Proceedings ArticleDOI
Realized diversity gain of active DECT phones in talk position measured in reverberation chamber
Magnus Franzen,Charlie Orlenius,Per-Simon Kildal,G. Nilsson +3 more
- pp 3565-3568
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TLDR
In this paper, the authors describe the reverberation chamber as a rectangular metal cavity that supports several modes, each mode can be interpreted as eight plane waves propagating in different directions.Abstract:
The reverberation chamber is a rectangular metal cavity that supports several modes. Each mode can be interpreted as eight plane waves propagating in different directions. To simulate a rich scattering environment, the modes are stirred. The net effect is fading with Rayleigh statistics, being very similar to what handheld units experience in indoor and urban areas. DECT is an acronym for Digital Enhanced Cordless Telecommunications. The cordless units receive and transmit on the same frequency, which in Europe lies in the band 1880-1900 MHz, and this makes it easy to implement antenna diversity on transmit. The maximum output power from a DECT unit is limited to 24 dBm.read more
Citations
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Proceedings ArticleDOI
Three Fast Ways of Measuring Receiver Sensitivity in a Reverberation Chamber
TL;DR: In this article, the authors describe three alternative methods to measure the receiver sensitivity in a reverberation chamber, each of which can be done in less than 10 minutes which is much faster than measurements in anechoic chamber.
Proceedings ArticleDOI
Measuring the Impact of Multiple Terminal Antennas on the Bit Rate of Mobile Broadband Systems Using Reverberation Chambers
TL;DR: In this article, the authors measured the diversity gain and MIMO capacity in a reverberation chamber and showed that it is the only measurement instrument to directly measure the SNR increase of diversity antennas or the increase in capacity of using multiple antennas at both the radio base station and the terminal.
Proceedings ArticleDOI
Fast measurements with high repeatability of antenna efficiency and over the air (OTA) parameters in reverberation chambers
TL;DR: In this paper, the authors propose a reference environment with a Rayleigh distribution suitable for tests of small antennas and devices with small antennas such as mobile phones, laptops, PDAs, etc.
Overview of Antenna and Over The Air (OTA) Measurements in Reverberation Chambers
K. S Lee,M. Andersson +1 more
TL;DR: In this paper, the authors propose a reference environment with a Rayleigh distribution suitable for tests of small antennas and devices with small antennas such as mobile phones, laptops, PDAs, etc. The accuracy of a small reverberation chamber is similar or better to large anechoic chambers and measurement times for antenna efficiency, TRP and TIS are between 3 - 15 times faster depending on type of test and communication protocol.
References
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Journal ArticleDOI
Definition of effective diversity gain and how to measure it in a reverberation chamber
TL;DR: In this paper, the authors defined an effective diversity gain, which is an absolute measure of diversity gain and can therefore be used to compare different diversity antennas, and also showed how the effective diversity gains can be measured in a reverberation chamber.
Proceedings ArticleDOI
Measurements of realized diversity gain of active DECT phones and base-stations in a reverberation chamber
TL;DR: In this article, the authors present different setups to measure the diversity gain of active DECT telephones and base stations by use of a reverberation chamber, when the integrated software in the device provides the diversity combination.
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