The aim of this letter is to develop a new design of cognitive radio inspired non-orthogonal multiple access (CR-NOMA), which ensures that multiple new users can be supported without causing disruption to the legacy network. Analytical results are developed to characterize the statistical properties of the number of supported new users. The developed CRNOMA scheme is compatible to various communication networks, because it can be implemented as a simple add-on. An example of using CR-NOMA as an add-on in time-division multiple access networks for age of information (AoI) reduction is illustrated, where analytical results are developed to demonstrate

翻译：本文旨在提出一种新的基于认知无线电的非正交多址接入（CR-NOMA）设计方案，该方案能够在不对传统网络造成干扰的前提下支持多个新用户接入。通过理论分析，推导了所支持新用户数量的统计特性。所提出的CR-NOMA方案具有与多种通信网络的兼容性，因其可作为简单的附加模块实现。本文以CR-NOMA在时分多址网络中作为附加模块用于降低信息年龄（AoI）为例，通过理论分析验证其性能。