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학술대회 Modeling of Eigenvalues for MIMO Channel Capacity Based on Outdoor Measurements
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김원섭, 이혁재, 박재준, 김명돈, 정현규
Vehicular Technology Conference (VTC) 2009 (Spring), pp.1-5
09MR6400, IMT-Advanced 기반 광대역 무선채널 특성연구, 정현규
This paper aims at modeling of eigenvalues for 2×N (i.e., 2 transmit and N receive antennas) channel capacity based on non line-of-sight (NLOS) wideband outdoor measurements. Our channel sounding system is the Band Exploration and Channel Sounding System (BECS) 2005, which works at a carrier frequency of 3.7 GHz with 100 MHz 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 eigenvalue characteristics, we derive mean and variance of eigenvalue which are a function of the absolute value of TxACC, |TxACC|, the absolute value of RxACC, |RxACC|, and the number of Rx antennas, and then model eigenvalues for 2×N channel capacity. Monte Carlo simulations are used to generate eigenvalue realizations according to the model. The results are compared with the measure data and good agreements are found. © 2009 IEEE.
KSP 제안 키워드
100 MHz, Absolute value, Antenna Correlation, Capacity based, Carrier frequency, Channel frequency response, Correlation Coefficient, Frequency response(FreRes), Line-Of-Sight(LOS), MHz bandwidth, MIMO channel capacity