PHY研究是病态的，但可以治愈：一个实证分析
PHY Research Is Sick but Curable: An Empirical Analysis
摘要：
自蜂窝通信范式成熟以来，关于物理层（PHY）学术研究对无线通信的有用性的争议和争论一直存在。特别是，研究人员怀疑蜂窝通信的性能改善主要归因于电信基础设施和无线电频谱的增加，而不是PHY学术研究，但缺乏具体的证据。为了从客观的角度回应这一争议，我们采用计量经济学的方法来量化物理学术研究和其他绩效决定因素的贡献。通过实证分析和获得的定量证据，尽管是初步的，我们阐明了以下问题：1）是什么决定了蜂窝网络性能的跨国差异; 2）物理层学术研究和其他因素在多大程度上影响蜂窝网络性能; 3）我们可以从数据分析中获得什么建议物理层研究的利益相关者。据我们所知，这篇文章是第一个“实证电信研究”，第一次努力涉及计量经济学方法来评估物理学学术研究的有用性。
英文摘要：
The controversy and argument on the usefulness of the physical layer (PHY) academic research for wireless communications are long-standing since the cellular communication paradigm gets to its maturity. In particular, researchers suspect that the performance improvement in cellular communications is primarily attributable to the increases in telecommunication infrastructure and radio spectrum instead of the PHY academic research, whereas concrete evidence is lacking. To respond to this controversy from an objective perspective, we employ econometric approaches to quantify the contributions of the PHY academic research and other performance determinants. Through empirical analysis and the quantitative evidence obtained, albeit preliminary, we shed light on the following issues: 1) what determines the cross-national differences in cellular network performance; 2) to what extent the PHY academic research and other factors affect cellular network performance; 3) what suggestions we can obtain from the data analysis for the stakeholders of the PHY research. To the best of our knowledge, this article is the first `empirical telecommunication research,' and the first effort to involve econometric methodologies to evaluate the usefulness of the PHY academic research.
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