Quality-Sensitive Price Competition in Secondary Market Spectrum Oligopoly - Single Location Game

Arnob Ghosh, Saswati Sarkar

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We investigate a spectrum oligopoly market where each primary seeks to sell its channel to a secondary. Transmission rate of a channel evolves randomly. Each primary needs to select a price depending on the transmission rate of its channel. Each secondary selects a channel depending on the price and the transmission rate of the channel. We formulate the above problem as a noncooperative game. We show that there exists a unique Nash equilibrium (NE) and explicitly compute it. Under the NE strategy profile, a primary prices its channel to render the channel that provides high transmission rate more preferable; this negates the perception that prices ought to be selected to render channels equally preferable to the secondary regardless of their transmission rates. We show the loss of revenue in the asymptotic limit due to the noncooperation of primaries. In the repeated version of the game, we characterize a subgame perfect NE where a primary can attain a payoff arbitrarily close to the payoff it would obtain when primaries cooperate.

Original languageEnglish (US)
Article number7131583
Pages (from-to)1894-1907
Number of pages14
JournalIEEE/ACM Transactions on Networking
Issue number3
StatePublished - Jun 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


  • Cognitive radio network
  • Nash equilibrium
  • Shannon capacity
  • price competition in wireless network
  • quality of service
  • spectrum sharing

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