Results 21 to 30 of about 4,021,406 (264)
Frequency Synchronization in Frequency Domain OFDM-IM based WLAN Systems
Journal of Communications Software and Systems, 2023 The next-generation of wireless local area network systems are being conceptualized with new applications, smart devices and use cases which mandate unprecedented levels of high data rates, spectral efficiency, reliability, low latency and high energy ...
Lalitha H, Navin Kumar
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An RIS-Assisted Integrated Deep Learning Framework for MIMO-OFDM-IM
IEEE AccessMultiple-input multiple-output orthogonal frequency division multiplexing with index modulation (MIMO-OFDM-IM) offers a flexible trade-off between error performance and spectral efficiency.
Md Abdul Aziz +4 more
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Vector Approximate Message Passing Based OFDM-IM Detection for Underwater Acoustic Communications. [PDF]
Entropy (Basel), 2023 Orthogonal frequency division multiplexing with index modulation (OFDM-IM) has great potential for the implementation of high spectral-efficiency underwater acoustic (UWA) communications.
Feng X +4 more
europepmc +2 more sources
Inter‐numerology interference in OFDM‐IM systems [PDF]
IET Communications, 2021 Abstract In 5G and beyond communication systems, distinct numerologies can coexist to serve diverse requirements for users and applications. However, the inter‐numerology interference (INI) is a main challenge that significantly impacts the system performance.
Seda Dogan Tusha +5 more
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IEEE Wireless Communications Letters, 2018 Orthogonal frequency division multiplexing (OFDM) with index modulation (IM) is a multicarrier transmission technique for frequency-selective fading channels. Although it is energy and spectral efficient, its performance may not be satisfactory as some active subcarriers can be suppressed by fading. In this letter, we consider trellis coded modulation (
Jinho Choi 0001, Youngwook Ko
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Precoding for Spread OFDM IM [PDF]
2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018 Orthogonal frequency division multiplexing index modulation (OFDM-IM) has been emerging as a promising solution to increase the reliability at low complexity. However, the transmit diversity of the OFDM-IM schemes has been limited to two, due to unbalanced transmit diversity between index bits and complex data bits.
Thien Van Luong +2 more
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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
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Index Modulation OFDM Systems with Direct Pattern of Subcarrier Activation
NTU Journal of Engineering and Technology, 2023 OFDM-IM is a spatial modulation technique applied to OFDM's block subcarriers, resulting in a modified version of OFDM. Compared to traditional OFDM, OFDM-IM boasts several benefits, such as enhanced bit-error rate (BER) performance and power efficiency.
Zainab Mohammed Abdulkareem +1 more
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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 +5 more
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Deep Learning-Based Detector for OFDM-IM [PDF]
IEEE Wireless Communications Letters, 2019 This letter presents the first attempt of exploiting deep learning (DL) in the signal detection of orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. Particularly, we propose a novel DL-based detector termed as DeepIM, which employs a deep neural network with fully connected layers to recover data bits in an OFDM-IM ...
Thien Van Luong +4 more
openaire +5 more sources