Bootstrap decoding for the Alamouti space-time scheme with imperfect channel estimation

Imperfect channel estimation results in the introduction of symbols coupling for system with space time codes encoding when decoded by the mismatched filter. The bootstrap algorithm was suggested to be used as a signal separator at the output of the mismatched filter. In this work, this solution is studied in details for the Alamouti´s code. An inherent problem of the bootstrap´s weights control process causes the algorithm not to converge to the optimal weights, making it inapplicable to this code. Alternatively, a new method of weights calculation is presented and analyzed which enables the use of the bootstrap algorithm.