Qin, Y;
Liao, X;
Li, A;
Masouros, C;
(2022)
Low-Complexity PAPR Minimization for Symbol Level Precoded Multi-User MISO-OFDM System.
IEEE Communications Letters
, 26
(2)
pp. 409-413.
10.1109/LCOMM.2021.3132986.
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PAPR Minimization via Constructive Interference Precoding For Multi-User MISO-OFDM System.pdf - Submitted Version Download (613kB) | Preview |
Abstract
This paper proposes a method exploiting constructive interference (CI) to reduce the transmit signal’s peak-to-average power ratio (PAPR), while keeping the total transmission power as low as possible. An optimization problem that jointly performs power minimization and PAPR reduction is formulated, which is however difficult to solve directly due to the non-convex PAPR constraint. To obtain a feasible solution in low complexity, by using the vectorization method and introducing a regularization factor, we relax the PAPR constraint. The original optimization problem is transformed into a convex problem that can be solved with an improved fast iterative shrinkage-thresholding algorithm (FISTA). Numerical results are presented to show 1dB savings in terms of transmission power and 52% savings in terms of PAPR compared with state-of-the-art PAPR minimization techniques.
Type: | Article |
---|---|
Title: | Low-Complexity PAPR Minimization for Symbol Level Precoded Multi-User MISO-OFDM System |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1109/LCOMM.2021.3132986 |
Publisher version: | https://doi.org/10.1109/LCOMM.2021.3132986 |
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: | MISO-OFDM, PAPR, symbol-level precoding, constructive interference (CI) |
UCL classification: | 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 UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
URI: | https://discovery.ucl.ac.uk/id/eprint/10146144 |
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