Over-the-Air Testing of Cognitive Radio Nodes in a Virtual Electromagnetic Environment

Over-the-Air Testing of Cognitive Radio Nodes in a Virtual Electromagnetic Environment
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虚拟电磁环境中认知无线电节点的无线测试

DOI：
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发表时间：
2013
期刊：
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通讯作者：
Reiner S. Thomä
Reiner S. Thomä
中科院分区：
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文献类型：
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作者：
Rajesh K. Sharma;W. Kotterman;M. Landmann;Christopher;Schirmer;C. Schneider;Frank Wollenschläger;Giovanni Del;Galdo;Matthias A. Hein;Reiner S. Thomä

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本文提供了正在进行的研究的概述。 在针对下一代通信的无线(OTA)测试中 以及特别考虑认知无线电(CR)的数据传输设备。讨论了现有最先进的技术及其优点和局限性。我们确定了虚拟电磁环境(OTAinVEE)中的OTA测试的要求和问题，这需要解决 未来网络的情况更加复杂，干扰仿真将成为一项极具挑战性的任务。由于试图以动态方式同时利用几个机会维度，例如频率、时间、方向(空间)和极化，因此出现了复杂的干扰场景 多用户场景。虽然MIMO-OTA测试解决了单天线传导测试系统的许多限制，但新场景中需要解决的更多维度和参数意味着成本和复杂性的进一步增加。讨论了用于CR评估的闭环OTA测试设置以及其他测试场景的概述。
This paper provides an overview of ongoing research in over-the-air (OTA) testing for next-generation communication and data transmission devices with special consideration of cognitive radio (CR). Existing state-of-the-art techniques and their merits and limitations are discussed. We identify the requirements and issues for the OTA test in a virtual electromagnetic environment (OTAinVEE) which needs to address the more complex scenario of future networks, where interference emulation becomes a highly challenging task. A complex interference scenario arises due to the attempt to simultaneously utilize several opportunity dimensions such as frequency, time, direction (space), and polarization, in a dynamic manner in a multiuser scenario. Although MIMO-OTA testing addresses many limitations of single antenna-conducted test systems, more dimensions and parameters to be addressed in the new scenarios imply further increase in cost and complexity. Closed-loop OTA test setups for CR evaluation are discussed along with an overview of other test scenarios.