Pith Number

pith:WVKCPHIW

pith:2025:WVKCPHIW4AGGGWLMPJF3OJ7LMN

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Performance Analysis of Single-Antenna Fluid Antenna Systems via Extreme Value Theory

Chan-Byoung Chae, Guangyue Lu, Kai-Kit Wong, Rui Xu, Xiaoli Chu, Yinghui Ye

Fluid antenna systems under full correlation admit closed-form outage and capacity via extreme value distributions.

arxiv:2511.02572 v2 · 2025-11-04 · cs.IT · math.IT

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Claims

C1strongest claim

This paper develops a novel performance evaluation framework for FAS operating under fully correlated Rayleigh fading, by modeling the FAS channel through extreme value distributions (EVDs). Closed-form expressions for the outage probability (OP) and ergodic capacity (EC) are then derived.

C2weakest assumption

The FAS channel under full correlation can be accurately approximated by the Gumbel or GEV distribution whose parameters are obtained via the maximum likelihood criterion as explicit functions of the number of ports and antenna aperture size.

C3one line summary

Develops EVD-based approximations for the FAS channel under full correlation to obtain closed-form OP and EC expressions.

References

26 extracted · 26 resolved · 1 Pith anchors

[1] A tutorial on fluid antenna system for 6G networks: Encompassing communication theory, optimization methods and hard- ware designs 2025

[2] A new analytical ap- proximation of the fluid antenna system channel 2023

[3] G. L. St ¨uber,Principles of mobile communication, Springer Science & Business Media, 2013 2013

[4] Fluid antenna system: New insights on outage probability and diversity gain 2024

[5] New generalised approximation meth- ods for the cumulative distribution function of arbitrary multivariate Rayleigh random variables 2020

Receipt and verification

First computed	2026-06-09T02:07:12.098445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b554279d16e00c63596c7a4bb727eb63582606fb4b6e939cae9477296a344510

Aliases

arxiv: 2511.02572 · arxiv_version: 2511.02572v2 · doi: 10.48550/arxiv.2511.02572 · pith_short_12: WVKCPHIW4AGG · pith_short_16: WVKCPHIW4AGGGWLM · pith_short_8: WVKCPHIW

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/WVKCPHIW4AGGGWLMPJF3OJ7LMN \
  | 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: b554279d16e00c63596c7a4bb727eb63582606fb4b6e939cae9477296a344510

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d269e4db948e3e55f9a5523464021ad2ac4cd7221a37ddf7a5494ae6e5d404e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2025-11-04T13:48:14Z",
    "title_canon_sha256": "b9c1657875fd77a70ae8d699d8e5aa78535d51c9aad3fc59d3453ca68c066931"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.02572",
    "kind": "arxiv",
    "version": 2
  }
}