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Volume 42 Issue 11
Nov.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(11): 2501-2506.
GUO Qianqian, LIU Feng, ZENG Liansun, et al. Degrees of freedom of networks with coexistence of 2×2 X channel and point-to-point channel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(11): 2501-2506. doi: 10.13700/j.bh.1001-5965.2015.0696(in Chinese)
Citation: GUO Qianqian, LIU Feng, ZENG Liansun, et al. Degrees of freedom of networks with coexistence of 2×2 X channel and point-to-point channel[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(11): 2501-2506. doi: 10.13700/j.bh.1001-5965.2015.0696(in Chinese)
shu

Degrees of freedom of networks with coexistence of 2×2 X channel and point-to-point channel

doi: 10.13700/j.bh.1001-5965.2015.0696

  • Department of Information Engineering, Shanghai Maritime University, Shanghai 201306, China

  • Received Date: 27 Oct 2015
  • Rev Recd Date: 18 Dec 2015
  • Publish Date: 20 Nov 2016
    Abstract
  • Degrees of freedom (DOF) is a spatial multiplexing conception, which was introduced in multiple antenna systems. And it characterizes the utilization efficiency of spatial resource for wireless channels. In the area of cognitive radio, since the primary and secondary networks interfere with each other, the DOF will be reduced. This paper mainly studies the DOF of the network on 2×2 X channel (XC) and point-to-point (PTP) channel which coexist. The result of this paper is also applied to the scenario when the XC has priority over PTP channel. If channel state information (CSI) is available at all transmitters, we propose the signal processing scheme using asymptotic interference alignment approach based on symbol extension model. It is shown that the lower bound of DOF tends to 5/3 when n tends to infinity. A propagation delay model is used to show its achievability. In addition, we analyze the upper bound on the DOF.

     

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    • References(16)
  • [1]
    CADAMBE V R,JAFAR S A.Interference alignment and degrees of freedom of the K-user interference channel[J].IEEE Transactions on Information Theory,2008,54(8):3425-3441.
    [2]
    JAFAR S A,SHAMAI S.Degrees of freedom region of the MIMO X channel[J].IEEE Transactions on Information Theory,2008,54(1):151-170.
    [3]
    YETIS C M,GOU T,JAFAR S A,et al.Feasibility conditions for interference alignment[C]//Global Telecommunications Conference,2009(GLOBECOM 2009).Piscataway,NJ:IEEE Press,2009:1-6.
    [4]
    HUANG C,JAFAR S A.Degrees of freedom of the MIMO interference channel with cooperation and cognition[J].IEEE Transactions on Information Theory,2009,55(9):4211-4220.
    [5]
    CADAMBE V R,JAFAR S A.Interference alignment and the degrees of freedom of wireless X networks[J].IEEE Transactions on Information Theory,2009,55(9):3893-3908.
    [6]
    周璐娜,刘锋,曾连荪.两个点对点(PTP)网络并存时的自由度研究[J].计算机科学,2015,42(1):110-112.ZHOU L N,LIU F,ZENG L S.Research on degrees of freedom of two PTP networks coexistence[J].Computer Science,2015,42(1):110-112(in Chinese).
    [7]
    KIM J,PARK S H,SUNG H,et al.Sum rate analysis of two-cell MIMO broadcast channels:Spatial multiplexing gain[C]//IEEE International Conference on Communications (ICC),2010.Piscataway,NJ:IEEE Press,2010:1-5.
    [8]
    SHIN W,LEE N,LIM J B,et al.On the design of interference alignment scheme for two-cell MIMO interfering broadcast channels[J].IEEE Transactions on Wireless Communications,2011,10(2):437-442.
    [9]
    LEE N,SHIN W,HEATH R W,et al.Interference alignment with limited feedback for two-cell interfering MIMO-MAC[C]//International Symposium on Wireless Communication Systems (ISWCS).Piscataway,NJ:IEEE Press,2012:566-570.
    [10]
    周璐娜,刘锋,曾连荪.CSIT对无线MIMO网络自由度的影响[J].计算机应用研究,2014,31(12):3813-3817.ZHOU L N,LIU F,ZENG L S.Influence of CSIT on degrees of freedom of wireless MIMO networks[J].Application Research of Computer,2014,31(12):3813-3817(in Chinese).
    [11]
    TRESCH R,GUILLAUD M,RIEGLER E.On the achievability of interference alignment in the K-user constant MIMO interference channel[C]//IEEE/SP 15th Workshop on Statistical Signal Processing,2009(SSP'09).Piscataway,NJ:IEEE Press,2009:277-280.
    [12]
    JAFAR S A,FAKHEREDDIN M J.Degrees of freedom for the MIMO interference channel[J].IEEE Transactions on Information Theory,2007,53(7):2637-2642.
    [13]
    ABDOLI M J,GHASEMI A,KHANDANI A K.On the degrees of freedom of K-user SISO interference and X channels with delayed CSIT[J].IEEE Transactions on Information Theory,2013,59(10):6542-6561.
    [14]
    LU Y,WEI Z.On degrees of freedom region of three-user MIMO interference channels[J].IEEE Transactions on Signal Processing,2015,63(3):590-603.
    [15]
    GOU T G,JAFAR S A.Degrees of freedom of the K user M×N MIMO interference channel[J].IEEE Transactions on Information Theory,2010,56(12):6040-6057.
    [16]
    LEE N,LIM J B,CHUN J.Degree of freedom of the MIMO Y channel:Signal space alignment for network coding[J].IEEE Transactions on Information Theory,2010,56(7):3332-3342.
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