A degrees of freedom-optimal scheme for SISO X channel with synergistic alternating CSIT
Author | Wagdy, Ahmed |
Author | El-Keyi, Amr |
Author | Khattab, Tamer |
Author | Nafie, Mohammed |
Available date | 2022-10-31T19:21:53Z |
Publication Date | 2014 |
Publication Name | IEEE International Symposium on Information Theory - Proceedings |
Resource | Scopus |
Abstract | In this paper, the degrees of freedom (DoF) of the two-user single input single output (SISO) X channel are investigated. Three cases are considered for the availability of channel state information at the transmitters (CSIT); perfect, delayed, and no-CSIT. A new achievable scheme is proposed to elucidate the potency of interference creation-resurrection (IRC) when the available CSIT alternates between these three cases. For some patterns of alternating CSIT, the proposed scheme achieves 4/3 DoF, and hence, coincides with the information theoretic upper bound on the DoF of the X channel with perfect and instantaneous CSIT. The CSIT alternation patterns are investigated where the patterns that provide extraordinary synergistic gain and dissociative ones are identified. 2014 IEEE. |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | Interference Receivers Transmitters Availability Equations Upper bound Information theory |
Type | Conference Paper |
Pagination | 376-380 |
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Electrical Engineering [2647 items ]