Abstract:

       For the case of imperfect channel estimation, variance of equivalent noise is found with the imperfect channel state information. A modified iterative scheme of parallel interference cancellation is then proposed using the Turbo-BLAST scheme. The scheme is suited to the Turbo-BLAST system with perfect or imperfect channel state information. Simulation results show that the proposed scheme is effective in improving BER performance.

Key words: Turbo-BLAST ,  imperfect channel state information , channel estimation error , parallel interference , cancellation iterative detection