IDEAS home Printed from https://ideas.repec.org/a/spr/envsyd/v27y2007i4d10.1007_s10669-007-9056-1.html
   My bibliography  Save this article

An investigation of the effects from the user’s hand and head over received level and adaptive power control of a GSM mobile phone in typical operating environment

Author

Listed:
  • Nikolay T. Atanasov

    (Higher College of Telecommunications and Posts)

  • Gabriela L. Atanasova

    (Higher College of Telecommunications and Posts)

Abstract

Current evolution of wireless personal communications has necessitated a comprehensive understanding of electromagnetic interactions between handset antennas and nearby human body. In this work the handset–human body interactions were evaluated in various configurations (with and without user’s hand; with and without user’s head, and combinations of them) in order to obtain statistical averages of the overall performance for system link evaluations. The measurements were performed using the random-field measurement (RFM) method, and thus the acquisition of large amounts of data about human–mobile phone interactions in typical operating environment with measured the received RF signal strength (RXLEV), and the output power level (TXLEV) on mobile station. The RXLEV and the TXLEV was measured over the air interface in the networks on two Bulgarian GSM mobile operators (Mtel and Vivatel). Both uplink and downlink measurements were performed in urban area in three cities. Each measurements were carried out in a building included both line-of-sight and non-line-of-sight propagation of the electromagnetic waves between mobile station and base station. The results showed that the user’s hand and head induces more significant changes on the received RF signal strength in case when broadcast control channel (BCCH) levels are up to −60 dBm. Also the alterations of receiving RF signal strength and output power level of the MS are influence stronger from the larger size of the hand and head of user. The influence from presence of the head and hand of the subscriber in talk position over the alteration of the receiving RF signal strength is in boundaries from 14.21 dBm to 19.1 dBm (man) and from 8.5 dBm to 12.05 dBm (woman). The presence of the user’s hand and head increased the output power level of mobile station with 12 dBm to 14 dBm (man) and with 10 dBm to 12 dBm (woman) compare to output power level without user’s hand and head.

Suggested Citation

  • Nikolay T. Atanasov & Gabriela L. Atanasova, 2007. "An investigation of the effects from the user’s hand and head over received level and adaptive power control of a GSM mobile phone in typical operating environment," Environment Systems and Decisions, Springer, vol. 27(4), pages 585-591, December.
    • Handle: RePEc:spr:envsyd:v:27:y:2007:i:4:d:10.1007_s10669-007-9056-1
    DOI: 10.1007/s10669-007-9056-1
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s10669-007-9056-1
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1007/s10669-007-9056-1?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Nikolay Todorov Atanasov & Gabriela Lachezarova Atanasova & Daniel Adrian Gârdan & Iuliana Petronela Gârdan, 2023. "Experimental Assessment of Electromagnetic Fields Inside a Vehicle for Different Wireless Communication Scenarios: A New Alternative Source of Energy," Energies, MDPI, vol. 16(15), pages 1-22, July.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:envsyd:v:27:y:2007:i:4:d:10.1007_s10669-007-9056-1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.