Pilot contamination alleviated coding and decoding for multicell massive MIMO systems

In this paper, we propose a new space-time block coding scheme to mitigate the effect of pilot contamination in multi-cell, massive Multiple-Input Multiple-Output (MIMO) systems. We derive the code design criterion and give some code design examples. Moreover, we present a new decoding method based on an oblique projection, which has a low decoding complexity. Simulation results show that our coding and decoding scheme has better performance than the systems with the Minimum Mean-Square Error (MMSE) decoder.