Results 1 to 10 of about 213 (119)

Secure Index and Data Symbol Modulation for OFDM-IM [PDF]

IEEE Access, 2017
In this paper, we propose a secure index and data symbol modulation scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems.
Yonggu Lee, Hanseong Jo, Youngwook Ko, Jinho Choi   +3 more
doaj   +6 more sources

Polar-Coded OFDM With Index Modulation

IEEE Access, 2021
In this paper, we apply polar codes to a modified version of OFDM systems with index modulation which is called OFDM with in-phase/quadrature index modulation (OFDM-I/Q-IM).
Si-Yu Zhang, Behnam Shahrrava
doaj   +3 more sources

OFDM With Hybrid Number and Index Modulation

IEEE Access, 2020
A novel transmission scheme is introduced for efficient data transmission by conveying additional information bits through jointly changing the index and number of active subcarriers within each orthogonal frequency division multiplexing (OFDM) subblock.
Ahmad M. Jaradat, Jehad M. Hamamreh, Huseyin Arslan   +2 more
doaj   +3 more sources

Traffic and Scenario Adaptive OFDM-IM for Vehicular Networks: A Fuzzy Logic Based Optimization Approach [PDF]

Sensors
Orthogonal Frequency Division Multiplexing with Index Modulation (OFDM-IM) holds significant importance in vehicle-to-everything (V2X) communications, with its main advantages being outstanding spectral efficiency and strong interference resistance ...
Xingliang Ren, Yaqi Wei, Lina Zhu, Mohammed Nabil El Korso   +3 more
doaj   +2 more sources

Coherent Optical OFDM With Index Modulation for Long-Haul Transmission in Optical Communication Systems

IEEE Access, 2022
In this paper, it is proposed to enhance coherent optical orthogonal frequency-division multiplexing (OFDM) system by using index modulation in terms of bit error rate (BER) and spectral efficiency for different levels of the fiber nonlinearity.
Ahmet Guner
doaj   +1 more source

Orthogonal Subblock Division Multiple Access for OFDM-IM-Based Multi-User VLC Systems

Photonics, 2022
In this paper, we propose and experimentally demonstrate an orthogonal subblock division multiple access (OSDMA) scheme for orthogonal frequency division multiplexing with index modulation (OFDM-IM)-based multi-user visible light communication (MU-VLC ...
Yungui Nie, Jiamin Chen, Wanli Wen, Min Liu, Xiong Deng, Chen Chen   +5 more
doaj   +1 more source

Enhanced Optical-OFDM With Index and Dual-Mode Modulation for Optical Wireless Systems

IEEE Access, 2020
In this article, we introduce intensity modulation and direct detection compatible enhanced optical-orthogonal frequency division multiplexing with index modulation (EO-OFDM-IM) schemes.
Ali Waqar Azim, Yannis Le Guennec, Marwa Chafii, Laurent Ros   +3 more
doaj   +1 more source

Vector OFDM With Index Modulation

IEEE Access, 2017
The concept of index modulation (IM) has gained increased attention in recent years. As a member of the IM family, orthogonal frequency division multiplexing with index modulation (OFDM-IM), which is able to convey additional information bits using the ...
Yun Liu, Fei Ji, Miaowen Wen, Dehuan Wan, Beixiong Zheng   +4 more
doaj   +1 more source

OFDM With Differential Index Modulation for Visible Light Communication

IEEE Photonics Journal, 2020
In this paper, orthogonal frequency division multiplexing with differential index modulation (OFDM-DIM) is proposed for visible light communication. Compared with traditional OFDM with index modulation (OFDM-IM), the proposed scheme decreases the average
Di Zheng, Hongming Zhang, Jian Song
doaj   +1 more source

Space-Time Multiple-Mode Orthogonal Frequency Division Multiplexing With Index Modulation

IEEE Access, 2017
Multiple-mode orthogonal frequency division multiplexing with index modulation (MM-OFDM-IM) improves the spectral efficiency of the conventional OFDM-IM scheme by considering multiple distinguishable constellations for signal modulation.
Jun Li, Miaowen Wen, Xueqin Jiang, Wei Duan   +3 more
doaj   +1 more source