Open AccessDiversity‐multiplexing tradeoff analysis in cooperative wireless networks with a multiple‐antenna relay
Author(s) -
Doorbash Zahra,
Jamshidi Ali
Publication year - 2018
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2017.1022
Subject(s) - relay , computer science , computer network , decoding methods , cooperative diversity , relay channel , wireless , transmission (telecommunications) , multiplexing , diversity gain , wireless network , mimo , antenna diversity , antenna (radio) , telecommunications , fading , channel (broadcasting) , physics , power (physics) , quantum mechanics
Multiple antennas can be used for increasing the amount of diversity or number of degrees of freedom in wireless communication systems. In this study, the authors consider a wireless half‐duplex relay network consisting of one source–destination pair each with a single antenna and one relay with multiple antennas. They assume an approach where cooperation of the relay in the transmission depends on the decoding status at the relay. If the relay participates in transmission, the source and the relay use the distributed space‐time code simultaneously. They derive the outage probability and the diversity‐multiplexing tradeoff for the proposed protocol at high SNR. They have shown that the use of the centralised antennas with simultaneously decoding compared to the distributed antennas with independently decoding can improve the system performance.