상세정보
학술지
The Impact of Opportunistic User Scheduling on Outage Probability of CR-MIMO Systems
- 발행일
- 201403
- 출처
- IEICE Transactions on Communications, v.E97.B no.3, pp.686-690
- ISSN
- 1745-1345
- 출판사
- 일본, 전자정보통신학회 (IEICE)
- 협약과제
- 13PR1200, 모바일 빅뱅시대의 스펙트럼 슈퍼하이웨이 기술개발, 최재익
- 초록
- In this paper, we study the impact of opportunistic user scheduling on the outage probability of cognitive radio (CR) multiple-input multiple-output (MIMO) systems in the high power region where the peak transmit power constraint is higher than the peak interference constraint. The primary contributions of this paper are the derivation of exact closedform expressions of the proposed scheduled CR-MIMO systems for outage probability and asymptotic analysis to quantify the diversity order and signal to noise ratio (SNR) gain. Through exact analytical results, we provide the achievable outage probability of the proposed scheduled systems as a function of SNR. Also, through asymptotic analysis, we show that the scheduled CR-MIMO systems provide some diversity order gain over the non-scheduled CR-MIMO systems which comes from multi-user diversity (MUD). Also, the SNR gain of the proposed scheduled systems is identical to that of the non-scheduled CR-MIMO systems. Copyright © 2014 The Institute of Electronics, Information and Communication Engineers.
- KSP 제안 키워드
- Asymptotic analysis, Diversity Order, High power, Information and communication, Multiuser diversity, Opportunistic user scheduling, Outage probability(OP), Peak interference constraint, Power Constraint, Signal noise ratio(SNR), Signal to noise ratio (SNR) gain