Pith Number

pith:4TZDC3EQ

pith:2015:4TZDC3EQQ6XL6J5REI4N7FOS47

not attested not anchored not stored refs pending

Distributed Channel Estimation and Pilot Contamination Analysis for Massive MIMO-OFDM Systems

Alam Zaib, Anum Ali, Mudassir Masood, Tareq Y. Al-Naffouri, Weiyu Xu

arxiv:1507.08150 v1 · 2015-07-29 · 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{4TZDC3EQQ6XL6J5REI4N7FOS47}

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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	2026-05-18T01:36:08.236396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4f2316c9087aebf27b12238df95d2e7e5e143f9c50ba1577389ab0c8427edd6

Aliases

arxiv: 1507.08150 · arxiv_version: 1507.08150v1 · doi: 10.48550/arxiv.1507.08150 · pith_short_12: 4TZDC3EQQ6XL · pith_short_16: 4TZDC3EQQ6XL6J5R · pith_short_8: 4TZDC3EQ

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/4TZDC3EQQ6XL6J5REI4N7FOS47 \
  | 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: e4f2316c9087aebf27b12238df95d2e7e5e143f9c50ba1577389ab0c8427edd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50823058d48778438e15dc8b313aaeb4fbafb94d94430d75cbc2a0837e786a34",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-07-29T14:12:44Z",
    "title_canon_sha256": "3beea1cbe892fb679fcb82e4152682f6482c7d1301bd433fc75fd39e86347f16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08150",
    "kind": "arxiv",
    "version": 1
  }
}