{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:YKB4MANO6MUMDRUWMSQ6FYCU7T","short_pith_number":"pith:YKB4MANO","canonical_record":{"source":{"id":"1611.03721","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-11T14:42:06Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"76d60cd1b313a1a7f3671f90357cae1cd2b764aa3b8bfb88ad5308347be537b0","abstract_canon_sha256":"432a1d5f8e79631daa9e3a61d109cfb1d952fd5c12a1fbe7f7946a3ca2af1eda"},"schema_version":"1.0"},"canonical_sha256":"c283c601aef328c1c69664a1e2e054fcfdd782da76c86730651fc382408a3c45","source":{"kind":"arxiv","id":"1611.03721","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03721","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03721v1","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03721","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"pith_short_12","alias_value":"YKB4MANO6MUM","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YKB4MANO6MUMDRUW","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YKB4MANO","created_at":"2026-05-18T12:30:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:YKB4MANO6MUMDRUWMSQ6FYCU7T","target":"record","payload":{"canonical_record":{"source":{"id":"1611.03721","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-11T14:42:06Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"76d60cd1b313a1a7f3671f90357cae1cd2b764aa3b8bfb88ad5308347be537b0","abstract_canon_sha256":"432a1d5f8e79631daa9e3a61d109cfb1d952fd5c12a1fbe7f7946a3ca2af1eda"},"schema_version":"1.0"},"canonical_sha256":"c283c601aef328c1c69664a1e2e054fcfdd782da76c86730651fc382408a3c45","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:47:08.778984Z","signature_b64":"BhheN+tlU9kg25Sk9sceGdVdGmcwqTnZbLODk1CNoBF1bJHWtzTAfwZcPw7QQ3Uu50jMcFy6sQyJMl5/nJYGAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c283c601aef328c1c69664a1e2e054fcfdd782da76c86730651fc382408a3c45","last_reissued_at":"2026-05-18T00:47:08.778409Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:47:08.778409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.03721","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":"2026-05-18T00:47:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N8OQDbP2odujmnBfraC/3gWu6bcFeYxlFxRp32J9+H67Ym4YFrKJ0g5NQYqTyU0qZi1lzdcEngnbyt/jaRFmCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T07:24:37.781878Z"},"content_sha256":"e240f3826267dabd90e16ef8865792f30a9ecda73992fad83a6e035bbe9c89a8","schema_version":"1.0","event_id":"sha256:e240f3826267dabd90e16ef8865792f30a9ecda73992fad83a6e035bbe9c89a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:YKB4MANO6MUMDRUWMSQ6FYCU7T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatio-Temporal Waveform Design for Multi-user Massive MIMO Downlink with 1-bit Receivers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Ahmet Gokceoglu, Emil Bjornson, Erik Larsson, Mikko Valkama","submitted_at":"2016-11-11T14:42:06Z","abstract_excerpt":"Internet-of-Things (IoT) refers to a high-density network of low-cost low-bitrate terminals and sensors where also low energy consumption is one central feature. As the power-budget of classical receiver chains is dominated by the high-resolution analog-to-digital converters (ADCs), there is a growing interest towards deploying receiver architectures with reduced-bit or even 1-bit ADCs. In this paper, we study waveform design, optimization and detection aspects of multi-user massive MIMO downlink where user terminals adopt very simple 1-bit ADCs with oversampling. In order to achieve spectral "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03721","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":"2026-05-18T00:47:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Z5J19kZopm/6Ns3y1kHMnd49GGJPzHXsDv+1pTLVCDqwhRdPdntRcp3M1cSd5FScVMfNZ4yohogzu++UtjVAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T07:24:37.782225Z"},"content_sha256":"d967d3b946b56d868cf085f81f16e4ea3588c655e11208e430c5aace3923249d","schema_version":"1.0","event_id":"sha256:d967d3b946b56d868cf085f81f16e4ea3588c655e11208e430c5aace3923249d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/bundle.json","state_url":"https://pith.science/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/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":"2026-06-20T07:24:37Z","links":{"resolver":"https://pith.science/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T","bundle":"https://pith.science/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/bundle.json","state":"https://pith.science/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YKB4MANO6MUMDRUWMSQ6FYCU7T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:YKB4MANO6MUMDRUWMSQ6FYCU7T","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":"432a1d5f8e79631daa9e3a61d109cfb1d952fd5c12a1fbe7f7946a3ca2af1eda","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-11T14:42:06Z","title_canon_sha256":"76d60cd1b313a1a7f3671f90357cae1cd2b764aa3b8bfb88ad5308347be537b0"},"schema_version":"1.0","source":{"id":"1611.03721","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03721","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03721v1","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03721","created_at":"2026-05-18T00:47:08Z"},{"alias_kind":"pith_short_12","alias_value":"YKB4MANO6MUM","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_16","alias_value":"YKB4MANO6MUMDRUW","created_at":"2026-05-18T12:30:53Z"},{"alias_kind":"pith_short_8","alias_value":"YKB4MANO","created_at":"2026-05-18T12:30:53Z"}],"graph_snapshots":[{"event_id":"sha256:d967d3b946b56d868cf085f81f16e4ea3588c655e11208e430c5aace3923249d","target":"graph","created_at":"2026-05-18T00:47:08Z","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":"Internet-of-Things (IoT) refers to a high-density network of low-cost low-bitrate terminals and sensors where also low energy consumption is one central feature. As the power-budget of classical receiver chains is dominated by the high-resolution analog-to-digital converters (ADCs), there is a growing interest towards deploying receiver architectures with reduced-bit or even 1-bit ADCs. In this paper, we study waveform design, optimization and detection aspects of multi-user massive MIMO downlink where user terminals adopt very simple 1-bit ADCs with oversampling. In order to achieve spectral ","authors_text":"Ahmet Gokceoglu, Emil Bjornson, Erik Larsson, Mikko Valkama","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-11T14:42:06Z","title":"Spatio-Temporal Waveform Design for Multi-user Massive MIMO Downlink with 1-bit Receivers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03721","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:e240f3826267dabd90e16ef8865792f30a9ecda73992fad83a6e035bbe9c89a8","target":"record","created_at":"2026-05-18T00:47:08Z","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":"432a1d5f8e79631daa9e3a61d109cfb1d952fd5c12a1fbe7f7946a3ca2af1eda","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-11T14:42:06Z","title_canon_sha256":"76d60cd1b313a1a7f3671f90357cae1cd2b764aa3b8bfb88ad5308347be537b0"},"schema_version":"1.0","source":{"id":"1611.03721","kind":"arxiv","version":1}},"canonical_sha256":"c283c601aef328c1c69664a1e2e054fcfdd782da76c86730651fc382408a3c45","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c283c601aef328c1c69664a1e2e054fcfdd782da76c86730651fc382408a3c45","first_computed_at":"2026-05-18T00:47:08.778409Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:08.778409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BhheN+tlU9kg25Sk9sceGdVdGmcwqTnZbLODk1CNoBF1bJHWtzTAfwZcPw7QQ3Uu50jMcFy6sQyJMl5/nJYGAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:08.778984Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.03721","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e240f3826267dabd90e16ef8865792f30a9ecda73992fad83a6e035bbe9c89a8","sha256:d967d3b946b56d868cf085f81f16e4ea3588c655e11208e430c5aace3923249d"],"state_sha256":"c004f30961f1d3cdc22d22b0e51c8da37b6bd7b6eb3b74a987016f7d1ce8b374"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uDd+KgdRvZ/2GHqdTzC4VM7mSqe4DMOW7ygUXnQM81oRzryDBxr9Ap+X1ZsiNxsxtQPydR8ILhjtr4K6gDZZBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T07:24:37.784325Z","bundle_sha256":"024f1fbb3a0e5a832d608d4cd3d772bbfc17db8b9e739c41371da1e3dda759eb"}}