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This paper describes the first available 5G testbeds as designed by 5G CHAMPION, a collaborative research project undertaken by over twenty consortium members and targeting the provision of 5G services at the 2018 Winter Olympics in Korea. In order to provide 5G services such as augmented reality (AR), virtual reality (VR), high quality, interactive multi-player video games, the testbeds shall fulfill...
Statistical characterization of the indoor hotspot radio channel is very important for the future MIMO system design. In this paper, we present multipath channel parameters acquiring from wideband MIMO channel measurement at 3.7GHz, frequency hand. The channel measurement campaign has been performed in the Incheon international airport, where is a representative indoor hotspot region in Korea. The...
For the mobile radio channel parameter estimation, the Space-Alternating Generalized Expectation-maximization (SAGE) algorithm is a popular scheme to estimate the individual path parameters, i.e., the relative delay, incidence azimuth, Doppler frequency, and complex amplitude of impinging waves. Because of the constraint of bandwidth of channel sounding signal and the limitation of the number of antennas,...
Distributed antenna systems (DAS) has been adopted in both indoor and outdoor wireless communications for benefits of reducing the power consumption and enhancing system capacity owing to spatial multiplexing gains. The capacity of a DAS system is partially determined by the cross-correlation of the large-scale fading of multiple links in the system. In this contribution, we use experimental data...
Spatial auto- and cross-correlation characteristics of propagation channels are investigated for four indoor scenarios using measurement data. In addition to the well-known spatial auto-correlation effect, significant cross-correlation between channels is also observed. We found that non-zero spatial cross-correlation among channels may occur in three scenarios with possibly different mechanisms....
In this contribution, we derive the spread function and power spectrum of the so-called "relay channel'' along which electromagnetic waves propagate from a source station to a destination station via multiple amplify-and-forward (AF) relay stations. These results show analytically that the propagation over such a relay channel can be influenced by the propagation in individual "hops'' and...
Based on the experimental results obtained from the extensive wideband MIMO channel measurements at 2.38, 3.705 and 5.25 GHz in Line-Of-Sight (LOS) rural macro environments, the empirical Path Loss (PL) model is proposed for the IMT-Advanced systems. PL exponent, intercept, frequency dependent factor and standard deviation of Shadow Fading (SF) are obtained by using the Least Square (LS) method. It...
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