Enhanced outage performance with adaptive linear precoding in cognitive radio downlink

F. A. Khan*, C. Masouros, T. Ratnarajah

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we investigate the outage performance of interference aided adaptive linear precoding in the downlink of a multiuser multiple-input-single- output (MISO) overlay cognitive radio (CR) network. While previous research studies on linear precoding techniques in CR network aim to limit or completely cancel the interference to the primary users while achieving maximum downlink throughput of the CR system, we here make use of adaptive linear precoding at the cognitive base station (CBS) to exploit the interference to the primary and the secondary systems. We show by analysis and simulations that the outage performance of the proposed precoding technique is significantly enhanced in comparison to the conventional techniques.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
Pages1859-1863
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2012
Event2012 IEEE International Conference on Communications, ICC 2012 - Ottawa, ON, United Kingdom
Duration: 10 Jun 201215 Jun 2012

Conference

Conference2012 IEEE International Conference on Communications, ICC 2012
CountryUnited Kingdom
CityOttawa, ON
Period10/06/1215/06/12

Keywords

  • Cognitive radio
  • linear precoding
  • outage capacity
  • overlay
  • zero-forcing

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