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VTC
2006
IEEE
101views Communications» more  VTC 2006»
14 years 1 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
HOTNETS
2010
13 years 2 months ago
Listen (on the frequency domain) before you talk
Conventional WiFi networks perform channel contention in time domain. This is known to be wasteful because the channel is forced to remain idle, while all contending nodes are bac...
Souvik Sen, Romit Roy Choudhury, Srihari Nelakudit...
VTC
2010
IEEE
146views Communications» more  VTC 2010»
13 years 6 months ago
Multi-User Channel Estimation for Interference Mitigation in the LTE-Advanced Uplink
—We discuss a novel pilot design for multi-user channel estimation in the OFDM uplink with localized block-type pilot placement. Due to this placement, multiple users’ channels...
Zhijun Rong, Gerhard Fettweis
VTC
2008
IEEE
142views Communications» more  VTC 2008»
14 years 2 months ago
EXIT-Chart Aided Hybrid Multiuser Detector Design for Frequency-Domain-Spread Chip-Interleaved MC-CDMA
— With the advent of EXtrinsic Information Transfer (EXIT) charts, we are capable of analyzing, predicting and visually comparing the convergence behaviours of different turbo Mu...
Lei Xu, Rong Zhang, Sheng Chen, Lajos Hanzo
VTC
2006
IEEE
125views Communications» more  VTC 2006»
14 years 1 months ago
A Carrier Interferometry based Channel Estimation Technique for One-Cell Reuse MIMO-OFDM/TDMA Cellular Systems
Abstract— This paper propose a channel estimation technique for multiple-input multiple-output (MIMO) - orthogonal frequency division multiplexing (OFDM) / time division multiple...
Kazunari Yokomakura, Seiichi Sampei, Hiroshi Harad...