1 research outputs found
Favorable Propagation with User Cluster Sharing
We examine the favorable propagation (FP) behavior of a massive multi-user
multiple-input-multiple-output (MU-MIMO) system equipped with a uniform linear
array (ULA), horizontal uniform rectangular array (HURA) or uniform circular
array (UCA) using a ray-based channel model with user cluster sharing. We
demonstrate FP for these systems and provide analytical expressions for the
mean-squared distance (MSD) of the FP metric from its large-system limit for
each of the aforementioned topologies. We use these results to examine the
detrimental effects of user cluster sharing on FP behavior, and demonstrate the
superior performance of the ULA as compared to the UCA and the HURA with equal
inter-element spacing. Although cluster sharing has a negative impact on FP for
finite arrays, we additionally examine the asymptotic rate of convergence to FP
as a function of array size and show that this rate is unchanged with or
without user cluster sharing.Comment: 7 pages, 3 figures, Accepted for publication in IEEE PIMRC 202