Robert T. Schwarz

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—MIMO satellite links have recently attracted a high interest with respect to possible link capacity enhancements. In [1] it has been shown that especially in Line-of-Sight (LOS) satellite channels maximum multiplexing gain can be achieved via the construction of orthogonal channels by means of the geometrical arrangement of the ground terminal antennae in(More)
—The impact of atmospheric impairments on the bandwidth efficiency of Multiple-Input Multiple-Output (MIMO) geostationary satellite links is investigated theoretically. In particular we analyze the impairments caused by precipitation because especially rain and wet snow are the most severe atmospheric impact factors degrading the channel capacity. We focus(More)
In this paper, we investigate the benefits of uniform circular arrays (UCAs) as an alternative antenna deployment to uniform linear arrays (ULA), which are commonly applied for multiple-input multiple-output (MIMO) systems. We consider a MIMO satellite link with focus on the Line-of-Sight (LOS) signal component of the MIMO channel between two geostationary(More)
— The channel capacity of indoor Line-Of-Sight MIMO channels is affected by the geometrical antenna setup. In theory there exist rules for the design of LOS channels with optimum channel eigenvalue profile providing maximum capacity. These prescripts are only valid in the absence of multipath signals. By measurements we investigate the relevance of such(More)