This book offers a cutting-edge look at multiple-input multiple-output (MIMO) signal processing, namely its detection and precoding. It examines its combination with OFDM, UWB, and CDMA, along with the impact of these combinations at the system level. Massive MIMO and network coding at the physical layer are very recent topics which are also addressed. The book presents the work of contributing authors from first-class institutions who are highly cited in the MIMO field. These experts examine ongoing R&D activities in the field of MIMO systems and its associated signal processing that is expected to be employed in 4G and 5G systems.