On interference cancellation in Alamouti coding scheme for filter bank based multicarrier systems

In this paper we consider the application issue of the Alamouti coding scheme in filter bank based multicarrier (FBMC) systems. The presence of the inherent interference prevents the use of Alamouti coding scheme with FBMC modulation. Receiver schemes with interference cancellation are not always effective due to the error propagation. In this work, we propose some arrangements in the space-time and frequency block coding (STBC, SFBC) in order to reduce the effect of the interference. Then, the Alamouti decoding is followed by an interference canceller. We test the proposed arrangements for the basic 2 x 1 Alamouti coding scheme. The performance is assessed in terms of the bit-error rate (BER) as a function of the signal-to-noise ratio (SNR). We will show that these proposed arrangements allow us to reach almost the optimal performance.