Temiz, Murat;
Alsusa, Emad;
Danoon, Laith;
Zhang, Yongwei;
(2021)
On the Impact of Antenna Array Geometry on Indoor Wideband Massive MIMO Networks.
IEEE Transactions on Antennas and Propagation
, 69
(1)
pp. 406-416.
10.1109/TAP.2020.3008662.
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Abstract
Multi-user massive multiple-input-multiple-output (massive MIMO) will play a key role in future wireless communication networks. Since spatial channel diversity is the fundamental merit of this technique, high channel correlation may significantly restrict its abilities. This study investigates the impact of channel correlation on a prototyped massive MIMO network with the objective to identify an antenna array geometry which has reduced mutual coupling and channel correlation. To this end, a highly efficient directional wideband single antenna element was designed for the antenna arrays and the user equipments (UEs). The designed array geometry is tested in an experimental indoor wideband massive MIMO setup. Important system parameters, such as channel correlation, power delay profile, and average received power from the UEs, are studied by analyzing the measured channel data. Furthermore, system-level simulations and network capacity calculations are performed based on the measured channel data to evaluate the performance of the prototyped antenna arrays. A regular array was also fabricated and used for benchmarking comparison. Moreover, a power control algorithm is introduced for the uplink, which was shown to improve the network capacity by up to 3 dB. The results demonstrate that the introduced antenna array outperforms the uniform antenna array in terms of mutual coupling and channel capacity.
| Type: | Article |
|---|---|
| Title: | On the Impact of Antenna Array Geometry on Indoor Wideband Massive MIMO Networks |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TAP.2020.3008662 |
| Publisher version: | https://doi.org/10.1109/TAP.2020.3008662 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Antenna array, channel correlation, CHANNEL ESTIMATION, Engineering, Engineering, Electrical & Electronic, massive multiple-input-multiple-output (massive MIMO), mutual coupling, power control (PC) algorithm, Science & Technology, Technology, Telecommunications |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10166325 |
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