Pith Number

pith:TXVJ74QA

pith:2025:TXVJ74QA5W2TJSO2UROSUF6REQ

not attested not anchored not stored refs pending

Channel Estimation in Massive MIMO Systems with Orthogonal Delay-Doppler Division Multiplexing

Chau Yuen, Chongwen Huang, Dezhi Wang, Lei Liu, M\'erouane Debbah, Sami Muhaidat, Xiaojun Yuan, Xiaoming Chen, Zhaoyang Zhang

arxiv:2507.19812 v1 · 2025-07-26 · eess.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXVJ74QA5W2TJSO2UROSUF6REQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T11:43:42.514001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dea9ff200edb534c9daa45d2a17d124333a474b5906abb6c7621a06f498ca37

Aliases

arxiv: 2507.19812 · arxiv_version: 2507.19812v1 · doi: 10.48550/arxiv.2507.19812 · pith_short_12: TXVJ74QA5W2T · pith_short_16: TXVJ74QA5W2TJSO2 · pith_short_8: TXVJ74QA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TXVJ74QA5W2TJSO2UROSUF6REQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9dea9ff200edb534c9daa45d2a17d124333a474b5906abb6c7621a06f498ca37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1495adce2b2e19df8145facb2753f8949c95447a4726f65caaa35c83858fe36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2025-07-26T06:05:10Z",
    "title_canon_sha256": "3ce84fcb74ff1d0390bf7b10b016cc3ff7b593e56a9a879208884ce8731c8862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.19812",
    "kind": "arxiv",
    "version": 1
  }
}