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TCOM
2010
71views more  TCOM 2010»
12 years 11 months ago
Unitary space-time constellations based on quasi-orthogonal sequences
In this paper, we propose a novel class of unitary space-time constellations based on quaternary quasi-orthogonal sequences (QOSs), minimizing the maximum correlation between the s...
Jeongchang Kim, Kyungwhoon Cheun, Soongyoon Choi
VTC
2010
IEEE
130views Communications» more  VTC 2010»
13 years 3 months ago
Performance of the Space-Time Block Coded DS-CDMA Uplink Employing Soft-Output ACO-Aided Multiuser Space-Time Detection and Iter
Abstract—In this treatise we propose a three-stage twin-transmitantenna assisted MultiUser (MU) Direct Sequence Code-Division Mulitple Access (DS-CDMA) system employing both a Un...
Chong Xu, Mohammed El-Hajjar, Robert G. Maunder, L...
TWC
2008
150views more  TWC 2008»
13 years 4 months ago
Combining Beamforming and Space-Time Coding Using Quantized Feedback
We combine space-time coding and transmit beamforming over multiple-antenna quasi-static fading channels using resolution-constrained channel state information at the transmitter ...
Siavash Ekbatani, Hamid Jafarkhani