Indoor Multipath Characterization for MIMO Wireless Communications

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The achievable linear increase in multiple-input multipleoutput (MIMO) capacity is conditioned on sufficiently rich multipath" presenting in a wireless channel. Thus, the characterization of the resolvable multipaths in an indoor environment dictates the obtainable MIMO capacity at a certain SNR level. In this paper, the statistic relationship between the characteristics of multipaths and the performance of MIMO systems in indoor environments is explored using channel measurements. Our investigations demonstrate the terminology of richness, which is generally used to characterize the multipath propagation, highly relates to the number of effective multipaths, their carried power and their angular features. A novel dimensionless parameter, angular spread factor, is proposed in this work."
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