Diversity Gain and MIMO Capacity for Nonisotropic Environments Using a Reverberation Chamber

Abstract

Abstract-Several physical parameters of realistic nonisotropic environments have been recently emulated with reverberation chambers. In this letter, the different performance in terms of diversity gain and multiple-input-multiple-output (MIMO) capacity of the same linear MIMO array in different nonisotropic propagating scenarios is demonstrated with a reverberation chamber (RC) for the first time. This could be useful for designing antenna arrays in handset MIMO.Index Terms-Diversity gain, multiple-input-multiple-output (MIMO) capacity, reverberation chamber (RC).

Sample Selection Algorithms for Enhanced MIMO Antenna Measurements Using Mode-Stirred Reverberation Chambers

“…Since the dipoles do not receive the expected multipath component on the absorbed side, a non-isotropic scattering scenario is obtained with reduced multipath component (MPC) compared to the isotropic scenario 'A'. Details are provided in [18], [19].…”

“…Likewise, when the initial data set was that of measured scenario D in [18], [19], final sample-selected results suffered from a lack of accuracy and percentage of remaining samples in comparison to the results obtained when using other initial data sets. Since scenario D in [18], [19] represents the narrowest angular spread (AS), it is also easily understood that any sample-selected algorithm encounters difficulties extracting different PDFs from such extreme initial data. This, however, serves for suggesting that rich isotropic Rayleigh-fading initial data sets should be used for sample-selection techniques.…”

Advances in mode-stirred reverberation chambers for wireless communication performance evaluation

“…One recent contribution for enhanced emulation using MSCs is the opening of the door [13]. The aperture of the door transforms one wall that was perfectly electric into a perfectly magnetic wall, but at the same time with a varying aperture degree.…”

HSDPA Throughput Performance With Limited Number of Signal Paths

“…Emulation of multipath environments can be easily performed using mode-stirred chambers (MSCs) [7], which have become one of the established techniques to do over-the-air (OTA) measurements during the last few years. However, as it is shown in [3], the capacity of multiple-input-multiple-output (MIMO) devices is affected when they are working in environments where there is not a large number of signal paths (as rural ones).…”