Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-01T14:38:54.776876Z
Paper Citation Record · LEDGER
As of 5 August 2026, this Paper Citation Record lists 30 of 30 outbound references and 0 inbound Pith citation observations for arXiv:2607.18736.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-01T14:38:54.776876Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-05T06:32:48.257954+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
30 of 30 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 691303bb-5298-4f46-a58c-af17b250fb80 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation A tutorial on near-field XL-MIMO communications towards 6G,
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5b3a5d02-33f2-4012-a71a-094fa6bab2fe · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Gridless hybrid- field channel estimation for extra-large aperture array massive MIMO systems,
Reference 2
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 03ab8385-38e7-42ee-810b-db00aa68ebda · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Sensing- enhanced channel estimation for near-field XL-MIMO systems,
Reference 3
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation e88655c7-73e4-4f95-ae9d-afd522fb562d · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Communicating with extremely large-scale ar- ray/surface: Unified modeling and performance analysis,
Reference 4
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 24467a89-11a6-45fb-9442-113e2b2dc0e8 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Trade-off design of delay-phase beamforming for wideband THz enabled XL-MIMO ISAC system,
Reference 5
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 02f93f93-2997-486f-ba36-a00831111f5d · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation A tutorial on extremely large-scale MIMO for 6G: Fundamentals, signal processing, and applications,
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 2e6ee56f-2f3f-423c-a8f3-b704a4757a42 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Near- field communications: Research advances, potential, and challenges,
Reference 7
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1e1e9e1b-e98f-4a97-a0f8-9a02d08e7513 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Multiple access for near-field communications: SDMA or LDMA?
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 59c528ef-e1a6-41fd-a4d9-9596f622be29 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Channel estimation for extremely large-scale MIMO: Far-field or near-field?
Reference 9
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 0b81a94e-44ce-46f4-b316-600c791ce9c9 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Double-sided near-field XL-MIMO: Beamfocusing codeword selection and channel estimation,
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3dcda04f-7199-4ab8-a5df-bbddbc1876c6 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Low-complexity distributed combining design for near- field cell-free XL-MIMO systems,
Reference 11
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c8626bfe-4d51-4a03-b1a8-6d2e1639a63b · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Resource allocation for near-field communications: Fun- damentals, tools, and outlooks,
Reference 12
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 04068b71-9d17-41f2-99eb-4c18b3ea81d3 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Unresolved cited work
Reference 13
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 0d402d2b-6800-414f-aec1-eba2070c99f1 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Near-field wideband beamforming for extremely large antenna arrays,
Reference 14
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 764651ad-69be-44eb-8608-5cf8795ac529 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Redefining polar bound- aries for near-field channel estimation for ultra-massive MIMO antenna array,
Reference 15
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation eb4bb960-fc0e-4c98-826f-341f833c3d9b · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Analyzing URA geometry for enhanced near-field beamfocusing and spatial degrees of freedom,
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation cf251487-9808-4fea-9673-1ddbbb7f443e · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Near-field channel estimation for uniform planar arrays based on an end-to-end spherical wavefront channel model,
Reference 17
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f885c8a3-2b6c-41c3-ba83-726ea7feb46d · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Finite beam depth analysis for large arrays,
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 8ce64cf0-d672-421d-b53a-bd6b0058a966 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Exploring the advantages of sparse arrays in near-field XL-MIMO systems: Beam analysis and EDoF function,
Reference 20
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 69f7b5e8-6c66-4a69-8351-8e73867e9169 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Analytical framework for effective degrees of freedom in near-field XL-MIMO,
Reference 21
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 143984c6-2a9a-4b4a-95f7-02978113887a · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation FDD massive MIMO based on efficient downlink channel reconstruction,
Reference 22
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 7551cb8f-183e-45ac-b5be-4d85ebc907fd · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Channel recovery for UPA- assisted massive MIMO systems with asymmetrical uplink and downlink transceivers,
Reference 23
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation dd58717e-345e-4fb8-9c27-6cf2c6b2e65a · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Near-optimal near-field beam training: From searching to inference,
Reference 24
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 587c8184-66f5-445b-9f43-b36512d5c572 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Near-field spatial correlation for extremely large- scale array communications,
Reference 25
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9313ac33-5278-4d5c-aebf-d330c3b74abb · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Hybrid near-far field channel estimation for holographic MIMO communications,
Reference 26
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation ee494158-5c2e-45dd-bc5f-706fe475725c · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Hybrid- field channel estimation for XL-MIMO systems with stochastic gradient pursuit algorithm,
Reference 27
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation aaf8d792-5a26-4def-8043-b224b49aa9c6 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Pilot signal and channel estimator co-design for hybrid-field XL-MIMO,
Reference 28
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation dbf8739e-8625-466b-ac4a-6ae725f26ab5 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Site- specific online compressive beam codebook learning in mmWave vehic- ular communication,
Reference 29
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 809309e2-d9b3-49f3-92b8-fbecfed56683 · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Estimation of signal parameters in the presence of noise,
Reference 30
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation ef387138-3282-435e-9b51-ad61fd38140f · outbound
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation Error bounds for uplink and downlink 3D localization in 5G millimeter wave systems,
Reference 31
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Unavailable: canonical work link unavailable.
No inbound Pith citation observations are available.