Tianming Feng;Chenyu Wu;Xiaodong Zheng;Peilin Chen;Yilong Liu;Shuai Han
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引用次数: 0
Abstract
This article provides a fine-grained performance analysis of a multiantenna cache-enabled network with interference nulling (IN) employed at base stations. Two IN schemes, namely, the fixed IN scheme and the flexible IN scheme are considered to improve the received signal-to-interference ratio (SIR) at users. To thoroughly explore the effects of the caching parameter and the IN parameters on the network performance, we focus on the analysis of not only the successful transmission probability (STP) but the link reliability distribution. First, the expression for the STP of each IN scheme is derived. Then, for the link reliability analysis of each IN scheme, an approximation for the SIR metadistribution is obtained by deriving the first and second moments of an upper bound of the link reliability and utilizing the beta distribution, and an approximated expression for the variance of link reliability is also derived. With this analytical framework, we compare the performance of these two IN schemes and gain some useful system design guidelines from the perspectives of STP and the link reliability distribution.
期刊介绍:
This publication provides a systems-level, focused forum for application-oriented manuscripts that address complex systems and system-of-systems of national and global significance. It intends to encourage and facilitate cooperation and interaction among IEEE Societies with systems-level and systems engineering interest, and to attract non-IEEE contributors and readers from around the globe. Our IEEE Systems Council job is to address issues in new ways that are not solvable in the domains of the existing IEEE or other societies or global organizations. These problems do not fit within traditional hierarchical boundaries. For example, disaster response such as that triggered by Hurricane Katrina, tsunamis, or current volcanic eruptions is not solvable by pure engineering solutions. We need to think about changing and enlarging the paradigm to include systems issues.