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TCOM
2010
84views more  TCOM 2010»
12 years 12 months ago
On using transmission overhead efficiently for channel estimation in OFDM
The limited time available for acquiring the channel state in mobile broadband wireless communication systems makes it crucial to count with channel estimation methods that attain ...
Christian Oberli, María Constanza Estela, M...
VTC
2006
IEEE
101views Communications» more  VTC 2006»
13 years 11 months ago
Estimation of Time-Variant Channels for OFDM Systems Using Kalman and Wiener Filters
In this paper, two channel estimation schemes for OFDM systems are investigated in a time-variant channel. The orthogonality of the subcarriers is destroyed in a time-variant chann...
Hye Mi Park, Jae Hong Lee
GLOBECOM
2009
IEEE
13 years 3 months ago
Power Allocation for Cooperative Diversity Networks with Inaccurate CSI: A Robust and Constrained Kalman Filter Approach
In this paper, a novel Kalman filter-based power allocation scheme is developed for cooperative networks with inaccurate channel state information (CSI). The channel estimation err...
Mohamad Khattar Awad, Veluppillai Mahinthan, Xuemi...
GLOBECOM
2008
IEEE
13 years 6 months ago
Cooperative OFDM Channel Estimation with Frequency Offsets
Abstract— This paper discusses channel estimation in a cooperative orthogonal frequency-division multiplexing (OFDM) network in the presence of frequency offsets. Both the amplif...
Zhongshan Zhang, Wei Zhang, Chintha Tellambura
MOBIQUITOUS
2007
IEEE
13 years 11 months ago
Securing Cooperative Transmission in Wireless Communications
Abstract— Cooperative transmission is an emerging communication technique that takes advantages of spatial diversity and broadcast natures of wireless channels to improve wireles...
Zhu Han, Yan Lindsay Sun