Article
Engineering, Electrical & Electronic
The Khai Nguyen, Ha H Nguyen, J. Eric Salt, Colin Howlett
Summary: This paper presents a novel optimization method for reducing the peak-to-average-power ratio (PAPR) of orthogonal frequency-division multiplexing (OFDM) signals using partial transmit sequences (PTS) with phase quantization. The formulated optimization problem is converted into a series of convex programming problems using a convex relaxation method, and the obtained phase factors are quantized for maximum likelihood (ML) phase estimation at the receiver, eliminating the need for sending side information. Analytical and numerical results show that the proposed PTS design achieves better PAPR reduction compared to existing methods, without any performance degradation in data detection when the number of phase factors is properly chosen.
IEEE TRANSACTIONS ON BROADCASTING
(2023)
Article
Chemistry, Analytical
Lingping Cai, Ruixue Chu, Zhoupeng Ding, Yang Zou, Hongtao Li
Summary: Transmit beamforming (TBF) is important for low-altitude and slow-speed small (LSS) radar due to heavy clutter and rapidly changing interference. This paper proposes a robust TBF method with sidelobe control and high transmit efficiency. A norm upper bound and a spherical uncertainty set are introduced to enhance the robustness. The nonconvex problem is converted into convex subproblems using convex relaxation schemes, and numerical results show the improvement over traditional TBF methods in efficiency and robustness.
Article
Engineering, Electrical & Electronic
Hirofumi Tsuda, Ken Umeno
Summary: The proposed method reduces the peak-to-average power ratio by selecting suitable vectors from random vectors generated from a Gaussian distribution based on the covariance matrix of a relaxed problem, without the need for a selecting procedure.
IEICE TRANSACTIONS ON COMMUNICATIONS
(2021)
Article
Computer Science, Information Systems
Nahla Al Harthi, Zhongfeng Zhang, Daejin Kim, Seungwon Choi
Summary: A novel method combining DFT spreading and PTS methods is proposed to reduce the PAPR of FBMC/OQAM systems with reasonable computational complexity. Numerical results from computer simulations show a noticeable enhancement in PAPR performance without affecting BER performance.
Article
Computer Science, Hardware & Architecture
Vandana Pundir, Anwar Ahmad
Summary: Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier modulation technique with advantages such as high spectral efficiency and minimal interference, but Peak-to-average Power Ratio (PAPR) presents challenges. Various PAPR reduction techniques have been investigated, with a hybrid combination of Partial Transmit Sequence and Selective Mapping showing better performance. This proposed technique combines Goppa coding for further improvement and demonstrates good PAPR reduction and error control capability.
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
(2021)
Article
Chemistry, Analytical
Esam A. A. Hagras, Sameh F. Desouky, Saad Aldosary, Haitham Khaled, Tarek M. Hassan
Summary: This paper proposes a new peak average power and time reduction strategy based on the adaptive genetic algorithm (AGA) to improve the time reduction and PAPR value reduction for SLM OFDM. Simulation results show that the recommended AGA technique reduces PAPR by about 3.87 dB compared to SLM-OFDM, and achieves a significant learning time reduction of roughly 95.56% compared to traditional GA SLM-OFDM. The proposed AGA SLM-OFDM has an enhanced PAPR of around 3.87 dB compared to traditional OFDM, but is roughly 0.12 dB worse than the conventional GA SLM-OFDM.
Article
Computer Science, Information Systems
Arun Kumar, Mahmoud A. Albreem, Mohammed H. Alsharif, Abu Jahid, Peerapong Uthansakul, Jamel Nebhen
Summary: The non-orthogonal multiple access (NOMA) is a strong candidate for the fifth generation (5G) communication system. A novel bacterial foraging optimization algorithm (BFOA) is proposed for partial transmission sequence (PTS) to efficiently optimize the peak-to-average power ratio (PAPR) of NOMA signals. The proposed method achieves a gain of 4.1 dB with low complexity compared to traditional orthogonal frequency division multiplexing (OFDM).
CMC-COMPUTERS MATERIALS & CONTINUA
(2021)
Article
Computer Science, Information Systems
Antti Arvola, Satya Krishna Joshi, Antti Tolli, David Gesbert
Summary: In this paper, the authors revisit the problem of peak-to-average power ratio minimization in MIMO-OFDM systems and propose a new approach. By utilizing the principles of tone reservation, dummy symbols are placed on unused space-frequency resources to jointly minimize the transmit signal PAPR and the self-power consumption of the dummy symbols. Simulation results show that this approach provides better performance compared to the widely used peak power minimization objective in the tone reservation literature.
Article
Computer Science, Information Systems
Qian Wang, Suwen Xu, Xiao Yan, Hsiao-Chun Wu, Yiyan Wu
Summary: This work presents a new modulation scheme using multiwavelets for downlink NOMA systems, which can significantly increase system capacity while suppressing PAPR. Compared to other NOMA schemes, it can achieve lower PAPR with slightly higher computational complexity while maintaining the same system capacity. All three NOMA schemes can achieve identical bit-error-rate under the same signal-to-noise ratio condition.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Multidisciplinary Sciences
S. Sathish Kumar, V. J. Arulkarthick, Arvind Chakrapani, G. Sasikala
Summary: This article proposes a precoder-based partial transmit sequence (P-PTS) method to reduce the peak to average power ratio (PAPR) and out of band radiation in OFDM systems, while maintaining the bit error rate (BER) performance.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Yuanyuan He, Jamie S. Evans
Summary: This paper proposes an adaptive opportunistic spatial modulation scheme (AOSM) that combines a unique opportunistic group-antenna-selection scheme with phase alignment transmit pre-scaling to enhance the transmit-diversity of SM. The paper presents a comprehensive error performance analysis and derives tight upper-bounds for symbol error probability in closed-form. The results show that the proposed AOSM-MISO scheme achieves the desired transmit-diversity and the performance can be further improved by utilizing fewer antennas groups and a larger signal constellation size. Additionally, the paper shows that the PA pre-scaling scheme does not improve the transmit-diversity of SM. Simulation results validate the analytical derivations and demonstrate the effectiveness of the proposed AOSM system.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Telecommunications
Huichao Shang, Ruifeng Chen, Haoxiang Zhang, Guoyu Ma, Ruisi He, Bo Ai, Zhangdui Zhong
Summary: This paper investigates the reliable communication in Internet of Things for railways (IoT-R) under high mobility scenarios and strict energy constraints. The orthogonal time frequency space (OTFS) modulation is proposed to overcome the challenges in high Doppler environments and has lower peak-to-average power ratio (PAPR) compared to orthogonal frequency division multiplexing. The peak windowing technique is used to reduce PAPR of OTFS and the simulation results show its efficiency in IoT-R applications.
CHINA COMMUNICATIONS
(2023)
Proceedings Paper
Computer Science, Information Systems
Esmot Ara Tuli, Jae Min Lee, Dong-Seong Kim
Summary: This paper proposes an improved partial transmit sequence (PTS) scheme to reduce the peak-to-average power ratio (PAPR) of UFMC system. Simulation results show that the proposed scheme outperforms the original PTS in terms of PAPR reduction, PSD performance, and BER.
36TH INTERNATIONAL CONFERENCE ON INFORMATION NETWORKING (ICOIN 2022)
(2022)
Article
Telecommunications
Jayakrishnan Methapettyparambu Purushothama, Yuan Ding, George Goussetis, Gaojian Huang, Yue Xiao
Summary: This article presents new approaches to synthesize physical-layer secured directional modulation transmitters that can improve the overall energy efficiency of the system. By creating orthogonal artificial noise, the transmitted signals have reduced peak to average power ratio and become more friendly to efficient power amplifier modes. This leads to improved energy consumption compared to conventional directional modulation transmitters.
IEEE TRANSACTIONS ON GREEN COMMUNICATIONS AND NETWORKING
(2023)
Article
Engineering, Electrical & Electronic
Pengcheng Gong, Zhuoyu Zhang, Yuntao Wu, Wen-Qin Wang
Summary: This letter discusses the joint design of transmit waveform and receive beamforming for low probability of intercept (LPI) in cluttered environments with multiple-input multiple-output and frequency diverse array radar. The objective is to maximize the output signal-to-interference-plus-noise ratio while controlling the transmit power and satisfying constraints. An alternating optimization algorithm based on the alternating direction method of multipliers is proposed to tackle the non-convex optimization problem. Simulation results validate the effectiveness of the developed method in terms of objective function values and beampatterns.
IEEE SIGNAL PROCESSING LETTERS
(2022)
