Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How to Increase the Achievable Information Rate by Per-Channel
  Dispersion Compensation   Deploying periodic inline chromatic dispersion compensation enables reducing
the complexity of the digital back propagation (DBP) algorithm. However,
compared with nondispersion-managed (NDM) links, dispersion-managed (DM) ones
suffer a stronger cross-phase modulation (XPM). Utilizing per-channel
dispersion-managed (CDM) links (e.g., using fiber Bragg grating) allows for a
complexity reduction of DBP, while abating XPM compared to DM links. In this
paper, we show for the first time that CDM links enable also a more effective
XPM compensation compared to NDM ones, allowing a higher achievable information
rate (AIR). This is explained by resorting to the frequency-resolved
logarithmic perturbation model and showing that per-channel dispersion
compensation increases the frequency correlation of the distortions induced by
XPM over the channel bandwidth, making them more similar to a conventional
phase noise. We compare the performance (in terms of the AIR) of a DM, an NDM,
and a CDM link, considering two types of mismatched receivers: one neglects the
XPM phase distortion and the other compensates for it. With the former, the CDM
link is inferior to the NDM one due to an increased in-band signal--noise
interaction. However, with the latter, a higher AIR is obtained with the CDM
link than with the NDM one owing to a higher XPM frequency correlation. The DM
link has the lowest AIR for both receivers because of a stronger XPM.

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The categories of this paper are: gr-qc
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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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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: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: astro-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: stat