نتایج جستجو برای: handset antenna
تعداد نتایج: 45740 فیلتر نتایج به سال:
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 ...
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...
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...
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 ...
ANGULAR SIGNAL DISTRIBUTION AND CROSS-POLARIZATION POWER RATIO SEEN BY A MOBILE RECEIVER AT 2.15 GHz
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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