An iterative receiver based on EQ-GM algorithm for SFBC-OFDM systems

This paper proposes an iterative EQ-GM algorithm for SFBC-OFDM systems based on GM channel estimation algorithm and ZF principle. The scheme deduces a frequency domain ZF equalizer for the 2 × 2 SFBC-OFDM system to eliminate the channel coefficient differences of the adjacent subcarriers introduced by the frequency selective channel in order to maintain the orthogonality of the SFBC codes at the receiver. At the same time, by embedding the equalizer to the GM algorithm, this scheme can improves the convergence ability and system performance effectively.