Iterative cyclic prefix reconstruction and channel estimation for space-time block coded frequency division multiplexing

In order to prevent a loss of spectral efficiency due to the use of cyclic prefix (CP), a CP reconstruction (CPR) method, such as residual intersymbol interference cancellation (RISIC), has recently been developed. In this paper, we apply the RISIC method to Alamouli space-time block coded (STBC) orthogonal frequency division multiplexing (OFDM) system with insufficient CP. It is shown that in the STBC OFDM, tail cancellation as well as cyclic restoration of the RISIC should be repeated. An iterative channel estimation method for the STBC OFDM system with CPR is proposed. The performance of the proposed method is evaluated by computer simulation in multipath fading environment.