Results 141 to 150 of about 738 (173)

A semi-blind approach to structured channel equalization

Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181), 2002
This paper describes a direct equalization approach for channels with some underlying structure. A semi-blind approach is taken here where a small amount of training symbols is available. A family of MMSE equalizers is obtained that includes some prior information about the channel structure.
Boon Chong Ng, David Gesbert, Arogyaswami Paulraj   +2 more
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An adaptive algorithm for blind MMSE equalization of SIMO channels

Journal of Ambient Intelligence and Humanized Computing, 2013
In this work, an adaptive method for estimating blind MMSE equalizer with arbitrary delay of SIMO channel is proposed. By using an RLS-similar algorithm to recursively update correlation matrix and its pseudo inverse, the proposed algorithm ensures convergence and is not sensitive to initialization.
Caiyun Chen, Junshan Yu
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Multiuser blind channel estimation and spatial channel pre-equalization

1995 International Conference on Acoustics, Speech, and Signal Processing, 2002
In this paper, we study two of the fundamental operations of a TDD smart antenna system, namely, the uplink channel and sequence identification and downlink selective transmission. For uplink, our focus is on the development of a blind estimation algorithm which is capable of resolving a multiuser system without the use of training sequence or any ...
Hui Liu 0011, Guanghan Xu
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Projection minimization algorithm for blind channel equalizer

Signal Processing, 2003
This paper presents a new direct blind channel equalizer by using spatial adaptive filtering technique. Two correlation matrices with time delay parameters d and d + 1 are incorporated into design to guarantee the extraction of a d-delay signal. To reduce the system computation complexity of the algorithm, a projection minimization criterion is ...
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Channel estimation standard and adaptive blind equalization

IEEE Transactions on Communications, 1995
A novel concept of channel estimation standard (CES) is introduced. The convexity property of the CES cost function is shown. The application of CES to the process of adaptive blind equalization is illustrated, where a new CES error criterion is then proposed.
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Blind channel equalization using chirp modulating signals

2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100), 2002
This paper addresses the problem of blind channel equalization in the context of digital communications. Recent results have shown that certain operations applied to the source signal at the transmitter help in the blind identification and equalization of the channel at the receiver.
Aldo G. Orozco-Lugo, Desmond C. McLernon
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A 'quantized' channel approach to blind equalization

[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications, 2003
A blind identification algorithm for unknown linear channels is proposed. The algorithm operates over a grid in the channel space that is made finer by using the maximum likelihood criterion to confine the estimated channel in the neighborhood of the original unknown channel.
E. Zervas, J. Proakis, V. Eyuboglu
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Blind channel estimation and adaptive blind equalizer initialization

ICC 91 International Conference on Communications Conference Record, 2002
The authors propose approaches to the problem of adaptive blind equalizer initialization and channel impulse response estimation for data communication systems, including telephone channels as well as digital radio channels. They propose two schemes for channel impulse response estimation that can be used for reliable initialization of the conventional
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MFCM for Nonlinear Blind Channel Equalization

2007
In this study, we present a modified Fuzzy C-Means (MFCM) algorithm for nonlinear blind channel equalization. The proposed MFCM searches the optimal channel output states of a nonlinear channel, based on the Bayesian likelihood fitness function instead of a conventional Euclidean distance measure. In its searching procedure, all of the possible desired
Soowhan Han, Sungdae Park, Witold Pedrycz   +2 more
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Admissibility in blind adaptive channel equalization

IEEE Control Systems, 1991
A tutorial survey is presented of an open problem, namely, the admissibility of the memory-less-error-function class of blind adaptive channel equalizers. The problem is treated in a manner that stresses control engineering, rather than communications engineering, terminology. A simple, simulated experiment is set up and referred to throughout.
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