상세정보
학술지
SINR Distribution for MIMO MMSE Receivers in Transmit-Correlated Rayleigh Channels: SER Performance and High-SNR Power Allocation
- 저자
- 김원섭, Namshik Kim, 정현규, Hyuckjae Lee
- 발행일
- 201310
- 출처
- IEEE Transactions on Vehicular Technology, v.62 no.8, pp.4083-4087
- ISSN
- 0018-9545
- 출판사
- IEEE
- 협약과제
- 13ZI1100, 유무선 빅 네트워크 워천기술 개발, 안치득
- 초록
- In this paper, a multiple-input-multiple-output (MIMO) system with a precoder is considered in transmit-correlated Rayleigh channels. We specifically target the MIMO system employing minimum-mean-square-error (MMSE) receivers. Based on the random matrix theory, we first present a direct and generalized formulation for deriving a probability density function (pdf) of the signal-to-interference-plus-noise ratio (SINR). Then, we derive accurate closed-form SINR pdfs for a small number of transmit and receive antennas. Based on the SINR pdfs, tight closed-form approximations of the symbol error rate (SER) are derived. In the high-signal-to-noise-ratio (SNR) regime, we also propose high-SNR power allocation (HPA) by minimizing the modified global SER approximation. At high SNRs, the computationally efficient HPA performing similar to optimal power allocation (PA) shows noticeable performance gain over the equal PA, particularly at the high transmit correlation. Moreover, the performance gain of the proposed HPA increases with the diversity order. © 1967-2012 IEEE.
- KSP 제안 키워드
- Computationally Efficient, Diversity Order, MMSE receivers, Minimum Mean Square Error(MMSE), Optimal power allocation, Performance gain, Random matrix theory(RMT), Rayleigh channels, SER performance, SINR distribution, Signal noise ratio(SNR)