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Informational bottlenecks in two-unicast wireless networks with delayed CSIT [PDF]
2015 53rd Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2015 In proceedings of the 53rd Annual Allerton Conference on Communication, Control, and ...
Ilan Shomorony +2 more
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On the degrees of freedom of X channel with delayed CSIT
2011 IEEE International Symposium on Information Theory Proceedings, 2011Akbar Ghasemi, Amir K Khandani
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Time-correlated MISO wiretap channel with delayed CSIT
2013 IEEE 14th Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2013We consider the time-correlated multiple-input single-output (MISO) wiretap channel where a multi-antenna transmitter wishes to convey a confidential message to its receiver in the presence of an eavesdropper. Assuming that the transmitter with delayed channel state information acquires some knowledge on current channel state due to the temporal ...
Mari Kobayashi +2 more
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On the degrees of freedom of MIMO X channel with delayed CSIT
2012 IEEE International Symposium on Information Theory Proceedings, 2012The multiple-input multiple-output (MIMO) Gaussian X channel in i.i.d. fading environment and with delayed channel state information at transmitters (delayed CSIT) is considered. It is assumed that each transmitter has M antennas and each receiver has N antennas.
Akbar Ghasemi +2 more
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Degrees of Freedom of the MIMO Z-Interference Channel With Delayed CSIT
IEEE Communications Letters, 2015The degrees of freedom region is established for the 2-user multiple-input multiple-output Z-interference channel with an arbitrary number of antennas at each node, under the assumption of delayed channel state information at the transmitters. A new interference alignment scheme is obtained and is shown to be optimal in the degrees of freedom (DoF ...
Kaniska Mohanty, Mahesh K. Varanasi
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On the achievable degrees of freedom of the MIMO X-channel with delayed CSIT
2016 IEEE Information Theory Workshop (ITW), 2016We consider the two-user multiple-input multiple-output X-channel where the transmitters 1, 2 have M 1 ,M 2 antennas and the receivers 1, 2 have N 1 ,N 2 antennas, respectively, and study the achievable number of degrees of freedom (DoF) of this network under the assumption of delayed channel state information at the transmitters.
Alexey Buzuverov +2 more
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On the degrees of freedom of SISO interference and X channels with delayed CSIT
2011 49th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2011The SISO (single-input single-output) AWGN interference and X channels in i.i.d. fading environment are considered where the transmitters have the past channel state information (CSI) through noiseless feedback links. New transmission schemes are proposed for these channels that achieve degrees of freedom (DoF) values greater than one (except for two ...
Mohammad Javad Abdoli +2 more
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The degrees of freedom region of the MIMO interference channel with delayed CSIT
2011 IEEE International Symposium on Information Theory Proceedings, 2011The degrees of freedom (DoF) region of the 2-user MIMO interference channel (IC) is studied under fast fading and the assumption of delayed channel state information at transmitters (CSIT) wherein the receivers know all channel matrices perfectly and the transmitters acquire this knowledge with a certain delay. An outer bound to the DoF region is first
Chinmay S. Vaze, Mahesh K. Varanasi
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Secure MIMO Interference Channel with Confidential Messages and Delayed CSIT
ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019Secure degrees-of-freedom (SDoF) for multiple-input multiple-output (MIMO) interference channel with confidential messages and delayed channel state information at transmitter (CSIT) remains unclear, even for single-input single-output (SISO) case. In this paper, we propose an achievable SDoF for MIMO interference channel with confidential messages and
Tong Zhang 0026, P. C. Ching
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Finite Field X-Channels with Delayed CSIT and Common Messages
2018 IEEE International Symposium on Information Theory (ISIT), 2018We establish the capacity region of the two-user finite field X-Channels with delayed channel state information at the transmitters. We consider the most general case in which each transmitter has a common message for both receivers and a private message for each one of them. We derive a new set of outer-bounds for this problem that rely on an extremal
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