Tom Keathley of AT&T approves. No one believed Arogyaswami Paulraj in the 1990's when he claimed MIMO (his invention) would one day lead to a 100x improvement in wireless capacity. That day is now close, with Ericsson making the first announcement of commercial Massive MIMO.
"We must have MU-MIMO," Sanyogita Shamsunder of Verizon said this spring. "Massive-MIMO, also known as 3D MIMO, is an important milestone in China Mobile's technology roadmap," Huang Yuhong of China Mobile says in the pr below. Keathley adds a comment from AT&T.
Many of us have seen how well four antennas work in 4x4 Wi-Fi, raising theoretical speeds over a gigabit and real world tests at 500 megabits. Four antenna MIMO is a crucial enabler of gigabit LTE, about to start deploying. Add more antennas and performance continues to improve. See 1000% MU MIMO gain in gigabit tests by Universities, Facebook.