Title :
Precoded closed-loop MIMO-OFDM system using predefined set of rotation matrices
Author_Institution :
Mid Sweden Univ., Sundsvall, Sweden
fDate :
3/3/2005 12:00:00 AM
Abstract :
Multiple-input multiple-output (MIMO) wireless systems obtain large diversity and capacity gains by employing multiple antennas at both the transmitter and receiver side. Proposed is a simple precoded closed-loop MIMO-OFDM system that improves the bit error performance. The proposed scheme only needs a feedback of two bits per OFDM tone for the entire duration of a frame.
Keywords :
MIMO systems; OFDM modulation; closed loop systems; diversity reception; encoding; error statistics; feedback; matrix algebra; receiving antennas; transmitting antennas; bit error performance; capacity gain; diversity gain; feedback; multiple receive antennas; multiple transmit antennas; multiple-input multiple-output wireless systems; precoded closed-loop MIMO-OFDM; rotation matrices;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20047601
