Abstract
In multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems, space-time block codes (STBC) and vertical Bell laboratories layered space-time (V-BLAST) are popular techniques to get the diversity gains or multiplexing gains. STBCOFDM system often relies on the assumption of quasistatic channels. For the time-varying multipath channel, performance degrades seriously due to co-channel interference (CCI) and inter-carrier interference (ICI). In this thesis, we propose an iterative interference cancellation architecture to reduce both CCI and ICI jointly. In particular, a list successive interference cancellation (List-SIC) algorithm is presented to obtain a candidate list to compute soft information that is used in the CCI cancellation. Furthermore, an ICI cancellation algorithm that uses prior List-SIC information from the preceding iteration is proposed. On the other hand, V-BLAST OFDM also su er severe ICI in fast fading channels. Therefore, we generalize iterative List-SIC to V-BLAST OFDM. The simulation results show that the proposed scheme achieves near maximum likelihood (ML) error performance with lower complexity for STBC-OFDM and V-BLAST OFDM in fast fading channels