Details
| Original language | English |
|---|---|
| Title of host publication | 2020 Wireless Telecommunications Symposium |
| Subtitle of host publication | Washington, DC, USA, April 22-24, 2020 |
| ISBN (electronic) | 9781728146959 |
| Publication status | Published - 2020 |
| Event | 19th Annual Wireless Telecommunications Symposium, WTS 2020 - Virtual, Washington, United States Duration: 22 Apr 2020 → 24 Apr 2020 |
Publication series
| Name | Wireless Telecommunications Symposium |
|---|---|
| Volume | 2020-April |
| ISSN (Print) | 1934-5070 |
Abstract
Communication systems based in Orthogonal Frequency Division Multiplexing (OFDM) technology are very popular due to their robustness against inter-symbol interference (ISI) and their efficient use of the spectrum. Nevertheless, one of the major drawbacks of OFDM is its high peak-to-average power ratio (PAPR), which is part of its multicarrier nature. A high PAPR could drive the high-power amplifier (HPA) in its nonlinear region, preventing thus the receiver from recovering the conveyed information correctly. To avoid this, a PAPR reduction algorithm is essential for such systems. Therefore, in this paper we introduce the modified active constellation extension (mACE) algorithm. The mACE capability to reduce the PAPR is demonstrated through simulation and compared with the state-of-the-art smart gradient-project (SGP) method. It is shown that mACE outperforms the SGP method. For instance, in systems with QPSK modulation, mACE reduces up to 0.5 dB more PAPR than SGP, and up to 0.2 dB in systems with 16-QAM. These results are achieved with less computational complexity. Hence, mACE achieves an appropriate trade-off between PAPR reduction and system resources, which makes it a viable option in real time OFDM systems.
Keywords
- active constellation extension (ACE), modified ACE (mACE), OFDM, PAPR
ASJC Scopus subject areas
- Computer Science(all)
- Computer Networks and Communications
- Computer Science(all)
- Signal Processing
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2020 Wireless Telecommunications Symposium : Washington, DC, USA, April 22-24, 2020. 2020. 9198714 (Wireless Telecommunications Symposium; Vol. 2020-April).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Modified Active Constellation Extension Algorithm for PAPR Reduction in OFDM Systems
AU - Samayoa, Y.
AU - Ostermann, J.
PY - 2020
Y1 - 2020
N2 - Communication systems based in Orthogonal Frequency Division Multiplexing (OFDM) technology are very popular due to their robustness against inter-symbol interference (ISI) and their efficient use of the spectrum. Nevertheless, one of the major drawbacks of OFDM is its high peak-to-average power ratio (PAPR), which is part of its multicarrier nature. A high PAPR could drive the high-power amplifier (HPA) in its nonlinear region, preventing thus the receiver from recovering the conveyed information correctly. To avoid this, a PAPR reduction algorithm is essential for such systems. Therefore, in this paper we introduce the modified active constellation extension (mACE) algorithm. The mACE capability to reduce the PAPR is demonstrated through simulation and compared with the state-of-the-art smart gradient-project (SGP) method. It is shown that mACE outperforms the SGP method. For instance, in systems with QPSK modulation, mACE reduces up to 0.5 dB more PAPR than SGP, and up to 0.2 dB in systems with 16-QAM. These results are achieved with less computational complexity. Hence, mACE achieves an appropriate trade-off between PAPR reduction and system resources, which makes it a viable option in real time OFDM systems.
AB - Communication systems based in Orthogonal Frequency Division Multiplexing (OFDM) technology are very popular due to their robustness against inter-symbol interference (ISI) and their efficient use of the spectrum. Nevertheless, one of the major drawbacks of OFDM is its high peak-to-average power ratio (PAPR), which is part of its multicarrier nature. A high PAPR could drive the high-power amplifier (HPA) in its nonlinear region, preventing thus the receiver from recovering the conveyed information correctly. To avoid this, a PAPR reduction algorithm is essential for such systems. Therefore, in this paper we introduce the modified active constellation extension (mACE) algorithm. The mACE capability to reduce the PAPR is demonstrated through simulation and compared with the state-of-the-art smart gradient-project (SGP) method. It is shown that mACE outperforms the SGP method. For instance, in systems with QPSK modulation, mACE reduces up to 0.5 dB more PAPR than SGP, and up to 0.2 dB in systems with 16-QAM. These results are achieved with less computational complexity. Hence, mACE achieves an appropriate trade-off between PAPR reduction and system resources, which makes it a viable option in real time OFDM systems.
KW - active constellation extension (ACE)
KW - modified ACE (mACE)
KW - OFDM
KW - PAPR
UR - http://www.scopus.com/inward/record.url?scp=85092736061&partnerID=8YFLogxK
U2 - 10.1109/WTS48268.2020.9198714
DO - 10.1109/WTS48268.2020.9198714
M3 - Conference contribution
AN - SCOPUS:85092736061
SN - 978-1-7281-4696-6
T3 - Wireless Telecommunications Symposium
BT - 2020 Wireless Telecommunications Symposium
T2 - 19th Annual Wireless Telecommunications Symposium, WTS 2020
Y2 - 22 April 2020 through 24 April 2020
ER -