Pith Number

pith:QTP6T6JJ

pith:2018:QTP6T6JJ7UYJ3Z26ILPO5EZ444

not attested not anchored not stored refs pending

Efficient Channel Estimator with Angle-Division Multiple Access

(2) Department of Automation, (3) Lab of Efficient Architectures for Digital-communication, 4, (4) Quantum Information Center, 5), 5) ((1) School of Electronic Science, (5) National Mobile Communications Research Laboratory), Beijing, China, Chuan Zhang (3, Engineering, Feifei Gao (2), Hongxiang Xie (2), Jin Sha (1), Nanjing University, Shi Jin (5), Signal-processing (LEADS), Southeast University, Tsinghua University, Xiaohu You (5), Xiaozhen Liu (1), Zaichen Zhang (4

arxiv:1804.06745 v1 · 2018-04-17 · eess.SP · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QTP6T6JJ7UYJ3Z26ILPO5EZ444}

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	2026-05-18T00:18:05.849721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84dfe9f929fd309de75e42deee933ce70b48a318faa882e69892418603102192

Aliases

arxiv: 1804.06745 · arxiv_version: 1804.06745v1 · doi: 10.48550/arxiv.1804.06745 · pith_short_12: QTP6T6JJ7UYJ · pith_short_16: QTP6T6JJ7UYJ3Z26 · pith_short_8: QTP6T6JJ

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/QTP6T6JJ7UYJ3Z26ILPO5EZ444 \
  | 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: 84dfe9f929fd309de75e42deee933ce70b48a318faa882e69892418603102192

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "589aa45994ba8ec3bf8752129dae31b9217c94cf1a57e32661ac2bb4311f60cc",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-04-17T15:51:46Z",
    "title_canon_sha256": "fd359fab50eee56b0e85672842e8cc2be7dbe33a76f761f7f4dd85688daeb7a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.06745",
    "kind": "arxiv",
    "version": 1
  }
}