dc.contributor.author | Zebardast, Hamideh | |
dc.contributor.author | Tajer, Ali | |
dc.contributor.author | Maham, Behrouz | |
dc.contributor.author | Rezaee, Mohsen | |
dc.date.accessioned | 2016-11-30T08:40:58Z | |
dc.date.available | 2016-11-30T08:40:58Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Hamideh Zebardast, Ali Tajer, Behrouz Maham and Mohsen Rezaee; 2015; Relay X Channels without Channel State Information at the Transmit Sides: Degrees of Freedom; 2015 IEEE Wireless Communications and Networking Conference (WCNC); http://nur.nu.edu.kz/handle/123456789/2042 | ru_RU |
dc.identifier.uri | http://nur.nu.edu.kz/handle/123456789/2042 | |
dc.description.abstract | This paper focuses on the two-user relay-assisted X channel with no channel state information (CSI) available at the transmitter side. Two relaying modes, namely half-duplex decode-and-forward (DF) and cognitive relays, are considered and the degrees of freedom (DoF) are characterized. It is shown that assisted by a half-duplex DF relay that is equipped with 2M antennas, the X channel with two M-antenna users has 4M/3 DoF, which is achievable through interference alignment (IA). Furthermore, it is shown that in this channel, an M-antenna cognitive relay (with non-causal access to information streams) provides 2M DoF using interference cancellation (IC) technique. In this setting, IC outperforms interference alignment in the cognitive relay mode, since the latter achieves 4M/3 DoF. | ru_RU |
dc.language.iso | en | ru_RU |
dc.publisher | 2015 IEEE Wireless Communications and Networking Conference (WCNC) | ru_RU |
dc.rights | Attribution-NonCommercial-ShareAlike 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/3.0/us/ | * |
dc.subject | Relays | ru_RU |
dc.subject | Interference | ru_RU |
dc.subject | Transmitters | ru_RU |
dc.subject | Receiving antennas | ru_RU |
dc.subject | Integrated circuits | ru_RU |
dc.title | Relay X Channels without Channel State Information at the Transmit Sides: Degrees of Freedom | ru_RU |
dc.type | Conference Paper | ru_RU |
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