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The introduction of TM9 eliminates restrictions previously imposed by reference signal overhead on LTE multiple-antenna evolution and is a prerequisite for FDD beamforming and coordination features. TM9-based multiple-antenna technology significantly expands cell capacity and improves the experienced data rate and cell edge user experience.
TM9 multiple-antenna technology is a major LTE evolution feature, and similar technologies will be used in future 5G era network. The TM9 industry has quickly matured, and large-scale commercial deployments will occur in 2018.
