1st Tuesday Journal-Paper Club: November 2015 meeting


Provisonally for our first Tuesday in November Vaughan Clarkson has kindly agreed to be our reader leader on Interference Alignment. This is a major breakthrough in wireless comms that allows us to carve the spectral pie in such a way that we all get half a pie each.

The paper that started it all is Viveck R. Cadambe and Syed Ali Jafar, "Interference alignment and degrees of freedom of the Kô°€-user interference channel”, IEEE Trans. Inform. Th., vol. 54, no. 8, pp. 3425–3441, Aug. 2008. doi: 10.1109/TIT.2008.926344

*About the 1st Tuesday Journal-Paper Club:* the idea is to meet regularly, usually on the 1st Tuesday of the month as the name suggests (inspired by the ABC TV series "1st Tuesday Book Club"). Each month, the participants would agree on a highly cited, 'top ten' or major-prize-winning article in an SPS or ComSoc journal (but not one of our own!). We would also select a Discussion Leader. Through the month, each of the participants would read the article. At the next meeting, the Discussion Leader would lead a discussion of that article, starting with his/her own appraisal. In this way, it is hoped that we could all broaden our understanding of the field and further develop a sense of community. 1st rule of 1st Tuesday Journal-Paper Club: tell everyone about 1st Tuesday Journal-Paper Club.



  Date and Time




  • Date: 03 Nov 2015
  • Time: 06:00 PM to 08:00 PM
  • All times are (UTC+10:00) Brisbane
  • Add_To_Calendar_icon Add Event to Calendar
  • 601 Stanley St.
  • Woolloongabba, Queensland
  • Australia 4102
  • Building: Brewhouse Brisbane

  • Starts 16 September 2015 06:00 AM
  • Ends 03 November 2015 12:00 PM
  • All times are (UTC+10:00) Brisbane
  • No Admission Charge



For the fully connected K user wireless interference channel where the channel coefficients are time-varying and are drawn from a continuous distribution, the sum capacity is characterized as C(SNR)=K/2log(SNR)+o(log(SNR)) . Thus, the K user time-varying interference channel almost surely has K/2 degrees of freedom. Achievability is based on the idea of interference alignment. Examples are also provided of fully connected K user interference channels with constant (not time-varying) coefficients where the capacity is exactly achieved by interference alignment at all SNR values.