On network interference management

Aleksandar Jovičić, Hua Wang, Pramod Viswanath

Research output: Contribution to journalArticle

Abstract

We study two building-block models of interference-limited wireless networks, motivated by the problem of joint Peer-to-Peer and Wide Area Network design. In the first case, a single long-range transmitter interferes with multiple parallel short-range transmissions, and, in the second case, multiple short-range transmitters interfere with a single long-range receiver. We identify the maximal degree-of-freedom region of the former network and show that multilevel superposition coding by the long-range transmitter performs optimally. Moreover, a simple power control strategy, performed by the long-range transmitter, achieves a region that is within one bit of the capacity region, under certain channel conditions. For the latter network, we show that short-range transmitter power control is degree-of-freedom optimal under certain channel conditions.

Original languageEnglish (US)
Article number5571914
Pages (from-to)4941-4955
Number of pages15
JournalIEEE Transactions on Information Theory
Volume56
Issue number10
DOIs
StatePublished - Oct 1 2010

Keywords

  • Gaussian interference channel
  • generalized degrees of freedom
  • interference network
  • many-to-one
  • one-to-many

ASJC Scopus subject areas

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

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