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3. Statistics of Measured Body Loss for Mobile Phones

Author

Nielsen, Jesper O., Pedersen, Gert F., Olesen, Kim, and Kovacs, Istvan Z.

Subjects
Mobile communication systems -- Equipment and supplies, Antennas (Electronics) -- Analysis, Hand-held terminals -- Analysis, Radio equipment -- Analysis, Business, Computers, Electronics, Electronics and electrical industries
Abstract

The variation in body loss for different users of a cellular handset is investigated. Measurements involving 200 test users of mobile communications (GSM) handsets have been performed and statistics are presented for a handset with three types of antennas. Differences in the body loss of up to 10 dB have been observed between users, thus indicating that body loss measurements for handsets should include several test persons. Depending on the antenna type, 8-13 test persons are required to obtain an estimate of the mean body loss with a [+ or-] dB confidence interval at a 90% level. Index Terms--Antenna performance, body loss, handset antennas, mobile communication, radio propagation measurements, user influence.

Published
2001

10. Antenna Pattern Impact on MIMO OTA Testing

Author

Fan, Wei, primary, Nielsen, Jesper O., additional, Franek, Ondrej, additional, Carreno, Xavier, additional, Ashta, Jagjit S., additional, Knudsen, Mikael B., additional, and Pedersen, Gert F., additional

Published
2013
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23. MIMO throughput measurement in an urban area using a LTE mobile terminal.

Author

Sakata, Tsutomu, Yamamoto, Atsushi, Olesen, Kim, Nielsen, Jesper O., and Pedersen, Gert F.

Abstract

Recently, Long Term Evolution (LTE) cellular mobile communication has been started in a number of countries. The LTE system employs a Multi Input Multi Output (MIMO) antenna array for achieving high-data-rate wireless communication. The radio propagation characteristics and antenna array configuration have a great impact on the MIMO performance [1]. Thus, MIMO propagation tests have been carried out to evaluate the MIMO characteristics in realistic environments [2]. So far, the MIMO channel capacity has been used in almost all investigations. However, the MIMO capacity is not sufficient for estimating MIMO data transmission characteristics in an actual wireless communication system. [ABSTRACT FROM PUBLISHER]

Published
2012

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