With Full Duplex (FD), wireless terminal is capable of transmitting and receiving data simultaneously in the same frequency resources, however, it introduces self interference and co-channel interference. Even though various signal processing techniques are emerged to cancel the self interference, the bottleneck for FD performance in cellular systems is the co-channel interference from the other uplink and downlink signals. In this work we have studied both the uplink and downlink performances of a FD cellular network, where users employ fractional power control in uplink. We use Matern Cluster Process to model the network, which provides a tractable and realistic model to characterize the user-base station distances which are needed for uplink power control. Based on the obtained coverage probabilities, rates and their robust approximations, we show that while FD improves downlink performance, it severely hurts the uplink performance. Also, we provide a trade-off between uplink and downlink performances. Our study suggests dense deployment of low power base stations can improve the performance of FD system.

翻译：在全双工（FD）模式下，无线终端能够使用相同频率资源同时进行数据收发，但这也引入了自干扰和同信道干扰。尽管已有多种信号处理技术可消除自干扰，但蜂窝系统中全双工性能的瓶颈在于来自其他上行与下行信号的同信道干扰。本研究分析了采用部分功率控制的上行用户在全双工蜂窝网络中的上行与下行性能。我们采用Matern簇过程对网络进行建模，该模型能够以可解且贴近实际的方式刻画功率控制所需的用户-基站距离分布。基于所获得的覆盖概率、速率及其稳健近似，结果表明全双工虽能提升下行性能，但会严重损害上行性能。同时，我们给出了上行与下行性能之间的权衡关系。研究表明，密集部署低功率基站可改善全双工系统的整体性能。