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Due to the small wavelengths at millimetre wave frequencies, antenna arrays with dozens of elements fit easily even in hand-held devices. As RF chains are power hungry and costly, all-digital approaches are impractical and analogue-digital co-designs are likely to come. Common for all approaches is a dimensional reduction of the large MIMO channel. This study compares Antenna Selection (AS) and Hybrid...
A critical factor in the deployment of multiple input multiple-output systems is the cost of multiple analog transmit/receive chains. This problem can be mitigated by antenna subset selection at the transmitter/receiver. With antenna selection, a small number of analog radio frequency chains are multiplexed between a much larger number of transmit/receive antenna elements. In this paper, we present...
The objective of this paper is to evaluate the performance of dual-polarized Multiple-Input Multiple-Output (MIMO) systems, compact in antenna array size and with reduced radio frequency complexity. We compare co-located antenna array structures with their spatial counterpart while deploying receive antenna selection. To this purpose, the performance in terms of MIMO maximum mutual information is...
In this work we analyze the combined effects of array orientation/rotation and antenna cross polarization discrimination on the performance of dual-polarized systems with receive antenna selection. We start our analysis with a 1 out of N selection and extend it to M out of N receive antenna selection, for which we derive numerical expressions for the effective channel gains. These expressions are...
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