Radio FD has emerged as an attractive technique capable of doubling the spectral efficiency over half duplex. However, for signal reception, an FD node needs to suppress its transmitter's signals quite significantly. In point to point communication systems, these transmitter signals are termed self-interference. When working with an FD mobile network, the self-interference problem becomes much more complicated because the receiver of an FD base station (BS) receives interference not only from its BS transmitter in its cell, but also from those in the surrounding cells. For the UL channel, self-interference extends to the problem of multiple interference. And, a similar interference problem can be found among the MSs over a DL channel. In both cases, the interference owing to the FD implementation spreads beyond the scope of the self-interference. This article describes the development of FD BSs that use antenna arrays to deal with the BSs' interference, and thus enable FD communication over the UL channel, where the theoretical focus is placed on how to use the antenna array to nullify the multiple interference and receive the signals of the desired MSs simultaneously. To complete the system construction, FD MSs have also been developed to enable DL transmission. A prototype system is described for the scenario of two cells and one FD MS for tests of FD communication over UL channels and DL channels in terms of video performance. Good video quality is demonstrated at both the BS and MS.

中文翻译：

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同频同时全双工网络的原型

FD无线电已经成为一种有吸引力的技术，能够使半双工的频谱效率提高一倍。但是，对于信号接收，FD节点需要相当大地抑制其发射机信号。在点对点通信系统中，这些发射机信号称为自干扰。当与FD移动网络一起工作时，自干扰问题变得更加复杂，因为FD基站（BS）的接收器不仅从其小区中的BS发送器接收干扰，而且还从周围小区中的接收器接收干扰。对于UL信道，自干扰扩展到多重干扰的问题。并且，可以在DL信道上的MS之间发现类似的干扰问题。在这两种情况下 由于使用FD造成的干扰超出了自干扰的范围。本文介绍了使用天线阵列来处理BS的FD BS的发展，从而实现了在UL通道上进行FD通信的理论，重点是如何使用天线阵列来消除多重干扰并接收信号。所需MS的信号同时进行。为了完成系统构建，还开发了FD MS来支持DL传输。针对两个小区和一个FD MS的场景，描述了一种原型系统，用于在视频性能方面测试UL通道和DL通道上的FD通信。BS和MS均显示出良好的视频质量。干扰，从而实现通过UL信道的FD通信，其中的理论重点是如何使用天线阵列消除多重干扰并同时接收所需MS的信号。为了完成系统构建，还开发了FD MS来支持DL传输。针对两个小区和一个FD MS的场景，描述了一种原型系统，用于在视频性能方面测试UL通道和DL通道上的FD通信。BS和MS均显示出良好的视频质量。干扰，从而实现在UL信道上的FD通信，其中的理论重点是如何使用天线阵列消除多重干扰并同时接收所需MS的信号。为了完成系统构建，还开发了FD MS来支持DL传输。针对两个小区和一个FD MS的场景，描述了一种原型系统，用于在视频性能方面测试UL通道和DL通道上的FD通信。BS和MS均显示出良好的视频质量。还开发了FD MS以实现DL传输。针对两个小区和一个FD MS的场景，描述了一种原型系统，用于在视频性能方面测试UL通道和DL通道上的FD通信。BS和MS均显示出良好的视频质量。还开发了FD MS以实现DL传输。针对两个小区和一个FD MS的场景，描述了一种原型系统，用于在视频性能方面测试UL通道和DL通道上的FD通信。BS和MS均显示出良好的视频质量。