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학술지 Performance Analysis of Spatially Correlated MIMO-OFDM Beamforming Systems with the Maximum Eigenvalue Model from Measured MIMO Channels
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저자
김원섭, 이경남, 김명돈, 박재준, 정현규, 이혁재
발행일
201210
출처
IEEE Transactions on Wireless Communications, v.11 no.10, pp.3744-3753
ISSN
1536-1276
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TWC.2012.083012.120164
협약과제
12VI1700, 차세대 이동통신 서비스를 위한 다양한 셀구축 환경에 적용이 가능한 초소형 RF 단위모듈 기반 다중대역(Multi-Band) 다중모드(Multi-RAT) 기지국용 RU(Radio Unit)개발, 이광천
초록
The performance of MIMO-OFDM beamforming systems with maximal ratio combining receivers is considered based on the extensive wideband 2 × 8 (i.e., 2 transmitting and 8 receiving antennas) MIMO channel measurement data in non line-of-sight urban macrocell environments. Using the experimental observation that the probability density function (PDF) of the measured maximum eigenvalue for H m H m, where H m and superscript ^ denote a MIMO channel frequency response matrix and conjugation and transposition, respectively, matches the Gamma distribution well, we propose the maximum eigenvalue model as Gamma distributed random variables whose parameters are both transmitting and receiving correlations and the number of receiving antennas. Using the model, the performances of MIMO-OFDM beamforming systems, such as the PDF of the output signal-to-noise ratio, outage probability, symbol error rate, and achievable diversity order, are analyzed to demonstrate the effect of spatial correlation in the realistic 2 × n (downlink) and n × 2 (uplink) MIMO channels. © 2002-2012 IEEE.
키워드
Error analysis, Gamma distributions, measurement, multiple-input multiple-output (MIMO), orthogonal frequency division multiplexing (OFDM)
KSP 제안 키워드
Channel frequency response, Diversity Order, Error analysis, Frequency response(FreRes), Gamma distribution, Line-Of-Sight(LOS), MIMO channel measurements, Maximal-ratio-combining(MRC), Multiple input multiple output(MIMO), Multiple input multiple output orthogonal frequency division multiplexing(MIMO-OFDM), Non Line-of-sight(NLOS)