Acta Metallurgica Sinica(English letters) ›› 2014, Vol. 21 ›› Issue (2): 9-14.doi: 10.1016/S1005-8885(14)60280-6

• Networks • Previous Articles     Next Articles

Joint power and spectrum allocation in multi-hop cognitive radio networks


  • Received:2013-06-14 Revised:2014-02-21 Online:2014-04-30 Published:2014-04-30
  • Supported by:

    the Hi-Tech Research and Development Program of China (2012AA01A508), the Beijing Higher Education Young Elite Teacher Project (YETP0432), the Specialized Research Fund for the Doctoral Program of Higher Education (20120005120010).


Various cognitive network technologies are developed rapidly. In the article, the power and spectrum allocation in multi-hop cognitive radio network (CRN) with linear topology is investigated. The overall goal is to minimize outage probability and promote spectrum utility, including total reward and fairness, while meeting the limits of total transmit power and interference threshold to primary user simultaneously. The problem is solved with convex optimization and artificial bee colony (ABC) algorithm jointly. Simulation shows that the proposed scheme not only minimizes outage probability, but also realizes a better use of spectrum.

Key words:

cognitive radio, power allocation, outage probability, spectrum utility, ABC algorithm