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A cellular base station with 128 antennas may soon help some mobile operators serve many more subscribers in crowded areas.
Nokia demonstrated the technology, called massive MIMO (multiple in, multiple out) with Sprint at Mobile World Congress on Monday. It’s one of several types of advances in LTE that could eventually come into play with 5G, too.
Massive MIMO uses a large number of small antennas to create dedicated connections to multiple devices at once. In this case, the base station has 64x64 MIMO, or 64 antennas each for upstream and downstream signals. In Nokia and Sprint’s tests, it increased the capacity of a cell by as much as eight times for downloads and as much as five times for uploads.
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