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In this paper, the coexistence interference of 28 GHz-band International Mobile Telecommunications (IMT) and fixed-satellite service systems is analyzed based on actual satellite orbit and coverage information. Specifically, the aggregate interferences of IMT system base stations (BS) to fixed-satellite service networks are studied, considering IMT base station antennas with a large range of elevation...
Based on the geometry-based elliptical and circular scattering models, the auto correlation functions (ACFs) and Doppler power spectrum densities (PSDs) are derived and simulated in vehicle -to-vehicle (V2V) outdoor scenarios where the scatterers are moving in arbitrary directions with random velocities. The velocity distributions are assumed to follow exponential and mixed Gaussian for low- and high-speed...
In this paper, the performance of universal-filtered multi-carrier (UFMC) system is analyzed. Specifically, the UFMC signals are generated with Dolph-Chebyshev, Hamming and Hanning filtering. The characteristics of UFMC signals are also compared with OFDM signal, in both software and hardware-in-the-loop simulations. Experimental results show that UFMC signals have better performance than OFDM signal,...
In this paper, based on experimental channel measurements performed at 60 GHz in a typical indoor environment for both LOS and NLOS scenarios, the interdependencies of different channel parameters are investigated for different antenna configurations. Specifically, the channel characteristic interdependencies are examined by calculating correlation coefficients between number of paths, rms delay spread,...
In this paper, cluster characteristics of UWB channels are analyzed based on experimental channel measurements performed in a hall, meeting room and corridors for both LOS and NLOS scenarios. The UWB indoor channels can be generally classified as single- and multi- cluster channels, since single-exponential decay function and a modified multi-cluster model can be used for characterizing the two cluster...
The 60 GHz radio is being foreseen as a very promising candidate for future gigabit wireless communications due to the intrinsic large amount available bandwidth. This band has been proposed for wireless personal area networks (WPANs) aiming at multi-gigabit and short-trange (<10 m) multimedia applications. The 60 GHz band regulation and standardization efforts are currently underway worldwide.
In this paper, the link budget of the multiband UWB channel is studied based on empirical analysis of path loss and shadow fading by dividing the frequency range into multiple sub- bands with 500 MHz bandwidth. The work is based on ultra- wide band (UWB) propagation measurements performed in two indoor environments of a hall and a corridor in the frequency range of 3-10 GHz. It is found that in the...
In this paper, based on indoor ultra-wide band (UWB) propagation channel measurements for both LOS and NLOS scenarios, the frequency dependency of propagation in the 3-10 GHz UWB range is investigated by examining the power delay profile, rms delay spread, path loss and shadowing as functions of frequency. Moreover, the bandwidth dependency of channel parameters is also investigated for gaining more...
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