Abstract-The channel capacity of a multiple-input-multipleoutput (MIMO) communication system depends substantially on correlation between individual receive branches. In this letter, we investigate the MIMO capacity using the correlation matrix approach and the Salz-Winters spatial correlation model. It is shown that for a linear array, correlation has no impact on the MIMO channel capacity provided that the two-element array beamwidth is smaller than the angle spread of the incoming signals. Simple but accurate approximations for the correlation coefficient and the corresponding channel capacity are derived for different angular spreads.

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Adaptive antennas are now regarded by many within the wireless communications industry as a core system component in futuregeneration mobile networks. In order to promote

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