Design and Analysis of LoS-MIMO Systems With Uniform Circular Arrays
نویسندگان
چکیده
We consider the design of a uniform circular array (UCA) system under misalignment over line-of-sight (LoS) channels. UCAs have been considered as useful structures since their LoS channels can be diagonalized without channel state information at transmitter (Tx). However, such characteristic holds only when transceiver arrays are perfectly aligned. To overcome this difficulty, we propose an optimal method and architectures for UCA systems that achieve capacity knowledge angles. end, first verify singular values misaligned independent tilting center-shift small relative rotation, but fluctuate with Radii Product to Distance Ratio (RPDR). Using result, present performs one-dimensional search RPDR maximize capacity, show simple zero-forcing (ZF) receiver maximum because criteria. Additionally, low-complexity precoding scheme in which criteria cannot fulfilled. The simulation results demonstrate validity proposed architectures.
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ژورنال
عنوان ژورنال: IEEE Transactions on Wireless Communications
سال: 2021
ISSN: ['1536-1276', '1558-2248']
DOI: https://doi.org/10.1109/twc.2021.3060021