نتایج جستجو برای: handset antenna

تعداد نتایج: 45740  

2000
J. Salo B. Badic P. Suvikunnas H. Weinrichter M. Rupp P. Vainikainen

Based on urban microcell channel measurements, the bit error rate performance of a space-time block code with four transmit antennas using various dual-branch receive antenna configurations, is evaluated. It is demonstrated that with realistic handset antennas, it is possible to achieve performance very close to that of the theoretical uncorrelated Rayleigh case, although proximity of operator ...

Journal: :International Journal of Antennas and Propagation 2013

Journal: :IEE Proceedings - Microwaves, Antennas and Propagation 1999

Journal: :Electronics 2022

In multipath environments, multiple-input multiple-output (MIMO) terminals typically suffer from non-zero correlations due to limited handset space and power imbalances different antenna efficiencies or partial hand blockage. These antenna–channel impairments can lead significant throughput performance degradation of MIMO terminals. The multiplexing efficiency was proposed quantitatively assess...

Journal: :Sensors 2021

The increasing popularity of using wireless devices to handle routine tasks has increased the demand for incorporating multiple-input-multiple-output (MIMO) technology utilize limited bandwidth efficiently. presence comparatively large space at base station (BS) makes it straightforward exploit MIMO technology’s useful properties. From a mobile handset point view, and handset, complex procedure...

Journal: :IEEE Transactions on Antennas and Propagation 2017

1999
Kim Olesen

Performance evaluation of antennas used in the a mobile radio channel is a non-trivial task because of the multipath propagation inherent to this type of channel. A useful measure of the performance of a given antenna is the mean effective gain (MEG) which is the mean received power relative to some reference. In this paper computation of the MEG is investigated based on measurements of the 3D ...

1999
Heikki Laitinen Kimmo Kalliola Pertti Vainikainen

In mobile radio reception, signals typically arrive at the receiver antenna from a wide range of directions due to multipath propagation. This can be described by a direction-of-arrival (DoA) distribution of the propagation environment. If the DoA distribution is known, the Doppler spectrum and the autocorrelation function can be directly computed [1]. Furthermore, handset antenna performance c...

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