{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:D7KMCFFD6QU5VQCIBHJYL76QG6","short_pith_number":"pith:D7KMCFFD","canonical_record":{"source":{"id":"1307.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-07-14T11:00:40Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"32b9499145436d6d14948bb80b9ebbfc9b188d0b7ebc358154d04d9772a05fd7","abstract_canon_sha256":"93c060d9955b946b8d7aefafdda13127a976b042752aae136e6efd852a529c7d"},"schema_version":"1.0"},"canonical_sha256":"1fd4c114a3f429dac04809d385ffd037b2a7c4779cb430f57d7a4efb44892cb7","source":{"kind":"arxiv","id":"1307.3724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3724","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3724v1","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3724","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"D7KMCFFD6QU5","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"D7KMCFFD6QU5VQCI","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"D7KMCFFD","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:D7KMCFFD6QU5VQCIBHJYL76QG6","target":"record","payload":{"canonical_record":{"source":{"id":"1307.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-07-14T11:00:40Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"32b9499145436d6d14948bb80b9ebbfc9b188d0b7ebc358154d04d9772a05fd7","abstract_canon_sha256":"93c060d9955b946b8d7aefafdda13127a976b042752aae136e6efd852a529c7d"},"schema_version":"1.0"},"canonical_sha256":"1fd4c114a3f429dac04809d385ffd037b2a7c4779cb430f57d7a4efb44892cb7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:28.075460Z","signature_b64":"RBx3re7yGc4TALaG2V7ycvZZ4n3IOAZVNbiZwpdvn/cEr7v7qWzWQAi2JPYKtbAcu/GjcQQUHayk9AuPGWmjDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1fd4c114a3f429dac04809d385ffd037b2a7c4779cb430f57d7a4efb44892cb7","last_reissued_at":"2026-05-18T03:18:28.074662Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:28.074662Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.3724","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":"2026-05-18T03:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BUTuTnE6phI8ZG44Of3EJ219Zgm6p7ZuSqHc2YqCmNmTPwKZRMlFi0TKkNoKmILz1oE+rCYK8rvQxuDxWArJAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:33:28.558155Z"},"content_sha256":"eb33789e31c228ecb89d2f7af5d86a0556a7b7a886ba3556a43c223c7e21a330","schema_version":"1.0","event_id":"sha256:eb33789e31c228ecb89d2f7af5d86a0556a7b7a886ba3556a43c223c7e21a330"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:D7KMCFFD6QU5VQCIBHJYL76QG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Limiting Performance of Conventional and Widely Linear DFT-precoded-OFDM Receivers in Wideband Frequency Selective Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kiran Kuchi","submitted_at":"2013-07-14T11:00:40Z","abstract_excerpt":"This paper describes the limiting behavior of linear and decision feedback equalizers (DFEs) in single/multiple antenna systems employing real/complex-valued modulation alphabets. The wideband frequency selective channel is modeled using a Rayleigh fading channel model with infinite number of time domain channel taps. Using this model, we show that the considered equalizers offer a fixed post signal-to-noise-ratio (post-SNR) at the equalizer output that is close to the matched filter bound (MFB). General expressions for the post-SNR are obtained for zero-forcing (ZF) based conventional receive"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3724","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":"2026-05-18T03:18:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fU+w0A0f3ZM6pQyNNtAY7Zx4YQwvAonb13lu5Zo04TSRMjtOFh5B1E+i0en8j2KtfWkH/ilPjQDcgHJKcDGNDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:33:28.558774Z"},"content_sha256":"fb5d268b83d978bae176df36b771a1132aa77723ca43248eaad923c79aabee39","schema_version":"1.0","event_id":"sha256:fb5d268b83d978bae176df36b771a1132aa77723ca43248eaad923c79aabee39"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/bundle.json","state_url":"https://pith.science/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/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":"2026-06-05T20:33:28Z","links":{"resolver":"https://pith.science/pith/D7KMCFFD6QU5VQCIBHJYL76QG6","bundle":"https://pith.science/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/bundle.json","state":"https://pith.science/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D7KMCFFD6QU5VQCIBHJYL76QG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:D7KMCFFD6QU5VQCIBHJYL76QG6","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":"93c060d9955b946b8d7aefafdda13127a976b042752aae136e6efd852a529c7d","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-07-14T11:00:40Z","title_canon_sha256":"32b9499145436d6d14948bb80b9ebbfc9b188d0b7ebc358154d04d9772a05fd7"},"schema_version":"1.0","source":{"id":"1307.3724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3724","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3724v1","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3724","created_at":"2026-05-18T03:18:28Z"},{"alias_kind":"pith_short_12","alias_value":"D7KMCFFD6QU5","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"D7KMCFFD6QU5VQCI","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"D7KMCFFD","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:fb5d268b83d978bae176df36b771a1132aa77723ca43248eaad923c79aabee39","target":"graph","created_at":"2026-05-18T03:18:28Z","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":"This paper describes the limiting behavior of linear and decision feedback equalizers (DFEs) in single/multiple antenna systems employing real/complex-valued modulation alphabets. The wideband frequency selective channel is modeled using a Rayleigh fading channel model with infinite number of time domain channel taps. Using this model, we show that the considered equalizers offer a fixed post signal-to-noise-ratio (post-SNR) at the equalizer output that is close to the matched filter bound (MFB). General expressions for the post-SNR are obtained for zero-forcing (ZF) based conventional receive","authors_text":"Kiran Kuchi","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-07-14T11:00:40Z","title":"Limiting Performance of Conventional and Widely Linear DFT-precoded-OFDM Receivers in Wideband Frequency Selective Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3724","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:eb33789e31c228ecb89d2f7af5d86a0556a7b7a886ba3556a43c223c7e21a330","target":"record","created_at":"2026-05-18T03:18:28Z","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":"93c060d9955b946b8d7aefafdda13127a976b042752aae136e6efd852a529c7d","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-07-14T11:00:40Z","title_canon_sha256":"32b9499145436d6d14948bb80b9ebbfc9b188d0b7ebc358154d04d9772a05fd7"},"schema_version":"1.0","source":{"id":"1307.3724","kind":"arxiv","version":1}},"canonical_sha256":"1fd4c114a3f429dac04809d385ffd037b2a7c4779cb430f57d7a4efb44892cb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1fd4c114a3f429dac04809d385ffd037b2a7c4779cb430f57d7a4efb44892cb7","first_computed_at":"2026-05-18T03:18:28.074662Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:28.074662Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RBx3re7yGc4TALaG2V7ycvZZ4n3IOAZVNbiZwpdvn/cEr7v7qWzWQAi2JPYKtbAcu/GjcQQUHayk9AuPGWmjDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:28.075460Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.3724","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb33789e31c228ecb89d2f7af5d86a0556a7b7a886ba3556a43c223c7e21a330","sha256:fb5d268b83d978bae176df36b771a1132aa77723ca43248eaad923c79aabee39"],"state_sha256":"cb7b9e590ed4adbbf3084fac26f10b5c2b02b965783712576cad6068508b457a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iu4Vc+rizJ7RrnRsDgY6uRd7UOjvLp/XVSGRMuPpYJbZxveiAZC6oCJpLxo5H2omQkHGOPMsI/cRn/hxHtJ/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:33:28.562380Z","bundle_sha256":"83adbb03474d535b884d4bfc0c3570a41777faf74b7a45b2c02dfe690e5059cf"}}