ABSTRACT
This chapter introduces the advanced spatial multiplexing (SM) detection scheme over conventional detection schemes. It describes the trend on multiple-input multiple-output (MIMO) systems in recent standards. MIMO technologies have been adopted rapidly in wireless communications since they can significantly increase data throughput or reliability without paying the cost of additional bandwidth or additional power at the transmitter. The chapter provides a maximum likelihood (ML) detection algorithm named dimension reduction soft detector (DRSD) that achieves the near-ML performance with a significantly lower complexity than existing receivers. The optimality of the proposed DRSD can be maintained by the use of the optimal hard detector. The chapter discusses an iterative detection and decoding (IDD) scheme, which recently has attracted more attention due to higher performance at the cost of additional complexity. IDD scheme exploits the feedback path from the decoder to the detector.
