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학술대회 Eigenvalue Analysis and Its Modeling for 2×2 MIMO Channel Capacity based on Indoor Measurements
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김원섭, 이혁재, 박재준, 김명돈, 정현규
International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) 2009, pp.2534-2538
09MR6400, IMT-Advanced 기반 광대역 무선채널 특성연구, 정현규
This paper aims at the eigenvalue analysis and its modeling for 2x2 (i.e., 2 transmit and 2 receive antennas) Multiple Input Multiple Output (MIMO) channel capacity based on Non Line-Of-Sight (NLOS) wideband indoor measurements. Our channel sounding system is the portable Band Exploration and Channel Sounding (pBECS) System, which works at a carrier frequency of 2.58GHz with 20MHz bandwidth. From the measured data, we investigate Transmit Antenna Correlation Coefficient (TxACC), Receive Antenna Correlation Coefficient (RxACC), channel capacity and eigenvalues of HH* where H and (*) are channel frequency response matrix and conjugate transpose. Based on the eigenvalue characteristics, we derive mean and variance of eigenvalues which are a function of the absolute values of TxACC and RxACC, |TxACC| and |RxACC|, and then model the eigenvalues for 2x2 MIMO channel capacity. Monte Carlo simulations are used to generate the eigenvalue realizations according to the model. The results are compared with the measured data and good agreements are found. ©2009 IEEE.
KSP 제안 키워드
Antenna Correlation, Capacity based, Carrier frequency, Channel frequency response, Correlation Coefficient, Eigenvalue Analysis, Frequency response(FreRes), Indoor measurements, Line-Of-Sight(LOS), MHz bandwidth, MIMO channel capacity