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GLOBECOM
2009
IEEE
13 years 7 months ago
Constellation Precoded Beamforming
Abstract--We present and analyze the performance of constellation precoded beamforming. This multi-input multi-output transmission technique is based on the singular value decompos...
Hong Ju Park, Ender Ayanoglu
TWC
2008
150views more  TWC 2008»
13 years 9 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
CORR
2008
Springer
129views Education» more  CORR 2008»
13 years 9 months ago
Combining Beamforming and Space-Time Coding Using Noisy Quantized Feedback
The goal of combining beamforming and space-time coding is to obtain full-diversity order and to provide additional received power (array gain) compared to conventional space-time...
Siavash Ekbatani, Hamid Jafarkhani
VTC
2008
IEEE
102views Communications» more  VTC 2008»
14 years 3 months ago
A New Two-Step Precoding Based on Rotation Transformations in Closed-Loop MIMO Systems
— In this paper, we propose a two-step precoding approach for multiple-input multiple-output (MIMO) systems by dividing the precoding process into two steps: spatial multiplexing...
Heunchul Lee, Seokhwan Park, Inkyu Lee
GLOBECOM
2009
IEEE
14 years 4 months ago
Channel Orthogonalizing Precoder for Open-Loop QO-STBC Systems
—This paper proposes a new preprocessing scheme for rate-one quasi-orthogonal space-time block code (QO-STBC), which requires no channel state information at the transmitter. We ...
Heejin Kim, Heunchul Lee, Inkyu Lee