Performance Comparison of Adaptive Terminal Selection Schemes for Terminal-Collaborated MIMO Reception Using Actual Received Signals

In terminal-collaborated multiple-input multiple-output (MIMO) reception, a base station transmits multiple signal streams to a virtual terminal with a large number of reception antennas. The virtual terminal consists of multiple mobile terminals sharing their signals with other terminals. As the number of terminals increases, the performance of terminal-collaborated MIMO reception improves. However, the overhead for inter-terminal communication also increases. If the optimum set of collaborated terminals is selected, it is possible to improve the performance of terminal-collaborated MIMO reception and reduce the aforementioned overhead. In this study, adaptive terminal selection schemes were examined using actual received signals previously stored during outdoor experiments.