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On the Achievable Degrees of Freedom of a Relay Aided X-Channel

المؤلفAbumaali D.
المؤلفBadawy A.
المؤلفKhattab T.
تاريخ الإتاحة2020-03-03T06:19:37Z
تاريخ النشر2018
اسم المنشور2018 14th International Wireless Communications and Mobile Computing Conference, IWCMC 2018
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1109/IWCMC.2018.8450455
معرّف المصادر الموحدhttp://hdl.handle.net/10576/13223
الملخصIn this paper, we investigate the effect of a relay on the Degrees of Freedom (DoF) of a single input single output (SISO) X-channel with no channel state information at transmitters (CSIT). In contrast to previous work, which focused on two antennas at the relay to achieve the optimal 4/3 DoF, we focus on the case of a single antenna half duplex relay. We show that with a single antenna relay and delayed output feedback, the upper bound of 4/3 DoF for the X-channel is achievable and we propose the achievability scheme. Moreover, we study the alternating CSIT availability distribution for the SISO X-channel and provide few remarks on the achievability of the optimal DoF.
راعي المشروعThis research work was made possible by grant number NPRP 7-923-2-344 from the Qatar National Research Fund, QNRF (a member of the Qatar Foundation, QF). The statements made herein are solely the responsibility of the authors.
اللغةen
الناشرInstitute of Electrical and Electronics Engineers Inc.
الموضوعasymptotic network capacity.
Degrees of Freedom (DoF)
relay channel
X-channel
العنوانOn the Achievable Degrees of Freedom of a Relay Aided X-Channel
النوعConference Paper
الصفحات823 - 827


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