Experimental Performance of Frequency-Domain MIMO Receiver Using 25.9 GHz Terminal Collaboration

The terminal-collaborated multiple-input multipleoutput (MIMO) reception technology can equivalently increase the number of receiving antennas by collaborating the receiving terminals. Using this technology, the spectrum efficiency of communication between the base station and the collaborating terminals can be increased. It is desirable to use high-frequency bands with high-speed and low-latency for collaborative communication. In this paper, we report the initial implementation results of a transmission experiment system for MIMO reception with terminal collaboration that uses the 25.9 GHz band for terminal-to-terminal communication, with the goal of future outdoor experiments. As a result, we show that the error rate performance is improved as the number of collaborating terminals is increased.