Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Bilinear Equalizer for Massive MIMO Systems   We present a novel approach for low-complexity equalizer design well-suited
for cellular massive MIMO systems. Our design allows to exploit the channel
structure in terms of covariance matrices to improve the performance in the
face of pilot-contamination, while basically keeping the complexity of a
matched filter. This is achieved by restricting the equalizer to functions
which are bilinear in the received data signals and the observations from a
training phase. The proposed design generalizes several previous approaches to
equalizer design for massive MIMO. We show by asymptotic analysis that with the
proposed design the achievable rate grows without bound for growing numbers of
antennas even in the presence of pilot-contamination. We demonstrate with
numerical results that the proposed design is competitive with more complex
approaches in a practical cellular setup.

6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas