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Diversity-Multiplexing Tradeoff of the Two-User X-channel with Two Antennas
KDDI Res Inc, Fujimino, Japan.
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationssystem och –teknologi.
Korea Adv Inst Sci & Technol, Daejeon, South Korea.
2019 (engelsk)Inngår i: ICC 2019 - 2019 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), 2019Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Besides maximizing multiplexing gain. improving diversity is important for reliable communications in the presence of interference. In this context, on-off switched interference alignment (IA) is investigated, where IA is intermittently utilized by switching IA on/off in order to improve diversity gain in an interference channel and hence to maximize diversity multiplexing tradeoff (DMT). This paper adopts Alamouti coding based IA for the on-off switched IA, which requires only local channel state information at the transmitter. Optimizing the portion of IA utilization of the proposed scheme in closed form, we derive the achievable DMT and show that the intermittent utilization of IA with simultaneous non-unique decoding can improve DMT in the 2-user X-channel with two antennas. The proposed scheme, to the best of our knowledge, surpasses any other existing schemes for the 2-user X-channel with two antennas and is closed to the ideal DMT.

sted, utgiver, år, opplag, sider
2019.
Serie
IEEE International Conference on Communications, ISSN 1550-3607
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-37673DOI: 10.1109/ICC.2019.8761972ISI: 000492038805095ISBN: 978-1-5386-8088-9 (tryckt)OAI: oai:DiVA.org:miun-37673DiVA, id: diva2:1370118
Konferanse
IEEE International Conference on Communications (ICC), Shanghai, PEOPLES R CHINA, MAY 20-24, 2019
Tilgjengelig fra: 2019-11-14 Laget: 2019-11-14 Sist oppdatert: 2020-01-09bibliografisk kontrollert

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