Title: A New Combination of Message Passing Techniques for Receiver Design in MIMO-OFDM Systems,
Abstract: In this paper, we propose a new combined message passing algorithm which
allows belief propagation (BP) and mean filed (MF) applied on a same factor
node, so that MF can be applied to hard constraint factors. Based on the
proposed message passing algorithm, a iterative receiver is designed for
MIMO-OFDM systems. Both BP and MF are exploited to deal with the hard
constraint factor nodes involving the multiplication of channel coefficients
and data symbols to reduce the complexity of the only BP used. The numerical
results show that the BER performance of the proposed low complexity receiver
closely approach that of the state-of-the-art receiver, where only BP is used
to handled the hard constraint factors, in the high SNRs.