Interference alignment aided by relays for the quasi-static X channel
- Authors
- Jin, Dong-Sup; No, Jong-Seon; Shin, Dong-Joon
- Issue Date
- Oct-2011
- Publisher
- IEEE
- Keywords
- channel; Full-duplex relaying; half-duplex relaying; interference alignment (IA); relay-aided interference alignment
- Citation
- IEEE International Symposium on Information Theory - Proceedings, pp.2637 - 2641
- Indexed
- SCOPUS
- Journal Title
- IEEE International Symposium on Information Theory - Proceedings
- Start Page
- 2637
- End Page
- 2641
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167438
- DOI
- 10.1109/ISIT.2011.6034048
- ISSN
- 2157-8104
- Abstract
- In this paper, two relay-aided interference alignment (IA) schemes are proposed for the quasi-static M×2 X channel. The first scheme utilizes one full-duplex relay and the second scheme utilizes two half-duplex relays. In the proposed schemes, transmitters transmit in every time slot and relays operate in amplify-and-forward (AF) mode. By confirming the linear independence between the desired signals and interference and also among the desired signals, it is shown that the proposed schemes can achieve 2M/(M + 1) degrees of freedom (DoF) which is the maximum DoF of M× 2 X channel.
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