However, to the authors knowledge, the implementation of this idea in the context of MIMO MC-CDMA communications has never been addressed. In this study, our aim is also to develop strategies to alleviate the inherent complexity of the underlying minimization problem.

The rest of the article is structured as follows: Section MC-CDMA with SFBC defines basic concepts related to SFBC MC-CDMA. Section PAPR reduction via UR describes the UR technique. Section Dimension reduction is devoted to explore the possibility of reducing the complexity of the optimization problem-However, to the authors　knowledge, the implementation of this idea in the context of MIMO MC-CDMA communications has never been addressed. In this study, our aim is also to develop strategies to alleviate the inherent complexity of the underlying minimization problem.

The rest of the article is structured as follows: Section　MC-CDMA with SFBC　defines basic concepts related to SFBC MC-CDMA. Section　PAPR reduction via UR　describes the UR technique. Section　Dimension reduction　is devoted to explore the possibility of reducing the complexity of the optimization problem