BWRC Publications

Citation
Omar Bakr, Mark Johnson, Raghuraman Mudumbai, Kannan Ramchandran. "Multi-antenna interference cancellation techniques for cognitive radio applications". IEEE Wireless Communications and Networking Conference (WCNC), April, 2009.

Abstract
This paper presents a practical method for using multi-antenna radios to cancel interference in cognitive radio systems. Under this method, secondary radio transmitters use beamforming techniques to find antenna weights that place nulls at the primary receivers, and secondary radio receivers use adaptive techniques to decode in the presence of interference from primary users. As an example, we show how this scheme can be leveraged to effectively reuse the uplink band of a cellular network. However, estimating the channel responses, without causing interference and without requiring significant modifications to legacy systems, is a challenging problem. We provide an iterative method for accurate channel estimation in frequency division duplexed networks, where the uplink is independent of the downlink.

Electronic downloads

• WCNC2009_Omar.pdf · application/pdf · 812 kbytes

Citation formats

• HTML

  Omar Bakr, Mark Johnson, Raghuraman Mudumbai, Kannan
  Ramchandran. <a
  href="http://infopad.eecs.berkeley.edu/php/pubs/pubs.php/1041.html">Multi-antenna
  interference cancellation techniques for cognitive radio
  applications</a>, IEEE Wireless Communications and
  Networking Conference (WCNC), April, 2009.

• Plain text

  Omar Bakr, Mark Johnson, Raghuraman Mudumbai, Kannan
  Ramchandran. "Multi-antenna interference cancellation
  techniques for cognitive radio applications". IEEE Wireless
  Communications and Networking Conference (WCNC), April, 2009.

• BibTeX

  @inproceedings{BakrJohnsonMudumbaiRamchandran2009,
      author = {Omar Bakr and Mark Johnson and Raghuraman Mudumbai
                and Kannan Ramchandran},
      title = {Multi-antenna interference cancellation techniques
                for cognitive radio applications},
      booktitle = {IEEE Wireless Communications and Networking
                Conference (WCNC)},
      month = {April},
      year = {2009},
      URL = {http:///php/pubs/pubs.php/1041.html}
  }
  

Posted by Omar Bakr on May 13, 2009..

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