Abstract:A turbo equalizer is able to overcome severe inter-symbol-interferences because it benefits from the channel decoding gain by iteratively performing equalization and channel decoding. This paper proposes a scheme of turbo equalization and iterative channel estimation for blind receiver. The scheme exploits a conventional blind equalizer to bootstrap the iterative process and thus is independent of training sequence and a priori information of the transmitted symbols. In such a scheme, the initial blind equalization algorithm is critical and should be able to provide enough information for the following turbo equalization and channel estimation even when channel distortion is severe. Based on analysis of characteristics of turbo equalization, the super exponential algorithm is chosen as the initial blind equalization. Simulation results illustrating performance of the proposed scheme are also given.