منابع مشابه
Cell-Free Massive MIMO with Limited Backhaul
We consider a cell-free Massive multiple-input multiple-output (MIMO) system and investigate the system performance for the case when the quantized version of the estimated channel and the quantized received signal are available at the central processing unit (CPU), and the case when only the quantized version of the combined signal with maximum ratio combining (MRC) detector is available at th...
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We propose a strategy for orthogonal downlink pilot assignment in cell-free massive MIMO (multiple-input multipleoutput) that exploits knowledge of the channel state information, the channel hardening degree at each user, and the mobility conditions for the users. These elements, properly combined together, are used to define a user pilot utility metric, which measures the user’s real need of a...
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In this paper, we consider the max-min signal-tointerference plus noise ratio (SINR) problem for the uplink transmission of a cell-free Massive multiple-input multipleoutput (MIMO) system. Assuming that the central processing unit (CPU) and the users exploit only the knowledge of the channel statistics, we first derive a closed-form expression for uplink rate. In particular, we enhance (or maxi...
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The increasing demand for wireless data services requires massive network densification which is neither economically nor ecologically feasible. The concept of cell-size reduction provides an effective and simple solution to this problem. Small-Cell Networks (SCN) are one of the promising architectures based on this idea. Generally, a SCN is a cellular network where the size of the cells are ve...
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ژورنال
عنوان ژورنال: IEEE Transactions on Communications
سال: 2020
ISSN: 0090-6778,1558-0857
DOI: 10.1109/tcomm.2020.2987311