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TSP
2012
14 years 18 days ago
Randomized Isometric Linear-Dispersion Space-Time Block Coding for the DF Relay Channel
This article presents a randomized linear-dispersion space-time block code for decode-andforward synchronous relays. The coding matrices are obtained as a set of columns (or rows)...
David Gregoratti, Walid Hachem, Xavier Mestre
107
Voted
GLOBECOM
2007
IEEE
15 years 11 months ago
Overlapped Alamouti Codes
—In most of the existing space–time code designs, achieving full diversity is based on maximum-likelihood (ML) decoding at the receiver that is usually computationally expensiv...
Yue Shang, Xiang-Gen Xia
153
Voted
ICC
2007
IEEE
120views Communications» more  ICC 2007»
15 years 11 months ago
Multiuser MIMO Downlink Transmission Over Time-Varying Channels
—— The performance of multiuser MIMO downlink systems with block diagonalization (BD) relies on the channel state information (CSI) at the transmitter to a great extent. For ti...
Kai Zhang, Zhisheng Niu
ICASSP
2008
IEEE
15 years 11 months ago
A factor graph approach to joint iterative data detection and channel estimation in pilot-assisted IDMA transmissions
We consider a pilot-assisted interleave-division multiple access (IDMA) system transmitting over block-fading channels. We describe this system in terms of a factor graph and use ...
Clemens Novak, Gerald Matz, Franz Hlawatsch
138
Voted
PET
2007
Springer
15 years 11 months ago
Two-Sided Statistical Disclosure Attack
We introduce a new traffic analysis attack: the Two-sided Statistical Disclosure Attack, that tries to uncover the receivers of messages sent through an anonymizing network support...
George Danezis, Claudia Díaz, Carmela Tronc...