Abstract
We consider the uplink of non-cooperative multicellular systems deploying multiple antenna elements at the base stations (BS), covering both the cases of conventional and very large number of antennas. Given the inevitable pilot contamination and an arbitrary path-loss for each link, we address the impact of time variation of the channel due to the relative movement between users and BS antennas, which limits system's performance even if the number antennas is increased, as shown. In particular, we propose an optimal linear receiver (OLR) maximizing the received signal-to-interference-plus-noise (SINR). Closed-form lower and upper bounds are derived as well as the deterministic equivalent of the OLR is obtained. Numerical results reveal the outperformance of the proposed OLR against known linear receivers, mostly in environments with high interference and certain user mobility, as well as that massive MIMO is preferable even in time-varying channel conditions.
Original language | English |
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Title of host publication | 2015 IEEE International Conference on Communications, ICC 2015 |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 2239-2244 |
Number of pages | 6 |
Volume | 2015-September |
ISBN (Electronic) | 9781467364324 |
DOIs | |
Publication status | Published - 9 Sept 2015 |
Event | IEEE International Conference on Communications, ICC 2015 - London, United Kingdom Duration: 8 Jun 2015 → 12 Jun 2015 |
Conference
Conference | IEEE International Conference on Communications, ICC 2015 |
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Country/Territory | United Kingdom |
City | London |
Period | 8/06/15 → 12/06/15 |