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학술지 Distribution of Eigenvalues for 2×2 MIMO Channel Capacity based on Indoor Measurements
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저자
김원섭, 이혁재, 김명돈, 정현규
발행일
201204
출처
IEEE Transactions on Wireless Communications, v.11 no.4, pp.1255-1259
ISSN
1536-1276
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TWC.2012.020712.102181
협약과제
11PI1300, IMT-Advanced 기반 광대역 무선채널 특성연구, 정현규
초록
Based on the non line-of-sight (NLOS) indoor measurements performed in the corridors on the third floor of the Electronics and Telecommunications Research Institute (ETRI) building in Daejeon city, Republic of Korea, we investigated the distribution of the eigenvalues of HH*, where H denotes a 2×2 multiple-input multiple-output (MIMO) channel matrix. Using the observation that the distribution of the measured eigenvalues matches well with the Gamma distribution, we propose a model of eigenvalues as Gamma distributed random variables that prominently feature both transmitting and receiving correlations. Using the model with positive integer k i, i=1, 2, which is the shape parameter of a Gamma distribution, we derive the closed-form ergodic capacity of the 2×2 MIMO channel. Validation results show that the proposed model enables the evaluation of the outage and ergodic capacities of the correlated 2×2 MIMO channel in the NLOS indoor corridor environment. © 2012 IEEE.
키워드
Correlation, Gamma distributions, measurement, MIMO systems
KSP 제안 키워드
Capacity based, Ergodic capacity, Gamma distribution, Indoor measurements, Line-Of-Sight(LOS), MIMO channel capacity, MIMO system, Non Line-of-sight(NLOS), Proposed model, Random variable, Republic of Korea