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TWC
2010
13 years 3 months ago
Managing the interference structure of MIMO HSDPA: a multi-user interference aware MMSE receiver with moderate complexity
It is known that Wideband Code-Division Multiple Access (W-CDMA) networks are limited by interference more than by any other single effect. Due to the frequency selectivity of the ...
Martin Wrulich, Christian Mehlführer, Markus ...
TCOM
2008
89views more  TCOM 2008»
13 years 8 months ago
Construction of block orthogonal golay sequences and application to channel estimation of mimo-ofdm systems
In this paper, we construct a family of block orthogonal Golay sequences that have low peak-to-mean envelope power ratio (PMEPR) as well as blockwise orthogonal properties. We then...
Oh-Soon Shin, H. T. Kung, Vahid Tarokh
VTC
2006
IEEE
14 years 2 months ago
Channel Estimation and Multiuser Detection for MC-DS/CDMA Systems
We propose a joint channel and data estimation scheme which does not require the training data in multicarrier direct-sequence multiple access (MC-DS/CDMA) systems. In order to eli...
Bangwon Seo, Jae Young Ahn, Hyung-Myung Kim
ICASSP
2011
IEEE
13 years 16 days ago
Robust frequency synchronization for an OFDMA uplink system disturbed by a Cognitive Radio system interference
In Cognitive Radio (CR) systems, spectrum sensing plays a key role to determine the free frequency bands. However, when the primaryuser (PU) signal spectrum exhibits localized fad...
Hector Poveda, Guillaume Ferre, Eric Grivel
ICC
2007
IEEE
107views Communications» more  ICC 2007»
14 years 3 months ago
Additional Diversity Gain in OFDM Receivers under the Influence of IQ Imbalances
— In this paper, we analyze the effects of IQ (In-phase/ Quadrature-phase) imbalances at both transmitter and receiver of OFDM (Orthogonal Frequency Division Multiplexing) system...
Younghwan Jin, Jihyun Kwon, Yuro Lee, Jaemin Ahn, ...