Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Robust Low-Complexity MIMO Detector for Rank 4 LTE/LTE-A Systems   This paper deals with MIMO detection for rank 4 LTE systems. The paper
revolves around a previously known detector [1, by Inkyu Lee, TCOM'2010] which
we shall refer to as RCSMLD
(Reduced-Constellation-Size-Maximum-Likelihood-Detector). However, a direct
application of the scheme in [1, by Inkyu Lee, TCOM'2010] to LTE/LTE-A rank 4
test cases results in unsatisfactory performance. The first contribution of the
paper is to introduce several modifications that can jointly be applied to the
basic RCSMLD scheme which, taken together, result in excellent performance. Our
second contribution is the development of a highly efficient hardware structure
for RCSMLD that allows for an implementation with very few multiplications.

14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex