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ITIIS
2008
80views more  ITIIS 2008»
13 years 6 months ago
A Composite LMMSE Channel Estimator for Spectrum-Efficient OFDM Transmit Diversity
In this paper, we propose a subcarrier allocation method and a composite linear minimum mean square error (LMMSE) channel estimator to increase spectrum efficiency in orthogonal f...
Jeong-Wook Seo, Won-Gi Jeon, Jong-Ho Paik, Minho J...
TWC
2010
13 years 29 days 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
ICC
2009
IEEE
117views Communications» more  ICC 2009»
14 years 1 months ago
Reduced-Rank Adaptive Least Bit Error-Rate Detection in Hybrid Direct-Sequence Time-Hopping Ultrawide Bandwidth Systems
— In this paper we consider the low-complexity detection in hybrid direct-sequence time-hopping ultrawide bandwidth (DS-TH UWB) systems. A reduced-rank adaptive LBER detector is ...
Qasim Zeeshan Ahmed, Lie-Liang Yang, Sheng Chen
CORR
2007
Springer
75views Education» more  CORR 2007»
13 years 6 months ago
Wavelet Based Semi-blind Channel Estimation For Multiband OFDM
— This paper introduces an expectation-maximization (EM) algorithm within a wavelet domain Bayesian framework for semi-blind channel estimation of multiband OFDM based UWB commun...
Sajad Sadough, Mahieddine Ichir, Emmanuel Jaffrot,...
TWC
2008
150views more  TWC 2008»
13 years 6 months ago
Design and analysis of post-coded OFDM systems
This paper discusses the design and analysis of post coded OFDM (PC-OFDM) systems. Coded or precoded OFDM systems are generally employed to overcome the symbol recovery problem in...
S. F. A. Shah, Ahmed H. Tewfik