On the Exposure Dose Minimization of Multi-antenna Multi-carrier System Users

2022 · Benefit · Insufficient evidence

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BenefitInsufficient evidencePaper 802

Study snapshot

Publicationmanual · 2022

Study typeengineering

Reported directionBenefit

Evidence ratingInsufficient

Abstract

On the Exposure Dose Minimization of Multi-antenna Multi-carrier System Users F. Heliot, T. Brown. On the Exposure Dose Minimization of Multi-antenna Multi-carrier System Users.IEEE Transactions on Vehicular Technology. Apr 27, 2022. doi: 10.1109/TVT.2022.3170606. Abstract From the fourth generation (4G) of cellular systems onward, wireless personal devices (WPDs) support multi- input multi-output (MIMO) communication. However, the impact of MIMO communication on the electromagnetic field (EMF) of WPD users has yet to be fully understood and analyzed at the system level. In this paper, we first provide a generic model for assessing the individual exposure dose of multi-antenna WPD users in a multi-user multi-carrier communication system. An optimization framework for minimizing this exposure dose is then developed based on our exposure model. This framework helps us to identify a new criterion, i.e., the ratio between the normalized exposure dose and the channel to noise ratio (CNR), as the main system level criterion for minimizing the individual exposure dose of multi-antenna WPD users. This criterion is further integrated in the design of two novel centralized resource allocation schemes that take advantage of the multiple antennas at the WPD to minimize the per-user exposure dose, when full or limited knowledge of each user channel is available. Our new schemes can significantly reduce the individual exposure dose of WPD users (by approximately $80\%$) in comparison with the most relevant existing resource allocation schemes. Our results also provide insights into the logarithmic relationship between the per-user exposure dose and the number of receive antennas (or the number of time slots), and how such a parameter can be exploited to further reduce the exposure and/or provide a higher SE while maintaining a low exposure dose. ieeexplore.ieee.org

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionbenefit

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

The paper proposes a generic system-level model to assess individual exposure dose for multi-antenna wireless personal device (WPD) users in a multi-user multi-carrier system and develops an optimization framework to minimize this dose. Two centralized resource allocation schemes using multiple antennas are reported to reduce individual exposure dose by approximately 80% compared with relevant existing schemes, and results suggest a logarithmic relationship between per-user exposure dose and the number of receive antennas (or time slots).

Outcomes measured

individual exposure dose
per-user exposure dose
spectral efficiency (SE)

Limitations

No specific frequency band, SAR values, or exposure duration are reported in the abstract.
Study appears to be a modeling/optimization and resource-allocation design; no human health outcomes are assessed in the abstract.
Comparators and evaluation setup details (e.g., simulation parameters, scenarios) are not described in the abstract.

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": null,
    "source": "mobile phone",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "individual exposure dose",
    "per-user exposure dose",
    "spectral efficiency (SE)"
  ],
  "main_findings": "The paper proposes a generic system-level model to assess individual exposure dose for multi-antenna wireless personal device (WPD) users in a multi-user multi-carrier system and develops an optimization framework to minimize this dose. Two centralized resource allocation schemes using multiple antennas are reported to reduce individual exposure dose by approximately 80% compared with relevant existing schemes, and results suggest a logarithmic relationship between per-user exposure dose and the number of receive antennas (or time slots).",
  "effect_direction": "benefit",
  "limitations": [
    "No specific frequency band, SAR values, or exposure duration are reported in the abstract.",
    "Study appears to be a modeling/optimization and resource-allocation design; no human health outcomes are assessed in the abstract.",
    "Comparators and evaluation setup details (e.g., simulation parameters, scenarios) are not described in the abstract."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "MIMO",
    "multi-carrier",
    "wireless personal devices",
    "EMF exposure",
    "exposure dose minimization",
    "resource allocation",
    "centralized schemes",
    "channel to noise ratio (CNR)",
    "spectral efficiency"
  ],
  "suggested_hubs": [
    {
      "slug": "mobile-phones",
      "weight": 0.62,
      "reason": "Focuses on wireless personal devices/users in cellular systems and minimizing user exposure dose."
    },
    {
      "slug": "rf-engineering",
      "weight": 0.86,
      "reason": "Develops system-level exposure model and resource allocation schemes to reduce exposure dose in MIMO multi-carrier systems."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1109/tvt.2022.3170606
PubMed: Not supplied

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