Smart Vertical MIMO Increasing Quality in LTE - Advanced Using Single - size Antenna
نویسندگان
چکیده
Four or more streams of MIMO transmission are needed to achieve data rates in excess of 1 Gbps in LTE-Advanced systems. However, accommodating more antennas for four or more streams of MIMO transmission means that a rise in costs and the difficulty of securing the space for additional antennas must be dealt with. This article describes NTT DOCOMO’s new transmission technology, Smart Vertical MIMO, for LTE-Advanced systems for achieving four streams of MIMO transmission with one antenna and presents the results of evaluating this technology by a field experiment. Radio Access Network Development Department Yuki Inoue Daiki Takeda Keisuke Saito Teruo Kawamura Hidehiro Ando
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