A Novel Frequency Domain Turbo-Equalizer for STBICM over MIMO ISI Channel

This paper presents a novel frequency domain block turbo-equalizer for single-carrier transmission over MIMO broadband wireless channel. This turbo-equalizer treats intersymbol interference and multi-antenna interference separately, enabling to choose different criteria for their resolution. This functional split introduces an additional degree of freedom to adapt the turbo-equalizer structure to specific transmission scenarios. As an example, a point-to-point MIMO scenario where a single-user employs a space-time bit-interleaved coded modulation is considered. Simulations show that the proposed turbo-equalizer is sometimes able to outperform the conventional approach inspired by Wang and Poor´s seminal paper (on multiuser turbo-detection for CDMA) at the price of an additional but manageable complexity.