Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: IMNet: A Learning Based Detector for Index Modulation Aided MIMO-OFDM
  Systems   Index modulation (IM) brings the reduction of power consumption and
complexity of the transmitter to classical multiple-input multiple-output
orthogonal frequency division multiplexing (MIMO-OFDM) systems. However, due to
the introduction of IM, the complexity of the detector at receiver is greatly
increased. Furthermore, the detector also requires the channel state
information at receiver, which leads to high system overhead. To tackle these
challenges, in this paper, we introduce deep learning (DL) in designing a
non-iterative detector. Specifically, based on the structural sparsity of the
transmitted signal in IM aided MIMO-OFDM systems, we first formulate the
detection process as a sparse reconstruction problem. Then, a DL based detector
called IMNet, which combines two subnets with the traditional least square
method, is designed to recover the transmitted signal. To the best of our
knowledge, this is the first attempt that designs the DL based detector for IM
aided systems. Finally, to verify the adaptability and robustness of IMNet,
simulations are carried out with consideration of correlated MIMO channels. The
simulation results demonstrate that the proposed IMNet outperforms existing
algorithms in terms of bit error rate and computational complexity under
various scenarios.

20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
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The categories of this paper are: stat
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The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph