TY - GEN
T1 - A low complexity MMSE detector for multiuser layered space-time coded MIMO systems
AU - Gomaa, May
AU - Ghrayeb, Ali
PY - 2007
Y1 - 2007
N2 - Merging layered space-time (LST) coding, which provides high data rate transmission, with space-time block coding (STBC) provides a tradeoff between transmit diversity and bandwidth efficiency in multiple-input multiple-output (MIMO) systems. This architecture is known as multilayered space time coding (MLSTC). In this paper, we propose a reduced complexity MMSE detector based on the Sorted QR decomposition, intended for MLSTC systems. The proposed decoder has reduced computational complexity in comparison to the group interference cancellation scheme. Our proposed decoder allows for the number of receive antennas to be less than the number of transmit antennas. Since we are dealing with a multiuser system, we wish all users to benefit from the same performance. We therefore use power allocation techniques to amplify users to the highest level of performance available and thus improving the performance.
AB - Merging layered space-time (LST) coding, which provides high data rate transmission, with space-time block coding (STBC) provides a tradeoff between transmit diversity and bandwidth efficiency in multiple-input multiple-output (MIMO) systems. This architecture is known as multilayered space time coding (MLSTC). In this paper, we propose a reduced complexity MMSE detector based on the Sorted QR decomposition, intended for MLSTC systems. The proposed decoder has reduced computational complexity in comparison to the group interference cancellation scheme. Our proposed decoder allows for the number of receive antennas to be less than the number of transmit antennas. Since we are dealing with a multiuser system, we wish all users to benefit from the same performance. We therefore use power allocation techniques to amplify users to the highest level of performance available and thus improving the performance.
UR - http://www.scopus.com/inward/record.url?scp=48749089403&partnerID=8YFLogxK
U2 - 10.1109/CCECE.2007.159
DO - 10.1109/CCECE.2007.159
M3 - Conference contribution
AN - SCOPUS:48749089403
SN - 1424410215
SN - 9781424410217
T3 - Canadian Conference on Electrical and Computer Engineering
SP - 617
EP - 620
BT - 2007 Canadian Conference on Electrical and Computer Engineering, CCECD
T2 - 2007 Canadian Conference on Electrical and Computer Engineering, CCECD
Y2 - 22 April 2007 through 26 April 2007
ER -