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A telecommunication system uses carriers in order to transmit information through a cable or wirelessly. If each time only one carrier is transmitted, then the system s signal will not be immune to frequency selective fading. If frequency…

信号处理 · 电气工程与系统科学 2018-07-10 Spyridon K. Chronopoulos , Vasilis Christofilakis , Giorgos Tatsis , Panos Kostarakis

Spatial complementary code keying modulation (SCCKM) is proposed as a novel block coding modulation scheme. An input binary sequence is modulated based on the different lengths of complementary code keying (CCK) modulation and then spread…

信息论 · 计算机科学 2017-09-19 A. H. Jafari , T. O'Farrell

Two signal multiplexing schemes for optical fiber communication are considered: Wavelength-division multiplexing (WDM) and nonlinear frequency-division multiplexing (NFDM), based on the nonlinear Fourier transform (NFT). Achievable…

信息论 · 计算机科学 2018-04-24 Mansoor I. Yousefi , Xianhe Yangzhang

The Terahertz band holds a promise to enable both super-accurate sensing and ultra-fast communication. However, challenges arise that severe Doppler effects call for a waveform with high Doppler robustness while severe propagation path loss…

信号处理 · 电气工程与系统科学 2025-02-26 Meilin Li , Chong Han , Shi Jin

In this paper, we propose an orthogonal frequency division multiplexing (OFDM)-based generalized optical quadrature spatial modulation (GOQSM) technique for multiple-input multiple-output optical wireless communication (MIMO-OWC) systems.…

信号处理 · 电气工程与系统科学 2021-12-02 Chen Chen , Lin Zeng , Xin Zhong , Shu Fu , Min Liu , Pengfei Du

Polynomial-cancellation-coded orthogonal frequency division multiplexing (PCC-OFDM) is a form of OFDM that has waveforms which are very well localized in both the time and frequency domains and so it is ideally suited for use in the 5G…

信号处理 · 电气工程与系统科学 2018-10-12 Gayathri Kongara , Lei Yang , Cuiwei He , Jean Armstrong

Side-effect modulation (SEM) has the potential to be a significant source of interference in future visible light communication (VLC) systems. SEM is a variation in the intensity of the light emitted by a luminaire and is usually a…

信号处理 · 电气工程与系统科学 2018-10-30 Mohammed M. A. Mohammed , Cuiwei He , Jean Armstrong

Orthogonal Frequency Division Multiplexing (OFDM) is an efficient method of data transmission for high speed communication systems. However, the main drawback of OFDM system is the high Peak to Average Power Ratio (PAPR) of the transmitted…

网络与互联网体系结构 · 计算机科学 2012-05-11 Suverna Sengar , Partha Pratim Bhattacharya

In this paper, we present throughput analysis and optimization of bandwidth efficient selective retransmission method at modulation layer for conventional Chase Combining (CC) method under orthogonal frequency division multiplexing (OFDM)…

信息论 · 计算机科学 2015-03-20 Taniya Shafique , Muhammad Zia , Huy Dung Han

Deep learning-based joint source-channel coding (JSCC) is emerging as a potential technology to meet the demand for effective data transmission, particularly for image transmission. Nevertheless, most existing advancements only consider…

信号处理 · 电气工程与系统科学 2024-06-18 Pujing Yang , Guangyi Zhang , Yunlong Cai

This paper considers the problem of spectrum sensing in cognitive radio networks when the primary user employs Orthogonal Frequency Division Multiplexing (OFDM). We develop cooperative sequential detection algorithms based on energy…

信息论 · 计算机科学 2010-05-11 ArunKumar Jayaprakasam , Vinod Sharma , Chandra R. Murthy , Prashant Narayanan

This research proposes a novel approach utilizing Orbital Angular Momentum (OAM) beams to enhance Radar Cross Section (RCS) diversity for target detection in future transportation systems. Unlike conventional OAM beams with hollow-shaped…

信号处理 · 电气工程与系统科学 2024-12-30 Yufei Zhao , Yong Liang Guan , Dong Chen , Afkar Mohamed Ismail , Xiaoyan Ma , Xiaobei Liu , Chau Yuen

This paper investigates a reconfigurable intelligent surface (RIS)-aided wideband massive multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system with low-resolution analog-to-digital converters…

This paper investigates the joint number of subcarriers and power optimization in Multi user Orthogonal Frequency Division Multiplexing based Differential Chaotic Shift Keying systems with noise reduction. We first find a closed-form…

系统与控制 · 电气工程与系统科学 2021-05-10 Majid Mobini , Mohammad Reza Zahabi

A modulation classification (MC) scheme based on Independent Component Analysis (ICA) in conjunction with either maximum likelihood (ML) or Support Vector Machines (SVM) is proposed for MIMO-OFDM signals over frequency selective, time…

信息论 · 计算机科学 2013-07-18 Yu Liu , Alexander M. Haimovich , Wei Su , Jason Dabin , Emmanuel Kanterakis

Orthogonal Frequency Division Multiplexing (OFDM)-based waveforms are used for communication links in many current and emerging Internet of Things (IoT) applications, including the latest WiFi standards. For such OFDM-based transceivers,…

The recently proposed affine frequency division multiplexing (AFDM) is a new transmission waveform that has shown excellent performance in high-mobility environments, making it a sensible option for the next-generation wireless networks. In…

信息论 · 计算机科学 2025-07-15 Mi Qian , Fei Ji , Yao Ge , Miaowen Wen , Yong Liang Guan

The dominating waveform in 5G is orthogonal frequency division multiplexing (OFDM). OFDM will remain a promising waveform candidate for joint communication and sensing (JCAS) in 6G since OFDM can provide excellent data transmission…

信息论 · 计算机科学 2023-01-10 Yi Geng

Signal clipping is a classic technique for reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. It has been widely applied in consumer electronic devices owing to its low complexity and…

信号处理 · 电气工程与系统科学 2024-02-20 Yuyang Du , Liang Hao , Yiming Lei , Qun Yang , Shiqi Xu

In this contribution, a direct comparison of the Offset-QAM-OFDM (OQAM-OFDM) and the Cyclic Prefix OFDM (CP-OFDM) scheme is given for an 802.11a based system. Therefore, the chosen algorithms and choices of design are described and…

信息论 · 计算机科学 2016-05-06 Martin Fuhrwerk , Christoph Thein , Lars Häring