Decoding and detection for magnetic recording channel using single parity coding

Almustapha, Mohammed D.; Abdulrazaq, Muhammad Bashir; Ahmed, Mohammed; Marcel, Ambroze A; Paul, Davey

doi:10.1109/apmrc.2016.7524256

Cited by 1 publication

(3 citation statements)

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“…The choice of the odd parity is to serve as a run-length limited (RLL) code for the media. A previous investigation shows that separating the first and the second parity bits with a dithered relative prime (DRP) interleaver improves performance [8]. In this paper, we present two encoding approaches: The first approach applies the parity-check constraint along the down track direction only, with the first and second parity bits separated by a DRP interleaver.…”

Section: Overview Of Coding Channel and Detectormentioning

confidence: 99%

“…Electronic noise, and other noises of significant importance are modelled as Additive white Gaussian noise (AWGN) nb,t with standard deviation σw. These are added to the final signal as represented in equation 5 [8]. Equations (4) and (5) are therefore, used in this paper for modelling the SMR channel.…”

Section: B Smr Channelmentioning

confidence: 99%

“…where xk is the received symbol or bit at time k, yn is the ideal transmitted data for branch n at time k, and σ 2 is the channel noise variance. Equations (7) and (8) are used in the detection process.…”

Section: Maximum a Posteriori (Map)/bcjr Detectionmentioning

confidence: 99%

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Multi-track 2D joint signal detection and decoding for TDMR system using single parity-check coding

Almustapha

Ahmed

Ambroze

et al. 2017

2017 IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE)

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A combination of single parity check-code and Two-Dimensional (2D) Bahl Cocke Jelinek Raviv (BCJR) detector is used in this paper for joint detection and decoding of 2D interference channel. This is applied to a multi-track two dimensional magnetic recording (TDMR) system. The multi-level 2D BCJR detector handled the code constraint while performing joint detection and single parity decoding. Two coding approaches are presented in this paper: 1) parity bits are applied along-track direction only, separated with a dithered relative prime (DRP) interleaver, and 2) parity bits are applied in both along-track and across-tracks directions. The results show that the new constrained coded multi-track 2D BCJR joint detector provides improved performance with low detection complexity.

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Section: Overview Of Coding Channel and Detectormentioning

confidence: 99%

Section: B Smr Channelmentioning

confidence: 99%