Results 11 to 20 of about 1,422 (172)

Hamming Distance Optimized Underwater Acoustic OTFS-IM Systems [PDF]

Entropy, 2023
The orthogonal time frequency space (OTFS) modulation technique can provide reliable communication in time-varying channels. Due to the dispersive characteristics of underwater acoustic channels, this paper proposes an OTFS-IM underwater acoustic ...
Xiaopeng Guo, Biao Wang, Yunan Zhu, Zide Fang, Zhaoyue Han   +4 more
doaj   +2 more sources

A Structured Sparse Bayesian Channel Estimation Approach for Orthogonal Time—Frequency Space Modulation [PDF]

Entropy, 2023
Orthogonal time–frequency space (OTFS) modulation has been advocated as a promising waveform for achieving integrated sensing and communication (ISAC) due to its superiority in high-mobility adaptability and spectral efficiency.
Mi Zhang, Xiaochen Xia, Kui Xu, Xiaoqin Yang, Wei Xie, Yunkun Li, Yang Liu   +6 more
doaj   +2 more sources

Integrated Sensing and Communication Target Detection Framework and Waveform Design Method Based on Information Theory [PDF]

Sensors
Target detection is a core function of integrated sensing and communication (ISAC) systems. The traditional likelihood ratio test (LRT) target detection algorithm performs inadequately under low signal-to-noise ratio (SNR) conditions, and the performance
Qilong Miao, Xiaofeng Shen, Chenfei Xie, Yong Gao, Lu Chen   +4 more
doaj   +2 more sources

Multi-Pilot Channel Estimation for Orthogonal Time–Frequency Space Systems Based on Constant-Amplitude Zero-Autocorrelation Sequences [PDF]

Sensors
Future communication systems must support high-speed mobile scenarios, while the mainstream Orthogonal Frequency Division Multiplexing (OFDM) technology faces severe inter-carrier interference in such environments.
Renjie Ju, Yangyanhao Guo, Xiaojuan Hou, Jian He, Ting Li, Zhiqiang Lan, Xiujian Chou   +6 more
doaj   +2 more sources

Integrated Sensing and Communication Using Random Padded OTFS with Reduced Interferences [PDF]

Sensors
The orthogonal time frequency space (OTFS) is a modulation designed to transmit data in high Doppler channels where the usage of the orthogonal frequency division multiplexing (OFDM) is challenging. The random padded OTFS (RP-OTFS) modulation, introduced
Pavel Karpovich, Tomasz P. Zielinski
doaj   +2 more sources

Pilot‐Based Iterative Path Estimation and Maximum Ratio Combining (MRC)–Based Signal Detection of Orthogonal Time–Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels

Journal of Computer Networks and Communications
The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time–frequency space (OTFS) modulation has emerged as a promising technique to ...
Ephrem Gelamite Demere, Zelalem Hailu Gebeyehu   +1 more
openaire   +2 more sources

Performance Evaluation of OTFS and OFDM for 6G Waveform [PDF]

ITM Web of Conferences, 2022
Orthogonal time frequency space (OTFS) modulation is a coming technique addressing the challenges of 5G and 6G. It’s appeared to bring about outstanding error performance in delay – Doppler (DeDo) channels.
Mohammadi Abderrahim, Chakkor Saad, El Oualkadi Ahmed, Moussaoui Mohamed, Dkiouak Aziz, Baghouri Mostafa   +5 more
doaj   +1 more source

Orthogonal Time Frequency Space (OTFS) Modulation for Wireless Communications

CoRR, 2022
Orthogonal time frequency space (OTFS) modulation is a recently proposed multi-carrier transmission scheme, which innovatively multiplexes the information symbols in the delay-Doppler (DD) domain instead of the conventional time-frequency (TF) domain. The DD domain symbol multiplexing gives rise to a direct interaction between the DD domain information
openaire   +4 more sources

Analysis of PAPR in OTFS Modulation with Classical Selected Mapping Technique [PDF]

, 2023
Orthogonal Time Frequency Space (OTFS) is the advanced stage of modulation for this fast-growing generation. This is the waveform proposed to be used in next-generation communication systems i.e., 6G, as it has the advantage of high data rate, better ...
Boddu, Subbarao, Bulusu, Krishna Chaitanya, Chandhar, Prabhu, Chennamsetty, Sneha   +3 more
core   +1 more source

Orthogonal Time-Frequency Multiplexing With 2D Hermitian Symmetry for Optical-Wireless Communications

IEEE Photonics Journal, 2020
Orthogonal time-frequency-space (OTFS) modulation is a promising two-dimensional (2D) signal technique to tackle high mobility time-varying wireless channels.
Jie Zhong, Ji Zhou, Weiping Liu, Jiayin Qin   +3 more
doaj   +1 more source