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Sectorization based pilot reuse for improving net spectral efficiency in the multicell massive MIMO system
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Sectorization based pilot reuse for improving net spectral efficiency in the multicell massive MIMO system
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Journal Article
Sectorization based pilot reuse for improving net spectral efficiency in the multicell massive MIMO system
2016
Overview
A sectorization method using the uniform circular array（UCA） is proposed to improve the net spectral efficiency（SE） of the multicell massive MIMO system, which is an important index for evaluating the performance of a communication system. We derive the ergodic achievable uplink net SE per cell of a general sectorized system and obtain its deterministic approximation based on the large random matrix theory.Different weight matrices are considered for the sectorized system and the one with the best performance is utilized for further analysis. The consistency of the deterministic approximation with the result of Monte-Carlo simulation is proved at the same time. At last, numerical results indicate that the net SE per cell can be greatly improved compared to the conventional multicell massive MIMO system, which validates the effectiveness of the sectorization method. Moreover, comparisons with other pilot reuse methods are also made in this paper.
Publisher
Science China Press,Springer Nature B.V
