J4 ›› 2011, Vol. 38 ›› Issue (4): 20-25+37.doi: 10.3969/j.issn.1001-2400.2011.04.004

• Original Articles • Previous Articles     Next Articles

Joint resource management in multi-antenna cognitive radio networks

LI Zhao;ZHAO Linjing;LIU Qin   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2010-06-15 Online:2011-08-20 Published:2011-09-28
  • Contact: LI Zhao E-mail:zli_19912@126.com

Abstract:

This paper designs signal processing algorithms at transmitter and receiver ends jointly in multi-antenna cognitive radio networks. Accordingly the cognitive system could coexist with the primary in one occupied authorized frequency channel without interfering with the primary. Based on the algorithms we devise a spatio-temporal resource model, and then propose a joint resource management method. Simulation results show that compared with non-coexistent method, the proposed scheme could effectively improve the performance of the cognitive system on the premise that cognitive transmission imposes no interference on the primary.

Key words: cognitive radio, multiple antennas, precoding, blocking probability

CLC Number: 

  • TN929.5

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