Proceedings of GLOBECOM '95
DOI: 10.1109/glocom.1995.501994
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A signal space representation of fixed delay tree search for use with d=0 codes

Abstract: This paper addresses the optimality of the fixed delay tree search with decision feedback (FDTSIDF) detector for data without a minimum run length constraint. The evaluation is performed by comparing the minimum distance for FDTSIDF with the minimum distance associated with a maximum likelihood sequence detector (MLSD). Using this distance information, potential improvements through coding areaddressed.An alternative realization to the direct implementation of FDTS/DF is considered by examining the detection p… Show more

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Cited by 5 publications
(6 citation statements)
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“…A logic output of one corresponds to NRZ , and a logic value of zero for is interpreted as NRZ . Similar structures for were presented in [20] and [21]. In terms of hardware, the max-finder circuit is replaced by singlebit quantizers (slicers) and a combinational logic circuit.…”
Section: The Signal Space Detector (Ssd)mentioning
confidence: 91%
See 2 more Smart Citations
“…A logic output of one corresponds to NRZ , and a logic value of zero for is interpreted as NRZ . Similar structures for were presented in [20] and [21]. In terms of hardware, the max-finder circuit is replaced by singlebit quantizers (slicers) and a combinational logic circuit.…”
Section: The Signal Space Detector (Ssd)mentioning
confidence: 91%
“…In the domain of magnetic recording, a signal space approach with linear boundaries was used in the design of a unique detector for channels using codes [19]. A particular class of signal space detectors exist that mimic the performance of FDTS using linear boundaries [20]. This approach that was taken to develop detectors for RLL channels [10]- [12], [21] as well as enhanced DFE [22].…”
Section: The Signal Space Detector (Ssd)mentioning
confidence: 99%
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“…The proposed approach is to remove data patterns allowing this type of error pattern through coding. The potential improvement in the FDTS detection performance using this approach can be estimated by computing the increase in the minimum distance between two diverging lookahead tree paths after removing the paths that allow the +(2 -2 2) error events [3]. A simple minimum distance analysis for PRML systems reveals that this is also a critical error pattern in high order PRML systems such as Manuscript received March 4, 1996.…”
Section: Coding Methodsmentioning
confidence: 99%
“…The space is then divided into regions corresponding to the possible outputs. This concept has been applied to magnetic recording in the development of twodimensional detectors that approach or match the performance of FDTS/DF with depth -=1 3] and also in a reduced complexity MLSD detector [4]. This paper describes a design procedure for higher dimensional detectors, which is illustrated for the three-dimensional case.…”
Section: Introductionmentioning
confidence: 99%