A Prototype of Co-Frequency Co-Time Full Duplex Networking

Meng Ma, Shuyi Tian, Yingyang Chen, Li Wang, Yuli Yang, Lei Wan, Bingli Jiao, H. Vincent Poor

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
Article number8994204
Pages (from-to)132-139
Number of pages8
JournalIEEE Wireless Communications
Volume27
Issue number1
DOIs
StatePublished - Feb 2020

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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    Ma, M., Tian, S., Chen, Y., Wang, L., Yang, Y., Wan, L., Jiao, B., & Poor, H. V. (2020). A Prototype of Co-Frequency Co-Time Full Duplex Networking. IEEE Wireless Communications, 27(1), 132-139. [8994204]. https://doi.org/10.1109/MWC.001.1800565