Salem, A;
Masouros, C;
(2019)
On the Finite Constellation Sum Rates for ZF and CI Precoding.
In:
Proceedings of the 2019 IEEE Wireless Communications and Networking Conference (WCNC).
IEEE
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Abstract
This paper analyzes the performance of multi-user multiple-input multiple-output (MU-MIMO) systems, with a finite phase-shift keying (PSK) input alphabet. The achievable sum rate is investigated for two precoding techniques, namely: 1) zero forcing (ZF) precoding, 2) constructive interference (CI) precoding. In light of this, new analytical expressions for the average sum rate are derived in the two scenarios, and Monte Carlo simulations are provided throughout to confirm the analysis. Furthermore, based on the derived expressions, a power allocation scheme that can ensure fairness among the users is also investigated. The results in this paper demonstrate that, the CI strictly outperforms the ZF scheme, and the performance gap between the considered schemes depends essentially on the system parameters.
| Type: | Proceedings paper |
|---|---|
| Title: | On the Finite Constellation Sum Rates for ZF and CI Precoding |
| Event: | 2019 IEEE Wireless Communications and Networking Conference (WCNC) |
| ISBN-13: | 978-1-5386-7646-2 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/WCNC.2019.8885637 |
| Publisher version: | https://doi.org/10.1109/WCNC.2019.8885637 |
| 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: | MIMO communication, Monte Carlo methods, phase shift keying, precoding, wireless channels |
| 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/10089218 |
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