Achieving single channel, full duplex wireless communication
Achieving single channel, full duplex wireless communication
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DOI：
10.1145/1859995.1859997
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
J. Choi;Mayank Jain;K. Srinivasan;P. Levis;S. Katti
中科院分区：
文献类型：
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作者：
J. Choi;Mayank Jain;K. Srinivasan;P. Levis;S. Katti
本文讨论了一种单通道全双工无线收发器的设计。该设计结合了射频和基带技术，以实现全数字化，对链路可靠性的影响最小。在真实的节点上的实验表明，全双工原型系统的性能达到了理想全双工系统的8%以内。本文介绍了天线抵消，这是一种自干扰抵消的新技术。结合现有的RF干扰消除和数字基带干扰消除，天线消除实现了全双工操作所需的自干扰消除量。本文还讨论了全面部署的潜在MAC和网络增益。它提出了全双工系统可以解决现有无线系统中的一些重要问题的方法，包括隐藏终端，由于拥塞造成的吞吐量损失和大的端到端延迟。
This paper discusses the design of a single channel full-duplex wireless transceiver. The design uses a combination of RF and baseband techniques to achieve full-duplexing with minimal effect on link reliability. Experiments on real nodes show the full-duplex prototype achieves median performance that is within 8% of an ideal full-duplexing system. This paper presents Antenna Cancellation, a novel technique for self-interference cancellation. In conjunction with existing RF interference cancellation and digital baseband interference cancellation, antenna cancellation achieves the amount of self-interference cancellation required for full-duplex operation. The paper also discusses potential MAC and network gains with full-duplexing. It suggests ways in which a full-duplex system can solve some important problems with existing wireless systems including hidden terminals, loss of throughput due to congestion, and large end-to-end delays.