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This paper concerns the uplink of multicell multiuser multiple-input multiple-output (MIMO) systems. To tackle the effect of pilot contamination that is generally viewed as a bottleneck in previous work, this paper presents a superimposed pilot (SP)-aided uplink channel estimation scheme and mathematically characterizes the impact that an SP has on the performance of such a very large MIMO system...
This paper concerns with the uplink transmission of a massive MIMO system under high mobility environments. By modeling the fading channel as complex exponential basis expansion model, this paper presents a superimposed training (ST)-aided channel estimation scheme, and mathematically characterizes the impact that ST has on the performance of such a very large MIMO system when the number of antennas...
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