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- W1506555983 abstract "We investigate a spectrum-sharing system with non-severely faded mutual interference links, where both the secondary-to-primary and primary-to-secondary channels have a Line-of-Sight (LoS) component. Based on a Rician model for the LoS channels, we show, analytically and numerically, that LoS interference hinders the achievable secondary user capacity. This is caused by the poor dynamic range of the interference channels fluctuations when a dominant LoS component exists. In order to improve the capacity of such system, we propose the usage of an Electronically Steerable Parasitic Array Radiator (ESPAR) antenna at the secondary terminals. By viewing the orthonormal patterns of an ESPAR antenna as multiple virtual dumb antennas, we randomly vary their weights over time creating artificial channel fluctuations that can perfectly eliminate the undesired impact of LoS interference. Because the proposed scheme uses a single RF chain, it is well suited for compact and low cost mobile terminals." @default.
- W1506555983 created "2016-06-24" @default.
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- W1506555983 date "2015-02-01" @default.
- W1506555983 modified "2023-09-26" @default.
- W1506555983 title "Opportunistic spectrum sharing using dumb basis patterns: The Line-of-Sight interference scenario" @default.
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- W1506555983 doi "https://doi.org/10.1109/iccnc.2015.7069385" @default.
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