Distributed full-duplex via wireless side-channels: Bounds and protocols

Jingwen Bai, Ashutosh Sabharwal

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


In this paper, we study a three-node full-duplex network, where a base station is engaged in simultaneous up-and downlink communication in the same frequency band with two half-duplex mobile nodes. To reduce the impact of inter-node interference between the two mobile nodes on the system capacity, we study how an orthogonal side-channel between the two mobile nodes can be leveraged to achieve full-duplex-like multiplexing gains. We propose and characterize the achievable rates of four distributed full-duplex schemes, labeled bin-and-cancel, compress-and-cancel, estimate-and-cancel and decode-and-cancel. Of the four, bin-and-cancel is shown to achieve within 1 bit/s/Hz of the capacity region for all values of channel parameters. In contrast, the other three schemes achieve the near-optimal performance only in certain regimes of channel values. Asymptotic multiplexing gains of all proposed schemes are derived to show that the side-channel is extremely effective in regimes where inter-node interference has the highest impact.

Original languageEnglish (US)
Article number6571320
Pages (from-to)4162-4173
Number of pages12
JournalIEEE Transactions on Wireless Communications
Issue number8
StatePublished - 2013


  • capacity region
  • device-to-device communication
  • Full-duplex wireless
  • interference management
  • wireless side-channels

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Distributed full-duplex via wireless side-channels: Bounds and protocols'. Together they form a unique fingerprint.

Cite this