2015
DOI: 10.1109/twc.2014.2374169
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The Degrees of Freedom Region of the MIMO Interference Channel With Hybrid CSIT

Abstract: The degrees of freedom (DoF) region of the two-user MIMO (multiple-input multiple-output) interference channel is established under a new model termed as hybrid CSIT. In this model, one transmitter has delayed channel state information (CSI) and the other transmitter has instantaneous CSIT, of incoming channel matrices at the respective unpaired receivers, and neither transmitter has any knowledge of the incoming channel matrices of its respective paired receiver. The DoF region for hybrid CSIT, and consequent… Show more

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Cited by 10 publications
(7 citation statements)
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References 15 publications
(40 reference statements)
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“…Specifically, the DoF region of MIMO networks (BC/IC) in this setting with general antenna configuration and general current CSIT qualities has been fully characterized, thanks to a simple yet unified framework employing interference quantization, block-Markov encoding and backward decoding techniques. Our DoF regions generalize a number of existing results under more specific CSIT settings, such as delayed CSIT [5][6][7], perfect CSIT [2,3], partial/hybrid/mixed CSIT [23][24][25].…”
Section: Discussionsupporting
confidence: 71%
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“…Specifically, the DoF region of MIMO networks (BC/IC) in this setting with general antenna configuration and general current CSIT qualities has been fully characterized, thanks to a simple yet unified framework employing interference quantization, block-Markov encoding and backward decoding techniques. Our DoF regions generalize a number of existing results under more specific CSIT settings, such as delayed CSIT [5][6][7], perfect CSIT [2,3], partial/hybrid/mixed CSIT [23][24][25].…”
Section: Discussionsupporting
confidence: 71%
“…It is worth noting that our results embrace the previously reported particular cases: the perfect CSIT setting [2,3] (i.e., current CSIT of perfect quality), the pure delayed CSIT setting [6,7] (i.e., current CSIT of zero quality), the partial/hybrid CSIT MIMO BC/IC case [23][24][25] (with perfect CSIT at one receiver and delayed CSIT at the other one), and the special MISO case [13][14][15] with N 1 = N 2 = 1, symmetric MIMO case [16], as well as the MISO case with asymmetric current CSIT qualities [18].…”
supporting
confidence: 76%
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“…In [10], [11], the approach is adapted to two-user and three-user settings with multiple-antenna at the RXs, and to Interference Channels (ICs) and X-channels in [12]- [15], among others. In [16], the IC with TXs having unequal CSIT is also investigated.…”
Section: Introductionmentioning
confidence: 99%
“…In [25], the authors presented a hybrid CSIT model where one transmitter has perfect and instantaneous knowledge of channel matrices corresponding to one user while the other transmitter has only delayed CSI corresponding to the other user, and derived the DoF region of the MIMO interference channel with hybrid CSIT. Moreover, the DoF regions of MIMO interference channel and broadcast channel without CSIT were derived in [26], and in addition to MIMO interference channel and broadcast channel, the DoF region of a cognitive radio channel without CSIT was reported in [27].…”
mentioning
confidence: 99%