Interference channels with source cooperation

Vinod M. Prabhakaran, Pramod Viswanath

Research output: Contribution to journalArticle


In this paper, the role of cooperation in managing interferencea fundamental feature of the wireless channelis investigated by studying the two-user Gaussian interference channel where the source nodes can both transmit and receive in full duplex. The sum capacity of this channel is obtained within a gap of a constant number of bits. The coding scheme used builds up on the superposition scheme of Han and Kobayashi for the two-user interference channel without cooperation. New upperbounds on the sum capacity are also derived. The same coding scheme is shown to obtain the sum capacity of the symmetric two-user Gaussian interference channel with noiseless feedback within a constant gap.

Original languageEnglish (US)
Article number5673849
Pages (from-to)156-186
Number of pages31
JournalIEEE Transactions on Information Theory
Issue number1
StatePublished - Jan 1 2011


  • Cooperation
  • distributed beamforming
  • feedback
  • interference channel
  • multiple-inputmultiple-output (MIMO) broadcast channel
  • sum capacity

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences

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