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This paper considers an uplink massive MIMO scheme that employs a pilot reuse scheme. For the massive MIMO scheme, a non-asymptotic cell throughput lower bound that is valid for any M is derived and the bound is shown to be tight by simulations. The lower bound is dependent upon three interference terms: intra-cell interference, inter-cell interference, and interference due to pilot contamination. A set of conditions on which each interference term dominates is examined by analysis and simulations, where the conditions are defined in terms of network topology, pilot reuse number and M.
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