Article
Computer Science, Information Systems
Ting Liu, Xiaoming Wang, Yuanxue Xin, Xi Yang
Summary: This paper studies the precoding-based PAPR reduction methods for the massive MIMO-OFDM system in the angular domain. The EM-GAMP algorithm and the proposed OADMM scheme are adopted to explore the system characteristics in terms of SER performance, PAPR reduction efficiency, and IUI. The numerical simulation results verify the efficiency of the proposed technique in terms of SER, PAPR suppression, and IUI.
Article
Engineering, Electrical & Electronic
Lei Hua, Yajun Wang, Zhuxian Lian, Yinjie Su, Zhibin Xie
Summary: This paper addresses the reduction of peak to average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM)-based massive multi-user (MU) multiple-input multiple-output (MIMO) downlink systems. By utilizing the redundancy provided by a large number of base station antennas, the non-convex optimization problem of OFDM modulation, MU precoding, and PAPR reduction is formulated. The linearized alternating direction method of multipliers (LADMM) is used to directly solve this problem without relaxation. Experimental results show that LADMM achieves comparable PAPR reduction, faster convergence, and lower complexity compared to existing methods based on relaxations.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Hayder Alkatrani, Muhammad Ilyas, Salam Alyassri, Ali Nahar, Fadi Al-Turjman, Jawad Rasheed, Ali Alshahrani, Basil Al-Kasasbeh
Summary: A new method called polygon number algorithm (PN) combined with conventional partial transmit sequence (C-PTS) was proposed to address the high-PAPR issue in OFDM systems. By processing data and leveraging number nonsimilarity, the PAPR can be reduced by up to 8 dB. This method is efficient, does not require additional transmission of side information (SI), and improves data transmission efficiency.
WIRELESS COMMUNICATIONS & MOBILE COMPUTING
(2021)
Article
Computer Science, Information Systems
Aleksei Kalinov, Roman Bychkov, Andrey Ivanov, Alexander Osinsky, Dmitry Yarotsky
Summary: This study proposes a machine learning approach to reduce the PAPR in the downlink channel of digital Massive MIMO system, solving the issue of manual tuning of hyperparameters.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Computer Science, Information Systems
Lei Hua, Yajun Wang, Zhuxian Lian, Yinjie Su, Zhibin Xie
Summary: This paper addresses the issue of reducing the PAPR in OFDM-based massive MIMO downlink systems. By utilizing the massive degrees-of-freedom in large-scale MIMO antenna arrays, the PAPR-aware precoding is formulated as a convex optimization problem. The accelerated proximal gradient algorithm is then developed to solve the optimization problem. Numerical results demonstrate that the proposed algorithm outperforms existing methods in terms of PAPR reduction, SER, and computational complexity.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2022)
Article
Optics
K. Tamilarasi, C. K. Shinzeer, Anupong Wongchai, R. Azhagumurugan, Mannava Yesubabu, Bharat Singh, Mahendran Arumugam
Summary: The high spectral efficiency of OFDM is favored for broadband communication systems, but it has drawbacks such as high PAPR, ISI, and ICI. These issues are addressed by using an amplifier with large dynamic range and partitioning OFDM symbols into sub-blocks that are independently rotated in phase. This reduces the PAPR of the resulting OFDM signal in wireless communication.
Article
Computer Science, Information Systems
The Khai Nguyen, Ha H. Nguyen, Hoang D. Tuan, Hien Quoc Ngo
Summary: This letter proposes improved pilot designs to enhance the connectivity of multicarrier massive MIMO systems, effectively reducing pilot overhead and improving spectral efficiency.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2022)
Article
Optics
Wenxuan Mo, Ji Zhou, Gengchen Liu, Yuanda Huang, Liangchuan LI, Han Cui, Haide Wang, Qingxin Lu, Weiping Liu, Changyuan Yu
Summary: In this paper, a flexible-rate PON based on entropy-loaded clipping DMT is proposed to increase capacity. Clipping operation and simplified LDPC-assisted CNC algorithm are used to improve the performance of DMT in peak-power constrained PON. The results show that the simplified CNC algorithm improves optical receiver sensitivity by approximately 1.8dB at the 20% soft-decision forward-error-correction limit. The proposed flexible-rate PON can achieve data-rate adjustment from 12.5Gb/s to 100Gb/s under an optical power budget of 40dB to 26dB.
Article
Optics
Shuaidong Chen, Jianxin Ren, Bo Liu, Yaya Mao, Xiangyu Wu, Rahat Ullah, Xiumin Song, Yu Bai, Jianye Zhao, Yibin Wan, Yiming Ma, Wenchao Xia, Feng Wang
Summary: In this paper, a performance improvement of non-orthogonal multiple access (NOMA) for the passive optical network (PON) is proposed. By using a three-dimensional (3D) constellation and a two-dimensional Inverse Fast Fourier Transform IFFT modulator (2D-IFFT), the proposed 3D-NOMA can increase the minimum Euclidean distance (MED) of constellation points by 15.48% and reduce the peak-to-average power ratio (PAPR) of NOMA by 2 dB. Experimental results demonstrate a 12.17 Gb/s 3D-NOMA transmission over 25 km single-mode fiber (SMF). The proposed 3D-NOMA scheme shows improved sensitivity gain and performance compared to traditional 2D-NOMA.
Article
Engineering, Electrical & Electronic
Rafik Zayani, Daniel Roviras
Summary: In this paper, a PAPR-aware downlink transmission scheme is proposed for OFDM-based massive MU-MIMO systems, which successfully reduces the signal's PAPR and hardware impairments by using linear precoding and peak-canceling signals, ensuring accurate transmission of data and PCS. This method offers PAPR reduction similar to conventional precoders while reducing computational complexity.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2021)
Proceedings Paper
Computer Science, Artificial Intelligence
Vijaya Kumar Padarti, Mukesh Ghantasala, Sivaram Naik Jarapala, Krishna Sai Nunna, Tarun Teja Suramsetty
Summary: This paper proposes a new hybrid model algorithm to address the issue of high peak to average power ratio (PAPR) in Multiuser Multiple Input and Multiple Output Orthogonal Frequency Division Multiplexing (MU-MIMO-OFDM) systems. By using variational Expectation-Maximization (EM) algorithm and combined Generalised Approximate Message Passing (GAMP) method, the algorithm achieves significant performance improvement in PAPR reduction and computational complexity.
2022 SECOND INTERNATIONAL CONFERENCE ON ADVANCES IN ELECTRICAL, COMPUTING, COMMUNICATION AND SUSTAINABLE TECHNOLOGIES (ICAECT)
(2022)
Article
Computer Science, Information Systems
Mohammad Mahmudul Hasan, Michael Cheffena, Slobodan Petrovic
Summary: A multilevel chaotic encryption (MCE) system is proposed in this work to enhance physical-layer security in Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed system improves transmission performance by reducing the high Peak-to-Average-Power Ratio (PAPR) and achieves multilevel encryption. The research results show that the proposed encryption scheme outperforms existing schemes in terms of security, computational complexity, and PAPR.
Article
Engineering, Electrical & Electronic
Heba M. Abdel-Atty, Saly S. Hassaneen, Heba Y. Soliman
Summary: This study presents an efficient implementation of the PTS design using the VHDL language and roundabout circular shifting on an FPGA. The proposed structured framework effectively reduces the PAPR and demonstrates superiority in terms of hardware complexity reduction.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Linfeng Song, Ding Shi, Lu Gan, Xiqi Gao
Summary: This article investigates signal detection for high frequency skywave massive MIMO-OFDM systems, proposing separate and joint Slepian transform-based detectors to reduce complexity and improve performance.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Zhijie Li, Ningde Jin, Xin Wang, Jidong Wei
Summary: An extreme learning machine-based tone reservation scheme is proposed to reduce the PAPR of OFDM system, achieving comparable performance with low complexity compared to other Neural Network-based algorithms. The algorithm shows advantages of fast learning capability and short training length in simulation results.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)