상세정보
학술지
Performance Analysis of Scheduled Cognitive Radio Systems with MIMO Transmission
- 발행일
- 201310
- 출처
- IEEE Transactions on Vehicular Technology, v.62 no.8, pp.4088-4093
- ISSN
- 0018-9545
- 출판사
- IEEE
- 협약과제
- 13PR1200, 모바일 빅뱅시대의 스펙트럼 슈퍼하이웨이 기술개발, 최재익
- 초록
- In this paper, we investigate the performance analysis of cognitive radio (CR) multiple-input-multiple-output (MIMO) systems, including the scheduled transmit antenna selection (TAS) with maximal ratio combining (MRC) and the scheduled space-time block coding (STBC). Here, the scheduled MIMO systems transmit data of a user to provide the maximum instantaneous postprocessing signal-to-noise ratio (SNR) at the CR receiver. For the closed-form performance analysis, we derive approximated probability density functions (pdfs) of the instantaneous postprocessing SNR at the receiver for the scheduled TAS with MRC and the scheduled STBC systems, respectively. Based on the results, we derive the approximated closed-form expressions of the average postprocessing SNR and ergodic capacity for the scheduled CR systems with MIMO transmission. Through the analysis, we provide the achievable average postprocessing SNR and ergodic capacity of the proposed scheduled systems as a function of the peak interference power constraint. In addition, we present the impact of imperfect channel state information (CSI) on the ergodic capacity for the scheduled TAS with MRC and the scheduled STBC systems through arbitrary order statistics, respectively. © 1967-2012 IEEE.
- KSP 제안 키워드
- Arbitrary order, Channel State Information(CSI), Closed-form expressions, Cognitive Radio System, Ergodic capacity, Interference Power Constraint, MIMO transmission, Maximal-ratio-combining(MRC), Performance analysis, Probability Density Function, Signal noise ratio(SNR)