Mimo Receiver Outline

MIMO Receiver Outline ➢ Assumptions: 1) Uncoded 2) Narrowband – Flat Fading  Capacity ○ Shannon Limit Capacity vs. Multiple Antenna Configuration  MIMO > SIMO > MISO > SISO ○ OSUC-Shannon Limit Capacity – VBLAST vs. DBLAST  Based on percentage of TX antennas contributing to • Low SNR – VBLAST ~ DBLAST • High SNR – VBLAST > DBLAST  Receivers ○ Linear  ML and MAP  Weighted • ZF ○ H ^ -1  Psuedo Inverse – Moore Penrose (Matlab)  Signal precoding – single RX - Hassibi • MMSE ○ T-MMSE • Joint-Channel Diagonalization – ZF and eliminate CCI ○ Non-Linear  SUC – Successive Cancellation  OSUC – Ordered Successive Cancellation • VBLAST  Performance – BER  ML /MAP > OSUC > SUC ~ MMSE ~ ZF