Equipping millimeter-wave (mmWave) systems with full duplex capability would accelerate and transform next-generation wireless applications and forge a path for new ones. Full duplex mmWave transceivers could capitalize on the already attractive features of mmWave communication by supplying spectral efficiency gains and latency improvements while also affording future networks deployment solutions in the form of interference management and wireless backhaul. Foreseeable challenges and obstacles in making mmWave full duplex a reality are presented in this article along with noteworthy unknowns warranting further investigation. With these novelties of mmWave full duplex in mind, we lay out potential solutions - beyond active self-interference cancellation - that harness the spatial degrees of freedom bestowed by dense antenna arrays to enable simultaneous transmission and reception in-band.

中文翻译：

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毫米波全双工无线电：新挑战和新技术

配备全双工功能的毫米波（mmWave）系统将加速和转变下一代无线应用，并为新的无线应用铺平道路。全双工mmWave收发器可通过提供频谱效率增益和延迟改善而利用mmWave通信已具有的吸引力，同时还可提供采用干扰管理和无线回程形式的未来网络部署解决方案。本文介绍了使mmWave全双工成为现实的可预见的挑战和障碍，以及值得注意的未知数，值得进一步研究。考虑到mmWave全双工的这些新颖性，