Results 141 to 150 of about 247 (176)

Elimination of DC Offset by MMSE Adaptive Equalizers

IEEE Transactions on Communications, 1976
Data communication systems are often beset with the problem of dc offset. The questions addressed and answered in this concise paper are: 1) can minimum mean-squared error (MMSE) equalizers correct dc offset? 2) what are the exact effects of the equalizer on offset, and offset on residual MSE?
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MMSE decision-feedback equalizers: finite-length results

IEEE Transactions on Information Theory, 1995
Summary: This paper extends a number of results on the infinite-length minimum- mean-square-error decision feedback equalizer (MMSE-DFE) reported in [\textit{J. Cioffi}, \textit{G. Dudevoir}, \textit{M. Eyuboglu} and \textit{G. D. Forney} jun., ``Minimum mean-square-error decision feedback equalization and coding. I and II.'' IEEE Trans. Commun.
Naofal Al-Dhahir, John M. Cioffi
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MMSE Equalization of Interference on Fading Diversity Channels

IEEE Transactions on Communications, 1984
Adaptive equalization is used in digital transmission systems with parallel fading channels. The equalization combines the diversity channels and reduces intersymbol interference due to multipath returns. When interference is present and correlated from channel to channel, the equalizer can also reduce its effect on the quality of information transfer,
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MMSE non uniformly spaced equalizers

Conference Record of the Thirty-Eighth Asilomar Conference on Signals, Systems and Computers, 2004., 2005
Non uniformly spaced equalizers (NUSE) were recently proposed as an alternative to fractional spaced equalizers (FSE) and baud spaced equalizers (BSE). A key result pertaining to this new class of equalizers is that, under certain channel conditions, NUSE FIR zero forcing solutions operating at the lower BSE rate exist.
J. Tuqan, null Yan Huang
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A Modified DFE-MMSE Equalization Algorithm

Advanced Materials Research, 2014
In wireless communication, inter symbol interference (ISI) and signal distortion are often caused by the frequency deviation and time offset of wireless channel. To eliminate or reduce ISI, people proposed the channel equalization technology. However, traditional decision feedback equalization algorithm based on MMSE criterion equalizer (DFE-MMSE ...
Yu Xia, Fang Ye, Yi Bing Li, Ling Wang
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On MMSE fractionally-spaced equalizer design

Proceedings of 13th International Conference on Digital Signal Processing, 2002
This paper adds analytical tools to an evolving theory on fractionally-spaced equalizer (FSE) design. It examines the minimum mean square error design (MMSE-FSE) for channels perturbed by additive noise in two scenarios: when the equalizer is finite, but is at least as long as the channel, and when the equalizer has an infinite impulse response (IIR ...
R.A. Casas, F. Lopez de Victoria, I. Fijalkow, P. Schniter, T.J. Endrea   +4 more
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Linear MMSE Frequency Domain Equalization with Colored Noise

2007 IEEE 66th Vehicular Technology Conference, 2007
The use of oversampling at the receiver results in colored noise when the bandwidth of the noise-limiting filter is not sufficiently large. This paper proposes a fractionally-spaced single-carrier linear MMSE frequency domain equalizer (LMMSE-FDE) over frequency-selective multiple input multiple output (MIMO) channels.
Baojin Li 0001, Qixing Wang, Guoquan Lu, Yongyu Chang, Dacheng Yang   +4 more
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Mismatched finite-complexity MMSE decision feedback equalizers

IEEE Transactions on Signal Processing, 1997
Closed-form expressions that quantify the degradation in the decision-point signal-to-noise ratio of the finite-length minimum mean-square-error decision feedback equalizer (MMSE-DFE) due to channel and noise mismatch conditions are derived. The analysis is further extended to other receiver structures, namely, the MMSE-DFE with an adaptive feedforward
Naofal Al-Dhahir, John M. Cioffi
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A new blind adaptive MMSE equalizer for MIMO systems

2005 IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006
In this paper, we consider the problem of blind equalization of MIMO systems. In a recent work a blind MMSE equalizer robust to channel order over-estimation errors was proposed for SIMO systems. In this work, we extend this method and propose a new MMSE algorithm that presents better robustness and better tracking performances.
Ibrahim Kacha, Karim Abed-Meraim, Adel Belouchrani   +2 more
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A matched filter approximation for SC/MMSE iterative equalizers

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2001
This letter proposes a new iterative ISI equalization algorithm that offers low computational complexity: order L/sup 2/ with channel memory length L. The proposed algorithm is an extension of Reynolds and Wang's SC/MMSE (soft canceler followed by MMSE filter) equalizer: approximations are used properly to reduce the computational complexity.
Hiroo Omori, Takahiro Asai, Tadashi Matsumoto 0001   +2 more
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