The Promises of Massive MIMO
As mobile networks transition to 5G, massive Multiple Input, Multiple Output (MIMO) antennas will become essential in helping to realize the predicted 100X capacity improvement when compared to today’s Long-Term Evolution-Advanced (LTE-A) and LTE-A Pro technologies. Massive MIMO antennas will be required in the low-, mid-, and high-band spectrums. Massive MIMO antennas are an essential part of the toolbox for 5G, but they are also increasingly important in the LTE-Advanced Pro/Gigabit LTE Radio Access Networks (RANs).
A massive MIMO antenna deploys large numbers of antenna elements inside the antenna enclosure—many more than there are simultaneous active subscribers in the sector. These “excess” antenna elements permit the RAN to narrowly focus the Radio Frequency (RF) energy only toward those subscribers that require it. The effect of this beamforming is to dramatically increase the sector spectral efficiency, allowing the s...
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