Results 141 to 150 of about 1,497 (190)
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Convexity in SISO blind equalization
2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002A new class of blind equalization cost functions have been proposed (see. Shtrom, V. and Fan, H., IEEE Trans. on SP., vol.46, no.10, p.2674-83, 1998). They have the particularity of being unimodal, and some of them are sectionally convex in the combined system domain (CDS).
Mónica Corlay +2 more
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An enhancement to blind equalization algorithms
IEEE Transactions on Communications, 1991Blind equalization performance can be improved by controlling the equalizer adaption step-size according to the region in which the received signal lies in the constellation plane. A simple technique based on this principle is proposed as a modification to blind equalization algorithms, and its effectiveness is demonstrated by simulation. As an example,
J. A. Fergus Ross, Desmond P. Taylor
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A geometrical view of blind equalization
IEEE International Conference on Acoustics Speech and Signal Processing, 1993A geometrical analysis of the equalization problem is presented. The input signal forms an (m+L)-dimensional hypercube that is mapped via a convolution matrix to an m-D parallelotope, where L is the order of the channel and m is the order of the transversal equalizer. The properties of this mapping are discussed, and a criterion for equalization called
Z. Gu, William A. Sethares
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IEEE Signal Processing Letters, 1997
It is well known that an adaptive filter with a large step size in the transient period and a small one in the convergence period gives small mean squared steady state error while achieving a fast convergence rate. Based upon this idea, we present two variable step size (VSS) blind equalizers.
Fang-Biau Ueng, Yu T. Su
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It is well known that an adaptive filter with a large step size in the transient period and a small one in the convergence period gives small mean squared steady state error while achieving a fast convergence rate. Based upon this idea, we present two variable step size (VSS) blind equalizers.
Fang-Biau Ueng, Yu T. Su
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Convex Combination of SISO Equalization and Blind Source Separation for MIMO Blind Equalization
Wireless Personal Communications, 2019For Multiple-Input Multiple-Output (MIMO) system the received signal will suffer not only inter-symbol interference but also inter-antenna interference under frequency selective fading channel. This paper proposes a MIMO blind equalization algorithm consisting of the convex combination of Single-Input Single-Output (SISO) blind equalization algorithm ...
Yongjun Sun +3 more
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Convergence analysis of the CMA blind equalizer
IEEE Transactions on Communications, 1995The convergence behaviour of the constant modulus algorithm (CMA) is analytically evaluated in terms of the mean and the variance of the equalized sequence conditioned on the transmitted symbol, thus characterizing the dispersion pattern of the equalized samples around the QAM constellation points.
CUSANI, Roberto, A. Laurenti
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Blind Hammerstein decision feedback equalizer (BHDFE) as a new blind equalizer
Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513), 2004Intersymbol interference (ISI) of the radio propagation through multipath fading channels is a major factor that limits the performance of mobile communication systems. Blind decision feedback equalization (DFE) is one of major methods for channel equalization. We propose a new method, based on a Hammerstein filter instead of DFE filters, for enhancing
Y. Miar +3 more
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Carrier recovery for blind equalization
International Conference on Acoustics, Speech, and Signal Processing, 2003Carrier recovery techniques are presented that work with blind equalization of high-order QAM (quadrature amplitude modulation) signal constellations, specifically, the square uncoded 64-QAM and CCITT V.33 cross-trellis-coded 128-QAM constellations. The techniques were confirmed by laboratory experiments using a WE-DSP32-based real-time digital signal ...
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Comparison of adaptive blind equalizers
[Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1992A new adaptive blind equalizer has been developed and analyzed on the basis of the channel estimation standard (CES). It is also simulated for a QAM transmission system. The results are compared with the performances of other blind equalizers both theoretically and experimentally. >
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Blind equalizers for multipath channels with best equalization delay
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999Previous studies show that equalizers with different equalization delays achieve different performances. The best performed equalizer is not necessarily the one with 0-delay, and often not the case when the channel is non-minimum-phase. In this paper, a blind channel equalization algorithm is presented, by which equalizers with all possible ...
Hui Luo, Ruey-Wen Liu
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