An EM based semi-blind channel estimation algorithm designed for OFDM systems
L Mazet, V Buzenac-Settineri… - … Record of the Thirty …, 2002 - ieeexplore.ieee.org
OFDM systems traditionally perform channel coefficients relying on known training
sequences. However in wireless systems, performance and mobility can be further …
sequences. However in wireless systems, performance and mobility can be further …
Semi-blind channel estimation for OFDM systems via an EM-block algorithm
S Touati, JMM Ocloo, P Duhamel… - 2004 12th European …, 2004 - ieeexplore.ieee.org
In this paper, we propose a semi-blind channel estimation method based on an Expectation-
Maximization Block algorithm (EM-Block). In the OFDM communication context, such an …
Maximization Block algorithm (EM-Block). In the OFDM communication context, such an …
EM-based semi-blind estimation of time-varying channels
L Mazet, V Buzenac-Settineri… - 2003 4th IEEE …, 2003 - ieeexplore.ieee.org
OFDM systems traditionally perform channel coefficients estimation relying on known
training sequences. However in wireless systems, performance and mobility can be further …
training sequences. However in wireless systems, performance and mobility can be further …
OFDM channel estimation by a linear EM-MAP algorithm
JMM Ocloo, F Alberge - 2006 IEEE International Conference on …, 2006 - ieeexplore.ieee.org
OFDM systems traditionally perform channel coefficients estimation relying on known
training sequences. However in wireless systems, performance and mobility can be further …
training sequences. However in wireless systems, performance and mobility can be further …
Maximuma posteriori semi-blind channel estimation for ofdm systems operating on highly frequency and time selective channels
M Siala - Annals of telecommunications, 2002 - ui.adsabs.harvard.edu
We propose a semi-blind block-by-block channel estimation algorithm for ofdm systems
operating in highly frequency and time selective channels. This algorithm, based on the …
operating in highly frequency and time selective channels. This algorithm, based on the …
Semi-blind channel estimation for OFDM systems via an EM-MAP algorithm
JMM Ocloo, F Alberge… - IEEE 6th Workshop on …, 2005 - ieeexplore.ieee.org
In the OFDM communication context, semi-blind algorithms allow to cope with Doppler effect
due to the mobility of wireless systems. For slowly varying channels, the estimation process …
due to the mobility of wireless systems. For slowly varying channels, the estimation process …
Decision-directed channel estimation method for OFDM systems with high velocities
J Ran, R Grunheid, H Rohling… - The 57th IEEE …, 2003 - ieeexplore.ieee.org
The preamble-based channel estimation schemes typically applied in both the HIPERLAN/2
and IEEE 802.11 a systems cannot fulfill the requirements in scenarios with high velocities …
and IEEE 802.11 a systems cannot fulfill the requirements in scenarios with high velocities …
Efficient OFDM channel estimation in mobile environments based on irregular sampling
We present a novel pilot-aided channel estimation method for OFDM packet transmissions
over time-varying channels. The proposed channel estimator is based on 2-D irregular …
over time-varying channels. The proposed channel estimator is based on 2-D irregular …
Combining adaptive smoothing and decision-directed channel estimation schemes for OFDM WLAN systems
HY Liu, YH Yu, CJ Hung, TY Hsu… - 2003 IEEE International …, 2003 - ieeexplore.ieee.org
In this paper, a new channel estimation method for OFDM WLAN systems is proposed. This
proposal mainly consists of smoothing filtering and decision-directed tracking loop schemes …
proposal mainly consists of smoothing filtering and decision-directed tracking loop schemes …
Semi-blind channel estimation using superimposed training sequences with constant magnitude in dual domain for OFDM systems
CP Li, WC Huang - 2006 IEEE 63rd Vehicular Technology …, 2006 - ieeexplore.ieee.org
A superimposed training scheme is proposed for channel estimation in OFDM systems. The
generalized chirp-like (GCL) sequence is adopted since it has a constant magnitude in both …
generalized chirp-like (GCL) sequence is adopted since it has a constant magnitude in both …