Three-User MIMO Broadcast Channel with Delayed CSIT: A Higher Achievable DOF
Refereed conference paper presented and published in conference proceedings

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AbstractDegrees of freedom (DoF) of the three-user multiple-input multiple output (MIMO) broadcast channel (BC) with delayed CSIT was derived for most antenna configurations except for 2N < M < 3N antenna configurations, where transmitter has M antennas and each receiver has N antennas. In this paper, for that problem, we propose an effective scheme for acquiring a higher achievable DoF than the value via existing methods. In the initial transmission phase, we transmit more data symbols than the amount that the receivers can instantaneously decode. Then, we generate auxiliary symbols for decoding the data symbols. Specifically, our scheme introduces an integrated design for the generation of auxiliary symbols. As a result, a higher achievable DoF, i.e., 12MN/(7M+2N) , can be achieved for 2N < M < 2:5N antenna configurations.
Acceptance Date30/01/2018
All Author(s) ListTong Zhang, Xiongwei Wu, Yinfei Xu, Yao Ge, P.C. Ching
Name of Conference2018 IEEE International Conference on Acoustics, Speech and Signal Processing
Start Date of Conference15/04/2018
End Date of Conference20/04/2018
Place of ConferenceCalgary, Alberta
Country/Region of ConferenceCanada
Proceedings Title2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)
Pages3709 - 3713
LanguagesEnglish-United States
KeywordsDelayed CSIT, Degrees of Freedom, MIMO broadcast channel, multi-phase transmission, interference alignment

Last updated on 2020-02-12 at 01:50