Lattice Reduction Aided Detection Techniques for Mimo Systems

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract A Multiple input multiple output (MIMO) technology is seen to provide the best solution to high data rate and reliable wireless communication. For the purpose of detection, Maximum Likelihood receivers are most optimal but highly complex especially with higher order constellation. There are a number of other detectors, linear and non-linear, which are less complex but suboptimal. In this paper we utilize a novel class receivers based on Lattice Reduction for MIMO Systems which achieve near maximum-likelihood detector performance with lower complexity. [1] Lenstra-Lenstra-Lovasz Algorithm [2] is used for lattice reduction purpose. Performance comparisons are made between LRA receivers and other conventional receivers in both independent and correlated channels by simulations. It will be shown that LRA based receivers outperform the conventional ones, especially in correlated channels.