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Introduction to MIMO Communications by Jerry R. Hampton

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5   MIMO channel models

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A common assumption in MIMO analyses is that the channel matrix consists of independent identically distributed complex Gaussian gains (i.e., H = Hw). In the real world, however, this is not always the case. In particular, correlation between the received or emitted signals to or from antenna pairs, or the existence of a direct LOS component in the signal at each receive antenna causes HHw. In this chapter, we introduce several analytical models for H that incorporate the effects of antenna correlation and the impact of LOS propagation. These models often appear in the MIMO literature and provide a convenient means ...

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