Results 221 to 230 of about 1,713 (254)

An Adaptive Channel Estimator for Frequency-Selective Fading Channels

1990
A channel estimator for extracting the discrete-time channel coefficients (“tap-gains”) of a time-varying frequency-selective channel is investigated. A Kalman filter is integrated into a least mean squares (LMS) estimator such that a-priori knowledge about the statistics of the channel is taken into account. Assuming a state-space model of the channel
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Frequency offset estimation in frequency selective fading channels

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion, 2002
The challenge of frequency offset estimation in wireless channels and also the effect of delay spread on the performance of some of the existing algorithms is discussed. A new frequency estimation technique based on channel impulse response estimation which is desirable in wireless systems and has a fast convergence speed is addressed with some new ...
A.R.S. Bahai, M. Sarraf
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Joint Channel Estimation and Decoding for FTNS in Frequency-Selective Fading Channels

2016 IEEE Global Communications Conference (GLOBECOM), 2016
In this paper, we develop a joint channel estimation and decoding method for faster-than-Nyquist signaling (FTNS) transmitting over (quasi-static) time-varying frequency-selective fading channels based on the variational Bayesian (VB) framework. In contrast to existing methods, ours is capable of performing explicit frequency-domain channel estimation ...
Qiaolin Shi, Nan Wu 0002, Hua Wang 0001
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Joint Channel Estimation and Decoding for MIMO Frequency Selective Fading Channels

2008 IEEE Wireless Communications and Networking Conference, 2008
A non-coherent multiple input multiple output (MIMO) coded communication system over frequency selective block fading channel is considered. A theoretical limit for the channel estimation error is established via a closed form derivation of the modified Cramer-Rao bound (MCRB), for the underlying channel model and equi-power signal constellations ...
Sefi Ronen, Tolga M. Duman
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Space-time-frequency trellis coding for frequency-selective fading channels

Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367), 2003
A novel space-time-frequency (STF) trellis coding scheme is developed for multi-antenna OFDM transmissions over frequency-selective Rayleigh fading channels. Incorporating subcarrier grouping and choosing appropriate system parameters, we first convert our system into a set of group STF (GSTF) systems.
Zhiqiang Liu, Yan Xin 0001, Georgios B. Giannakis   +2 more
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Interleaver Structures for Channel Estimation and Decoding on the Frequency Selective Fading Channel

IEEE Transactions on Communications, 2012
This paper examines different designs for combined channel estimation and decoding for a point to point time varying frequency selective fading channel. The channel state information (CSI) is not known a priori at either the transmitter or the receiver. Channel estimation is performed through a combination of conventional pilots and manufactured pilots
Jing Huang, Sundeep Venkatraman, Krishnan Padmanabhan, Oliver M. Collins   +3 more
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The capacity of the frequency/time-selective fading channel

IEEE Information Theory Workshop 2010 (ITW 2010), 2010
We find the capacity of discrete-time channels subject to both frequency-selective and time-selective fading, where the channel output is observed in additive Gaussian noise. A coherent model is assumed where the fading coefficients are known at the receiver.
Tulino A., Caire G., Shamai S., Verdu S.
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An adaptive receiver for frequency selective fading channels

IEEE International Conference on Communications, - Spanning the Universe., 2003
Adaptive reception of binary data over a frequency selective slow Rayleigh fading communication channel, through wideband signaling, using spectral spreading codes is considered. Based on the likelihood ratio test, an estimator correlator receiver structure is developed.
C. Sandeep, S.C. Gupta
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Joint Frequency Offset and Channel Estimation in Frequency Selective MIMO Correlated Fading Channels

VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009
In this paper, we address the problem of frequency offset and channel gains estimation for correlated multi-input multi-output (MIMO) channels. The channel is assumed to be frequency-selective and block fading with both spatial and multipath correlations.
Jiandong Li 0001, Wei Dong, Fusu Wang
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A novel space-frequency coding algorithm suited for frequency-selective fading channels

Second IEEE Consumer Communications and Networking Conference, 2005. CCNC. 2005, 2005
Aiming at a MIMO-OFDM wireless communication system, we propose a simple and effective space-frequency coding algorithm, a time-domain cycle delay algorithm, which implements space-frequency coding using the cycle delay of the OFDM time-domain signal.
Zhi Yu, Weiling Wu
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