Performance comparison of layered space time codes

Multiple antenna systems have the potential to provide a high capacity wireless communication system. The spectral efficiency of space time trellis coding (STTC) is limited by the encoder structure. The layered space time (LST) architecture can overcome this problem. Three different LST schemes are presented. An improved iterative parallel interference canceller (PIC) method is applied at the receiver. A significant performance improvement is achieved compared to the standard PIC. Simulation results of three various layer structures are compared with low density parity check (LDPC) and convolutional codes as component codes.