Due to the limitations of coherence time in TDD massive MIMO, pilot contamination becomes a major problem. How can i solve it?
In the introduction of our paper "Massive MIMO has Unlimited Capacity" (https://arxiv.org/pdf/1705.00538) you can find a description of different approaches to mitigate pilot contamination.
Pilot contamination is indeed an issue in massive MIMO, but I am not sure if I would call it a major issue.
By increasing the order of massive MIMO system.
As the number of antennas increases, signals energy (including the pilot signal) focused more and more and interference goes to its lowest. more specifically, this advantage holds for low-to-moderate frequency ranges at which the 'asymptotic orthogonality' between channel vectors holds.
In the introduction of our paper "Massive MIMO has Unlimited Capacity" (https://arxiv.org/pdf/1705.00538) you can find a description of different approaches to mitigate pilot contamination.
Pilot contamination is indeed an issue in massive MIMO, but I am not sure if I would call it a major issue.
Yasser F. Al-Eryani and Emil Björnson
thanks for the reply ... really helpful
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