A new performance evaluation technique for iteratively decoded magnetic recording systems

Naveen Mysore, Jan Bajcsy, Mehmet Akçakaya, Hisashi Kobayashi

Research output: Contribution to journalArticlepeer-review


This paper proposes a performance evaluation technique for iteratively (turbo) equalized magnetic recoding systems. The technique decomposes the bit-error rate (BER) function into an integral of two functions. The first function has a closed form expression and is determined by the characteristics of the noise. The second function depends on the parameters of the concatenated system and can be approximated using an interpolation between sample points that rely on a small number of simulations. We present numerical and simulated BER results for coded PR4 and EPR4 channels with turbo equalization. In the "waterfall region" of the BER curves, the calculated and simulated results are within about 0.1 dB.

Original languageEnglish (US)
Pages (from-to)2986-2988
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
StatePublished - Oct 2005

Bibliographical note

Funding Information:
This work was supported in part by the National Science and Engineering Research Council (Canada) and the Canadian Foundation for Innovation.


  • Iterative equalization
  • Magnetic recording systems
  • Partial response channels
  • Performance evaluation

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