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A time-varying structure and a time-invariant structure for the finite-length minimum-mean-square-error decision feedback equalizer (MMSE-DFE) are presented and their performances are compared on a stationary channel impaired by intersymbol interference (ISI) and additive Gaussian noise. The time-varying structure has an innovations error sequence but incurs a throughput loss on ISI channels because of its block-processing nature. Conditions under which the time-invariant structure exhibits near-optimal performance are described. Both structures converge to the canonical MMSE-DFE of Cioffi et al. (see ibid., vol.43, p.2582-94, 1995 and vol.43, p.2595-2604, 1995) as their filters' lengths become infinite
Published in:
Communications, IEEE Transactions on
(Volume:46
,
Issue:
1
)
Date of Publication: Jan 1998
- Page(s):
- 11 - 15
- ISSN :
- 0090-6778
- INSPEC Accession Number:
- 5825592
- Digital Object Identifier :
- 10.1109/26.655396
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Jan 1998
- Sponsored by :
- IEEE Communications Society
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