Sciweavers

115 search results - page 7 / 23
» A maximum entropy approach to OFDM channel estimation
Sort
View
ICC
2007
IEEE
160views Communications» more  ICC 2007»
14 years 2 months ago
Robust Statistics Based Expectation-Maximization Algorithm for Channel Tracking in OFDM Systems
— Decision directed channel tracking (DDCT) at high fade rates in OFDM based systems is addressed in this paper. Existing DDCT algorithms like the expectation-maximization (EM) a...
Sheetal Kalyani, Krishnamurthy Giridhar
TWC
2010
13 years 2 months ago
Reduced-Complexity Joint Baseband Compensation of Phase Noise and I/Q Imbalance for MIMO-OFDM Systems
The maximum likelihood estimate of the impulse response of a frequency-selective channel in the presence of phase noise and I/Q imbalance is derived. The complexity of the joint es...
Rabie Rabiei, Won Namgoong, Naofal Al-Dhahir
VTC
2006
IEEE
164views Communications» more  VTC 2006»
14 years 1 months ago
Iterative Joint Channel Estimation and Symbol Detection for Multi-User MIMO OFDM
Abstract – Multiple-Input-Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems have recently attracted substantial research interest. However, compare...
Ming Jiang 0002, Jos Akhtman, Feng Guo, Lajos Hanz...
ISCAS
2003
IEEE
120views Hardware» more  ISCAS 2003»
14 years 1 months ago
Combining adaptive smoothing and decision-directed channel estimation schemes for OFDM WLAN systems
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,...
Hsuan-Yu Liu, Yi-Hsin Yu, Chien-Jen Hung, Temg-Yin...
TSP
2008
178views more  TSP 2008»
13 years 7 months ago
Monte Carlo Methods for Channel, Phase Noise, and Frequency Offset Estimation With Unknown Noise Variances in OFDM Systems
In this paper, we address the problem of orthogonal frequency-division multiplexing (OFDM) channel estimation in the presence of phase noise (PHN) and carrier frequency offset (CFO...
F. Septier, Yves Delignon, A. Menhaj-Rivenq, Chris...