Precoding for multiuser spatial multiplexing MIMO downlink

Precoding for Multiuser MIMO

Future Wireless Networks are expected to adopt multi-user multiple input multiple output (MU-MIMO) systems whose performance is maximized by making use of precoding at the transmitter. This chapter describes the recent advances in precoding design for MU-MIMO and introduces a new technique to improve the precoder performance. Without claiming to be comprehensive, the chapter gives deep introduc...

Multiuser Space-Time Block Coded MIMO System with Downlink Precoding

Space-time block codes (STBC) are powerful techniques to achieve full spatial diversity in Rayleigh fading channels with low decoding complexity. When channel state information is available to the transmitter, space-time block codes can be improved through the use of a transmit precoder chosen based in part on the current channel state. In this paper, we investigate the downlink transmission of...

Precoding Schemes for MIMO Downlink Transmission

Hierarchical Precoding for the Network MIMO Downlink

Over the last few years, network MIMO or distributed MIMO has gained enormous interest in research and meanwhile is a candidate for future communication systems. However, existing techniques handling the multi-user interference, e.g., linear preequalization (LPE) or TomlinsonHarashima precoding (THP), assume full cooperation between the base stations. This might cause significant signaling over...

MIMO Downlink Spatial Multiplexing Algorithms Applied to Channel Measurements

Several algorithms have recently been proposed for multiplexing multiple users in multiple-input, multiple-output (MIMO) downlinks. The ability of a transmitter to accomplish this using spatial methods is generally dependent on whether the users’ channels are linearly independent. Up to this point most of the multiplexing algorithms have been tested on uncorrelated Gaussian channels, a best-cas...