTC) scheme is applied in each relay node. We present a joint constrained optimization algorithm to determine the power allocation parameters and the MMSE receive filter parameter vectors for each transmitted symbol in each link, as well as the channel coefficients matrix. A Stochastic Gradient (SG) algorithm is deri","authors_text":"A. Schmeink, R. C. de Lamare, T. Peng","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-03-17T23:38:25Z","title":"Joint Power Adjustment and Receiver Design for Distributed Space-Time Coded in Cooperative MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.5107","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":"sha256:880d8f8419736422ff959cfad37e08df632b6b8c17428ea759f34635ee32a56b","target":"record","created_at":"2026-05-18T03:30:14Z","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":"e4e1ff60129fc43b00e8c835223baa81e49b775bc2ff91c45cdd7dbf03efcdef","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-03-17T23:38:25Z","title_canon_sha256":"b39b916ee460b55c9ae0c64a15c18e8ba0f9476674fdf95c2f221e446b520324"},"schema_version":"1.0","source":{"id":"1303.5107","kind":"arxiv","version":1}},"canonical_sha256":"a7d33cbeb89682734166e8880a7e50002c76da6f86e704131c6d3911aa83b6a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7d33cbeb89682734166e8880a7e50002c76da6f86e704131c6d3911aa83b6a3","first_computed_at":"2026-05-18T03:30:14.550676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:14.550676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+VDo4Y4I2I+miS+DkKMIQesOCcXOzTjOHUl044tmfsFXOj36RQwHurpAmihF7Gvo6cUkuX8i6P/PI/kJ3j5LAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:14.551432Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.5107","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:880d8f8419736422ff959cfad37e08df632b6b8c17428ea759f34635ee32a56b","sha256:ae69685abb7fbde4a9c6e2c3d84d66bec8344464481d51ddc205aba1a836117c"],"state_sha256":"edb0cd50bf55c138dcce3ed05a6beb1a12c38cac9524e5659db176b79c42a61b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bTz+Nizw/1p8e9T6Pwpl8saZxeZcMyECOP2dYyN1GfxXPBJ7qtDzYos5umIg+mUgKchymXVvunmWH+yI0uY9AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T10:49:03.188639Z","bundle_sha256":"835ed11454509fcd6c672f353752475af0fc3011d435e8bfda1d8d4bd637664d"}}