{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:7CY2Q6UJQHDHSHTEM4UW2MFWVL","short_pith_number":"pith:7CY2Q6UJ","canonical_record":{"source":{"id":"1705.04504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-12T10:43:22Z","cross_cats_sorted":["cs.NI","math.IT"],"title_canon_sha256":"afc5fb0d068582a90e7da55e077737ea957ce122a2bc4794b09bbd20184c6073","abstract_canon_sha256":"26bd422e0bb567a79def42e960bea3325186f10fc492a64da9f49301193a1af3"},"schema_version":"1.0"},"canonical_sha256":"f8b1a87a8981c6791e6467296d30b6aacd2133d164b0c14945976fcf53f9993d","source":{"kind":"arxiv","id":"1705.04504","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.04504","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"1705.04504v1","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.04504","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"7CY2Q6UJQHDH","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7CY2Q6UJQHDHSHTE","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7CY2Q6UJ","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:7CY2Q6UJQHDHSHTEM4UW2MFWVL","target":"record","payload":{"canonical_record":{"source":{"id":"1705.04504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-12T10:43:22Z","cross_cats_sorted":["cs.NI","math.IT"],"title_canon_sha256":"afc5fb0d068582a90e7da55e077737ea957ce122a2bc4794b09bbd20184c6073","abstract_canon_sha256":"26bd422e0bb567a79def42e960bea3325186f10fc492a64da9f49301193a1af3"},"schema_version":"1.0"},"canonical_sha256":"f8b1a87a8981c6791e6467296d30b6aacd2133d164b0c14945976fcf53f9993d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:37.924053Z","signature_b64":"UiSQZ7amJeWKws5Cc/9zjKL6jLm8LGuLWmVkvaDoEOm3p3Wypt6ZOiDPIGQPxaDIQGllA0WqgJ0IC1nGJxF2Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8b1a87a8981c6791e6467296d30b6aacd2133d164b0c14945976fcf53f9993d","last_reissued_at":"2026-05-18T00:44:37.923603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:37.923603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.04504","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":"2026-05-18T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wiL9IGLFvnrORY8xTwxxnLVV4YoEdgdIYLOc5HI75CjQsbi0i1G1R9BZHh2kKVJR6OvWZxYmslyqwwsUEjqwAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T00:23:02.206896Z"},"content_sha256":"b8bace586cd25bba4976dc3b62942bfcd0f0622391decf3cf7c34fc3a8d96972","schema_version":"1.0","event_id":"sha256:b8bace586cd25bba4976dc3b62942bfcd0f0622391decf3cf7c34fc3a8d96972"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:7CY2Q6UJQHDHSHTEM4UW2MFWVL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio Resource Allocation for Multicarrier-Low Density Spreading Multiple Access","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NI","math.IT"],"primary_cat":"cs.IT","authors_text":"Mohammed Al-Imari, Muhammad Ali Imran, Pei Xiao","submitted_at":"2017-05-12T10:43:22Z","abstract_excerpt":"Multicarrier-low density spreading multiple access (MC-LDSMA) is a promising multiple access technique that enables near optimum multiuser detection. In MC-LDSMA, each user's symbol spread on a small set of subcarriers, and each subcarrier is shared by multiple users. The unique structure of MC-LDSMA makes the radio resource allocation more challenging comparing to some well-known multiple access techniques. In this paper, we study the radio resource allocation for single-cell MC-LDSMA system. Firstly, we consider the single-user case, and derive the optimal power allocation and subcarriers pa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.04504","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":"2026-05-18T00:44:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f2aLfISKto7h15v2R2igAS7PJ55d5fJE7xFE1VeCX352OLGB1Z77C/W7VAo4fp5vXi1rrC69Osl5p+T1c8uVDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T00:23:02.207240Z"},"content_sha256":"aaf1d7091d209360291313f608ef36e4725e2f61c1fc583340df3b56e03b2866","schema_version":"1.0","event_id":"sha256:aaf1d7091d209360291313f608ef36e4725e2f61c1fc583340df3b56e03b2866"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/bundle.json","state_url":"https://pith.science/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/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":"2026-06-09T00:23:02Z","links":{"resolver":"https://pith.science/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL","bundle":"https://pith.science/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/bundle.json","state":"https://pith.science/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CY2Q6UJQHDHSHTEM4UW2MFWVL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7CY2Q6UJQHDHSHTEM4UW2MFWVL","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":"26bd422e0bb567a79def42e960bea3325186f10fc492a64da9f49301193a1af3","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-12T10:43:22Z","title_canon_sha256":"afc5fb0d068582a90e7da55e077737ea957ce122a2bc4794b09bbd20184c6073"},"schema_version":"1.0","source":{"id":"1705.04504","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.04504","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"arxiv_version","alias_value":"1705.04504v1","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.04504","created_at":"2026-05-18T00:44:37Z"},{"alias_kind":"pith_short_12","alias_value":"7CY2Q6UJQHDH","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"7CY2Q6UJQHDHSHTE","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"7CY2Q6UJ","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:aaf1d7091d209360291313f608ef36e4725e2f61c1fc583340df3b56e03b2866","target":"graph","created_at":"2026-05-18T00:44:37Z","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":"Multicarrier-low density spreading multiple access (MC-LDSMA) is a promising multiple access technique that enables near optimum multiuser detection. In MC-LDSMA, each user's symbol spread on a small set of subcarriers, and each subcarrier is shared by multiple users. The unique structure of MC-LDSMA makes the radio resource allocation more challenging comparing to some well-known multiple access techniques. In this paper, we study the radio resource allocation for single-cell MC-LDSMA system. Firstly, we consider the single-user case, and derive the optimal power allocation and subcarriers pa","authors_text":"Mohammed Al-Imari, Muhammad Ali Imran, Pei Xiao","cross_cats":["cs.NI","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-12T10:43:22Z","title":"Radio Resource Allocation for Multicarrier-Low Density Spreading Multiple Access"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.04504","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:b8bace586cd25bba4976dc3b62942bfcd0f0622391decf3cf7c34fc3a8d96972","target":"record","created_at":"2026-05-18T00:44:37Z","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":"26bd422e0bb567a79def42e960bea3325186f10fc492a64da9f49301193a1af3","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-05-12T10:43:22Z","title_canon_sha256":"afc5fb0d068582a90e7da55e077737ea957ce122a2bc4794b09bbd20184c6073"},"schema_version":"1.0","source":{"id":"1705.04504","kind":"arxiv","version":1}},"canonical_sha256":"f8b1a87a8981c6791e6467296d30b6aacd2133d164b0c14945976fcf53f9993d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8b1a87a8981c6791e6467296d30b6aacd2133d164b0c14945976fcf53f9993d","first_computed_at":"2026-05-18T00:44:37.923603Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:37.923603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UiSQZ7amJeWKws5Cc/9zjKL6jLm8LGuLWmVkvaDoEOm3p3Wypt6ZOiDPIGQPxaDIQGllA0WqgJ0IC1nGJxF2Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:37.924053Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.04504","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8bace586cd25bba4976dc3b62942bfcd0f0622391decf3cf7c34fc3a8d96972","sha256:aaf1d7091d209360291313f608ef36e4725e2f61c1fc583340df3b56e03b2866"],"state_sha256":"4bcc30c2f73bd3a7e4f54dae104e07d8eab0036474869dd7e032573963af29f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l1cr7OKA/Yi7rPSLsT9cfDg++M35ZBqb15xkS5X9vkberf3zudX7G+3Z5Z6EwWA+Mjlrh3tODURV72y6bLV8DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T00:23:02.209063Z","bundle_sha256":"14883b07d229aaed85622e6cd055082a8e6d8b2fe540caae96653466aa4f102e"}}