Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low Complexity Null Subcarrier-Assisted OFDM PAPR Reduction with
  Improved BER   In this letter, we propose a low complex data-null subcarrier switching-based
peak-to-average power ratio (PAPR) reduction scheme for the orthogonal
frequency division multiplexing (OFDM) systems, which provides improved bit
error rate. We perform the switching between the data and null subcarriers in
such a way that distance between any two switched-null subcarriers remains
constant. This method can achieve up to 3 dB signal-to-noise ratio gain and
shed the system complexity by more than 98% of the conventional systems, with a
slight compromise of the PAPR reduction capability.

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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ex