Multi-User Correlation and Sum-Rate in Outdoor Measured Massive MIMO Channels

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This paper analyses the impact of inter-user distance
and angular separation on the channel correlation and achievable
sum-rate for a massive multiple-input multiple-output system
in non line of sight conditions. The investigation is based on
outdoor measurements on a channel sounding system capturing
the dynamic channel of two user arrays. The paper analyses
correlation and sum-rate with varying inter-user distance and
angular separation of dominant beams towards the users. A
large span of correlation and sum-rate values are found across
the range of distances and angular separation. The investigation
shows a moderate link between inter-user distance and correlation,
but a strong impact on correlation is found only for low
angular separation of the users. The results of this non line
of sight (NLOS) scenario suggest that a distance based criteria
alone is not sufficient to accurately model shared clusters and
TidsskriftI E E E Antennas and Wireless Propagation Letters
Udgave nummer13
Sider (fra-til)433-437
Antal sider5
StatusUdgivet - mar. 2020