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- Title
Outage probability of scheduled MRT scheme in cognitive MISO networks with imperfect CSI.
- Authors
Jing Yang; Xinyu Wu; Nguyen, Hien M.; Jie Ding
- Abstract
In this study, the authors assess the performance of a cognitive multiple-input single-output (MISO) network, where the secondary base station schedules a secondary destination Dk* to communicate from K candidates, by employing scheduled maximal ratio transmission (MRT) scheme. A practical scenario is considered where imperfect channel state information (CSI) is taken into account. Specially, assuming Rayleigh fading channels, the exact expression for the cumulative distribution function of the received signal-to-noise ratio (SNR) at Dk* is derived, from which the outage probability (OP) at Dk* is obtained. An asymptotic expression for the OP at high SNR region is also presented, indicating the diversity gain that the scheduled MRT scheme can achieve. Furthermore, the interference OP at the primary receiver is discussed due to imperfect CSI in the link from base station to primary receiver link. Finally, extensive performance evaluation results accompanied with equivalent ones obtained by computer simulations are presented to corroborate the proposed analysis.
- Subjects
COGNITIVE radio; CHANNEL estimation; RAYLEIGH fading channels; SIGNAL-to-noise ratio; PROBABILITY theory; 5G networks
- Publication
IET Communications (Wiley-Blackwell), 2018, Vol 12, Issue 15, p1919
- ISSN
1751-8628
- Publication type
Article
- DOI
10.1049/iet-com.2018.5515