Multilayered space-time block codes for OFDM systems

In this paper, we propose a combination of the vertical layered Space-Time architecture (V-BLAST) and the Space-Time Block Codes (STBC) producing VBLAST-STBC, which shows a performance advantage over V-BLAST in frat fading channels. We also propose VBLAST-STBC with Orthogonal Frequency Division Multiplexing (OFDM) producing VBLAST-STBCOFDM, which shows a pevformance advantage over VBLAST-OFDM in frequency selective fading channels. These two schemes provide reliable as well as very high data rate communications over Rayleigh fading channels. The simulations show the advantages of the proposed schemes over the original V-BLAST and VBLAST-OFDM schemes.