Aligned Interference Neutralization and the Degrees of Freedom of the Two-User Wireless Networks with an Instantaneous Relay
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SCOPUS
- Title
- Aligned Interference Neutralization and the Degrees of Freedom of the Two-User Wireless Networks with an Instantaneous Relay
- Authors
- Lee, N; Wang, CW
- Date Issued
- 2013-09
- Publisher
- IEEE
- Abstract
- A conventional relay causes a processing delay of at least one symbol duration relative to the direct paths between a source and a destination. This delay caused by using the conventional relay limits the degrees of freedom (DoF) gain in a wireless interference network. In this paper, it is shown that the exploitation of an instantaneous relay (relay-without-delay) improves DoF gain significantly for a two-user wireless network. Specifically, for two different message settings: the interference channel and the X channel, it is shown that a total of 3/2 and 5/3 DoF are achievable almost surely, respectively. The achievable schemes are inspired by the notion of aligned interference neutralization recently proposed for the layered two-user two-hop interference channel.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/37779
- DOI
- 10.1109/TCOMM.2013.071013.120806
- ISSN
- 0090-6778
- Article Type
- Article
- Citation
- IEEE Transactions on Communications, vol. 61, no. 9, page. 3611 - 3619, 2013-09
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