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The use of multiple antennas at both ends of a wireless link, known as multiple-input multiple-output (MIMO) wireless, has been shown to offer significant improvement in link reliability and spectral efficiency through space-time coding and spatial multiplexing respectively. In this contribution, a novel relaying strategy that uses MIMO relays in a two-hop wireless network is proposed to support multiuser...
This paper investigates the applicability of multiple-input-multiple-output (MIMO) technology to broadband fixed wireless access (BFWA) systems operating in the 10-66 GHz frequency range. In order to employ the MIMO principle at these frequencies, the spatial channel benefits that may arise from the rainfall spatial inhomogeneity are more relevant since multipath is insignificant. Therefore, a special...
Using multiple antennas in wireless communication systems proposes some degrees of freedom in system design, these degrees of freedom can be applied to improve the system reliability by using space time block coding (STBC) which provides diversity gain. Degrees of freedom also can be applied to increase the system capacity using spatial multiplexing (SM) methods. It is possible to achieve a trade-off...
In multi-user multiple-input multiple-output (MU-MIMO) systems, spatial multiplexing can be employed to increase the throughput without the need for multiple antennas and expensive signal processing at the user equipments. In theory, MU-MIMO is also more immune to most of propagation limitations plaguing single-user MIMO (SU-MIMO) systems, such as channel rank loss or antenna correlation. However,...
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