Results 11 to 20 of about 708 (167)

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   +8 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   +5 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   +5 more sources

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   +2 more sources

Deep Learning-Based Detector With Modulation Parameter-Independent Structure for OFDM With Index Modulation

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   +2 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

OFDM transmission scheme with subcarrier supply index modulation [PDF]

Tongxin xuebao, 2023
To address the drawback that subcarrier activation pattern (SAP) of the orthogonal frequency division multiplexing with index modulation (OFDM-IM) cannot match the binary numbers which affects the system performance, the orthogonal frequency division ...
Yi GUO, Yiqing WANG, Yuanyuan FAN, Gang LIU   +3 more
doaj   +4 more sources

OFDM with Index Modulation for Asynchronous mMTC Networks

Sensors, 2018
One of the critical missions for next-generation wireless communication systems is to fulfill the high demand for massive Machine-Type Communications (mMTC). In mMTC systems, a sporadic transmission is performed between machine users and base station (BS)
Seda Doğan, Armed Tusha, Hüseyin Arslan   +2 more
doaj   +3 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

Null Subcarrier Index Modulation in OFDM Systems for 6G and Beyond. [PDF]

Sensors (Basel), 2021
Eren T, Akan A.
europepmc   +2 more sources