Multiuser Scheduling for Cognitive MIMO with Channel Estimation Errors and Feedback Delay

Jing Yang, Trung Q. Duong, Maged Elkashlan, Xianfu Lei, Xiqi Gao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A multiuser scheduling multiple-input multiple-output (MIMO) cognitive radio network (CRN) with space-time block coding (STBC) is considered in this paper, where one secondary base station (BS) communicates with one secondary user (SU) selected from K candidates. The joint impact of imperfect channel state information (CSI) in BS → SUs and BS → PU due to channel estimation errors and feedback delay on the outage performance is firstly investigated. We obtain the exact outage probability expressions for the considered network under the peak interference power IP at PU and maximum transmit power Pm at BS which cover perfect/imperfect CSI scenarios in BS → SUs and BS → PU. In addition, asymptotic expressions of outage probability in high SNR region are also derived from which we obtain several important insights into the system design. For example, only with perfect CSIs in BS → SUs, i.e., without channel estimation errors and feedback delay, the multiuser diversity can be exploited. Finally, simulation results confirm the correctness of our analysis.
Original languageEnglish
Title of host publication2015 IEEE International Conference on Communications (ICC)
Place of PublicationLondon, UK
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages7737 - 7742
DOIs
Publication statusPublished - Jun 2015
EventIEEE International Conference on Communications (ICC 2015) - London, United Kingdom
Duration: 08 Jun 201512 Jun 2015

Conference

ConferenceIEEE International Conference on Communications (ICC 2015)
CountryUnited Kingdom
CityLondon
Period08/06/201512/06/2015

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  • Cite this

    Yang, J., Duong, T. Q., Elkashlan, M., Lei, X., & Gao, X. (2015). Multiuser Scheduling for Cognitive MIMO with Channel Estimation Errors and Feedback Delay. In 2015 IEEE International Conference on Communications (ICC) (pp. 7737 - 7742). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICC.2015.7249564