Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Massive MIMO with Spatially Correlated Rician Fading Channels   This paper considers multi-cell Massive MIMO (multiple-input multiple-output)
systems where the channels are spatially correlated Rician fading. The channel
model is composed of a deterministic line-of-sight (LoS) path and a stochastic
non-line-of-sight (NLoS) component describing a practical spatially correlated
multipath environment. We derive the statistical properties of the minimum mean
squared error (MMSE), element-wise MMSE (EW-MMSE), and least-square (LS)
channel estimates for this model. Using these estimates for maximum ratio (MR)
combining and precoding, rigorous closed-form uplink (UL) and downlink (DL)
spectral efficiency (SE) expressions are derived and analyzed. The asymptotic
SE behavior when using the different channel estimators are also analyzed.
Numerical results show that the SE is higher when using the MMSE estimator than
the other estimators, and the performance gap increases with the number of
antennas.

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The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
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The categories of this paper are: nlin
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
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The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
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The categories of this paper are: stat
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph