Results 11 to 20 of about 68,492,323 (167)
Direct and external intensity modulation in OFDM RoF links [PDF]
, 2014 This article is available Open Access to view at: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7158985Radio-over-fiber (RoF) systems comprise light modulation and transmission of millimeter-wave signals over fiber links.
Cosmas, John P. +22 more
core +1 more source
Coherent and Non-Coherent Multilayer Index Modulation
IEEE Access, 2019 Index modulation assisted OFDM (OFDM-IM) has become a popular technique in wireless communications. In this paper, we proposes a novel multilayer framework for OFDM-IM.
Sarath Gopi +2 more
doaj +1 more source
Secure Index with OFDM-IM-based Chaotic System
Iraqi Journal of Information & Communication Technology, 2023 Orthogonal Frequency Division Multiplexing-Index Modulation (OFDM-IM) based on chaos is a com- munication technique that uses chaotic systems to enhance the security of OFDM-IM systems.
Sura H. Hussien, Hamsa A. Abdullah
doaj +1 more source
Hybrid Iterative Multiuser Detection for Channel Coded Space Division Multiple Access OFDM Systems [PDF]
, 2006 Space division multiple access (SDMA) aided orthogonal frequency division multiplexing (OFDM) systems assisted by efficient multiuser detection (MUD) techniques have recently attracted intensive research interests.
Jiang, M., Ng, S. X., Hanzo, L.
core +2 more sources
Practical Implementation of Index Modulation-Based Waveforms
IEEE Access, 2017 Orthogonal frequency division multiplexing (OFDM) with index modulation (OFDM-IM) technique has been recently proposed to provide performance improvements over conventional OFDM.
Selahattin Gokceli +3 more
doaj +1 more source
Orthogonal Frequency Division Multiplexing With Joint Subblocks Index Modulation
IEEE Access, 2019 Recently, orthogonal frequency division multiplexing (OFDM) with index modulation has emerged as promising technologies with the improvement of spectral efficiency and energy efficiency, which carries additional index bits through the index domain.
Yuxin Shi +4 more
doaj +1 more source
IEEE Access, 2023 Every existing deep learning (DL)-based detector for orthogonal frequency division multiplexing with index modulation (OFDM-IM) is optimized for one instance for modulation parameters (MPs) such as the modulation orders and the number of active ...
Junghyun Kim, Hosung Park
doaj +1 more source
Statistical Distribution of EVM Measurements for Direct-Modulation Radio-Over-Fiber Links Transporting OFDM Signals [PDF]
, 2013 The effect of distortion on the error vector magnitude (EVM) performance of orthogonal frequency-division multiplexing (OFDM) signals with different numbers of subcarriers and the connection to the peak-to-average power ratio (PAPR) of such signals is ...
Nkansah, Anthony +3 more
core +1 more source
IEEE Open Journal of Vehicular Technology, 2021 In this paper, we propose two new multiple-access schemes for downlink transmission based on the combination of orthogonal frequency division multiplexing (OFDM) with index modulation (IM), namely OFDM-IM.
Said El-Khamy +2 more
doaj +1 more source
Information Guided Precoding for OFDM
IEEE Access, 2017 In conventional orthogonal frequency division multiplexing with index modulation (OFDM-IM), the M-ary modulated symbols are transmitted on a subset of subcarriers under the guidance of information bits. In this paper, a novel information guided precoding
Qiang Li +3 more
doaj +1 more source