Open AccessSeparate analysis of cell‐edge and cell‐centre user performance for irregular massive MIMO network with interference cancellation
Author(s) -
Chen Changshan,
Zhao Xinsheng
Publication year - 2019
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2018.5321
Subject(s) - mimo , base station , enhanced data rates for gsm evolution , coverage probability , computer science , interference (communication) , user equipment , upper and lower bounds , stochastic geometry , single antenna interference cancellation , cellular network , algorithm , telecommunications , mathematics , statistics , decoding methods , channel (broadcasting) , confidence interval , mathematical analysis
How much performance gain for the user equipment (UE) located at cell‐edge can be obtained, from the interference cancellation (IC) by exploiting extra degrees of freedom in multi‐user massive multiple‐input multiple‐output (MIMO), needs to be investigated. Also, it is necessary to reveal the impact of this IC on the performance of cell‐centre UE (CCU). In this study, the authors separately analyse the coverage probability of cell‐edge UE (CEU) and CCU under the IC in irregular network utilising tools from stochastic geometry. Specifically, the closed‐form expressions for the upper bound of CEU coverage probability and the lower bound of coverage probability for CCU are given out. For large threshold scenario, the authors show the potential of massive MIMO with IC on achieving the cell‐centre‐like experience in a more simple closed‐form formula. Analytical and numerical results show that a reasonable balance between the CEU performance enhancement and the CCU performance degradation under the IC can be reached. Moreover, slight influence of cell‐edge area on the coverage probability for both CEU and CCU is observed. Finally, it is found that the coverage probability of CEU is more sensitive to the variation of density of UEs and the base stations than that of CCU.