Opportunistic user scheduling in MIMO cognitive radio networks
Refereed conference paper presented and published in conference proceedings


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AbstractThis paper studies multiuser diversity of uplink MIMO cognitive radio network and proposes a two-stage opportunistic user scheduling scheme. In the first stage, a cognitive beamforming design is proposed to ensure the interference caused by secondary signals is canceled or minimized on the spatial dimensions occupied by primary MIMO system. Then, some secondary users that cause minimal interference leakage at primary system are pre-selected as candidate users. In the second stage, some candidate users that produce maximum sum secondary rate are further selected for uplink scheduling. The proposed scheme enables the secondary link to take advantage of multiuser diversity while ensuring that the interference on primary link is within a certain threshold. Analytical results show that the sum rate of secondary uplink scales as Ns log logK for K secondary users and Ns antennas on secondary receiver for very large K. © 2014 IEEE.
All Author(s) ListYang L., Zhang W., Zheng N., Ching P.C.
Name of Conference2014 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2014
Start Date of Conference04/05/2014
End Date of Conference09/05/2014
Place of ConferenceFlorence
Country/Region of ConferenceItaly
Detailed descriptionorganized by IEEE Signal Processing Society,
Year2014
Month1
Day1
Pages7303 - 7307
ISBN9781479928927
ISSN1520-6149
LanguagesEnglish-United Kingdom
Keywordscognitive radio network, multiuser diversity, Opportunistic user scheduling

Last updated on 2020-25-11 at 00:48