Construction and Performance Evaluation of Rate 9/10 Trellis Codes for PRML Systems

2 Citations 18 References

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Other Title
  • PRML方式のための符号化率9/10トレリス符号の構成とその性能評価

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Description

A method to construct trellis codes matched to class-4 partial response(PR4)and extended class-4 partial response(EPR4)channels is studied. This coding method is based on the technique of set partitioning. In our method, all allowable output symbols from a partial response channel are defined as a signal constellation in Euclidean space and each subset decomposition of defined signal constellation is adopted in a multimensional Euclidean space. Using this code construction technique, we can find opitimal trellis coding and analyze a code structure easily and effectively. As a result of this coding technique, it is shown that the rate 9/10 trellis codes with a constraint length of 6 or 7 can provide about 2.4, 2.3dB advantage over the conventional rate 8/9 (0, 4/4) code in a PR4ML and 16/17 (0, 6/6) code in an EPR4ML equalizations at a bit error rate of 10^<-4>, respectively.

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Details 詳細情報について

  • CRID
    1570572702430952320
  • NII Article ID
    110003186381
  • NII Book ID
    AN10013050
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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