Results 181 to 190 of about 4,021,406 (264)

Spectral efficient and high data rate ring topology based UWOC system with carrier-free optical add-drop nodes. [PDF]

PLoS One
Armghan A, Chaoui S, Alsharari M, Aliqab K, Ghafoor S, Ijaz M, Mirza J.   +6 more
europepmc   +1 more source

A Deep Learning-Based Emergency Alert Wake-Up Signal Detection Method for the UHD Broadcasting System. [PDF]

Sensors (Basel)
Song JH, Baek MS, Bae B, Song HK.
europepmc   +1 more source

RETRACTED: Signal processing for enhancing railway communication by integrating deep learning and adaptive equalization techniques.

PLoS One
Wang Y, Chang W, Li J, Yang C.
europepmc   +1 more source

A Convolutional-Transformer Residual Network for Channel Estimation in Intelligent Reflective Surface Aided MIMO Systems. [PDF]

Sensors (Basel)
Wu Q, Bao J, Xu H, Ng BK, Lam CT, Im SK.
europepmc   +1 more source

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Optimized Greedy Detection for OFDM-IM Systems

IEEE Communications Letters, 2023
Recently, a new transmission method has been proposed for power-efficient wireless communication systems called Orthogonal Frequency Division Multiplexing with Index Modulation (OFDM-IM).
Mokhtar Besseghier, Samir Ghouali, Ahmed Bouzidi Djebbar   +2 more
openaire   +2 more sources

OFDM-IM with Supply Index

2021 IEEE/CIC International Conference on Communications in China (ICCC), 2021
In this paper, a novel orthogonal frequency division multiplexing with index modulation (OFDM-IM) scheme is proposed. In this scheme, the index pattern is composed of the original index pattern and the supply index pattern. This scheme increases the index information transmitted by multiplexing index patterns and makes the system suitable for low ...
Guo Yi, Yuanyuan Fan, Gang Liu
openaire   +1 more source

Constellation Rotation Assisted Uplink NOMA With OFDM-IM

IEEE Transactions on Vehicular Technology
In this paper, an uplink non-orthogonal multiple access (NOMA) with orthogonal frequency division multiplexing-index modulation (OFDM-IM) is proposed by exploiting the constellation rotation to enhance the spectral efficiency (SE) while achieving an ...
Md. Shahriar Kamal, Muhammad Sajid Sarwar, Hye Yeong Lee, Soo Young Shin   +3 more
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Optimal OFDM-IM Signals With Constant PAPR

IEEE Transactions on Broadcasting
Orthogonal frequency division multiplexing indexed modulation (OFDM-IM), an emerging multi-carrier modulation technique, offers significant advantages over traditional OFDM. The OFDM-IM scheme exhibits superior performance in terms of bit error rate (BER)
Jiabo Hu, Yajun Wang 0002, Zhuxian Lian, Yinjie Su, Zhibin Xie   +4 more
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Generalized OFDM-IM With Noncoherent Detection

IEEE Transactions on Wireless Communications, 2020
This paper generalizes the conventional noncoherent OFDM-IM systems by allowing selection of different numbers of active subcarriers for message representation. We then present the maximum-likelihood (ML) detection rule for frequency-selective block fading channels.
Ali Fazeli, Ha H. Nguyen 0001, Muhammad Hanif 0002   +2 more
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Distributed cooperative OFDM-IM system

China Communications, 2020
This paper considered a multi-relay distributed cooperative system in which not only the source communicates with the destination, but also the relays have communication requests with the destination. In order to achieve the requirements of simultaneous communication for the source and relays, we propose a distributed cooperative system based on ...
Hua Qing, Hua Yu, Yun Liu, Wei Duan, Miaowen Wen, Fei Ji   +5 more
openaire   +1 more source