本文件针对点对点固定无线电系统定义了能效，并考虑了该技术的具体特点。描述了获得公式所用的技术背景和方法，以及执行相关措施的试验条件。由于固定无线系统具有各种架构、应用和设置的特殊性，使用适用于所有类别系统的单一公式定义能效的目标非常具有挑战性，甚至可能在技术上产生误导。因此，本文件的主要部分旨在解释用于推导EEER（定义为设备能效比）的方法。所提供的技术说明是对给定定义的必要补充，因为它有助于理解问题的复杂性以及应如何使用公式。 如果技术委员会打算进一步进行目前的分析，并从给定的定义中得出任何实际的标准化活动，这一点尤其重要。

The present document defines the Energy Efficiency specifically for Point-to-point fixed radio systems, taking into account the specific characteristics of that technology. The technical background and the methodology used to obtain the formula are described together with the test conditions within which carrying out the related measures.Due to the peculiarity of fixed wireless systems, having various architectures, applications and set-ups, the target to define the Energy Efficiency with a single formula valid for all the categories of systems is very challenging and could be even technically misleading.As consequence, the main part of the present document is intended to explain the methodology used to derive the EEER, defined as the Equipment Energy Efficiency Ratio. The provided technical description is the necessary complement of the given definition, as it helps to understand the complexity of the matter and how the formula should be used.That is particularly important in the event that Technical Committees intend to further proceed with the present analysis and derive from the given definition any practical standardization activities.