Fengning DU’s research while affiliated with Kyoto University and other places

Distributed detection techniques of multiple-input multiple-output (MIMO) spatially multiplexed signals are studied in this paper. This system considered employs multiple mobile stations (MSs) to receive signals from a base station, and then share their received signal waveforms with collaborating MSs. In order to reduce the amount of traffic over the collaborating wireless links, distributed detection techniques are proposed, in which multiple MSs are in charge of detection by making use of both the shared signal waveforms and its own received waveform. Selection combining schemes of detected bit sequences are studied to finalize the decisions. Residual error coefficients in iterative MIMO equalization and detection are utilized in this selection. The error-ratio performance is elucidated not only by computer simulations, but also by offline processing using experimental signals recorded in a measurement campaign.

Collaborated multiple input multiple output (MIMO) reception is studied in this letter. This system employs multiple mobile stations (MSs) to receive the signals from the base station (BS), and then share their received signals among collaborated MSs. One of important research topic for this system is MS selection for collaboration. This letter presents the relation between the error rate performance of this system and antenna arrangements of the MS side in actual environments. The results suggest that MSs in collaboration can remain the same in terms of long-term average performance.