A new detection method for noisy channels with time-varying offset

Kees A. Schouhamer Immink, Jos H. Weber

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Abstract

We consider noisy communications and storage systems that are hampered by varying offset of unknown magnitude such as low-frequency signals of unknown amplitude added to the sent signal. We study and analyze a new detection method whose error performance is independent of both unknown base offset and offset's slew rate. The new method requires, for a codeword length n ≥ 12, less than 1.5 dB more noise margin than Euclidean distance detection. The relationship with constrained codes based on mass-centered codewords and the new detection method is discussed.

Original languageEnglish
Pages (from-to)3108-3114
Number of pages7
JournalIEEE Transactions on Information Theory
Volume68
Issue number5
DOIs
Publication statusPublished - 2022

Keywords

  • channel mismatch
  • Codes
  • constrained code
  • Error analysis
  • Minimization
  • Noise measurement
  • Nonvolatile memory
  • Pearson code
  • Pearson distance
  • Redundancy
  • Signal to noise ratio
  • slew rate
  • varying offset

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