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Zhe Zhang, Xin Bian and Mingqi Li
Channel estimation is an important component of orthogonal frequency division multiplexing (OFDM) systems. The existence of virtual subcarriers leads to energy spreading in the time-domain when using Inverse Fast Fourier Transform (IFFT), resulting in po...
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Diya Wang, Yonglin Zhang, Lixin Wu, Yupeng Tai, Haibin Wang, Jun Wang, Fabrice Meriaudeau and Fan Yang
In recent years, the study of deep learning techniques for underwater acoustic channel estimation has gained widespread attention. However, existing neural network channel estimation methods often overfit to training dataset noise levels, leading to dimi...
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Chenglei Lv, Qiushi Sun, Huifang Chen and Lei Xie
Due to the relative motion between transmitters and receivers and the multipath characteristic of wideband underwater acoustic channels, Doppler and channel estimations are of great significance for an underwater acoustic (UWA) communication system. In t...
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Byung Wook Kim, Pankaj Singh and Sung-Yoon Jung
Recently, display-to-camera (D2C) communication, including display field communication (DFC), has gained attention due to advancements in display technology and the widespread availability of cameras in handheld devices. In this study, we proposed an ite...
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Mohsin Murad, Imran A. Tasadduq and Pablo Otero
Multicarrier techniques have made it possible to wirelessly transmit data at higher rates for underwater acoustic (UWA) communication. Several multicarrier techniques have been explored in the past for wireless data transmission. OFDM is known to fight o...
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Ami Munshi,Srija Unnikrishnan
Pág. 13 - 19
In this paper, the optimality of Compressive Sensing based Least Square (LS-CS) and Compressive Sensing based Minimum Mean Square (MMSE-CS) channel estimation algorithms in Multi Input Multi Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM)...
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Yutaro Iwamoto, Naoaki Hashimoto and Yen-Wei Chen
This study proposes real-time haze removal from a single image using normalised pixel-wise dark-channel prior (DCP). DCP assumes that at least one RGB colour channel within most local patches in a haze-free image has a low-intensity value. Since the spat...
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Prateek Saurabh Srivastav, Lan Chen and Arfan Haider Wahla
Channel estimation is a formidable challenge in mmWave Multiple Input Multiple Output (MIMO) systems due to the large number of antennas. Therefore, compressed sensing (CS) techniques are used to exploit channel sparsity at mmWave frequencies to calculat...
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Xingbo Lu, Weiwei Yang, Yueming Cai and Xinrong Guan
Compressed sensing (CS) has great potential in channel estimation for millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems. To solve such a CS-based channel estimation problem, three categories of algorithms, namely convex relax...
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Han Wang, Jianqing Liao, Lingwei Xu and Xianpeng Wang
The conventional channel estimation schemes for filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) systems are mainly based on preamble methods. However, the utilization of preamble for channel estimation decreases the syste...
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Rui Xue, Yang Cao and Tong Wang
Adaptive coded and modulation (ACM) is an effective measure to resist rain attenuation in Ka-band satellite communications. The accuracy of the estimator for signal-to-noise ratio (SNR) is one of the main factors that affect ACM performance. This paper e...
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Mohamed L. Ammari,Francois Gagnon
Pág. 51 - 57
This paper investigates an adaptive M-ary phaseshiftkeying (M-PSK) modulation scheme over Rayleigh flatfading channels. The data rate is adapted according to thechannel state. At the receiver, the fading is estimated using pilot symbols. To cancel the ch...
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Mohamed Lassaad Ammari
Pág. 52 - 58
In this paper, we consider the transmission of turbo coded symbols in the indoor radio environment. The system isaffected by the intersymbol interference (ISI) caused by the multipath time-delay spread of the transmission medium. To reduce the channel ef...
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Zhenyi Wang, Shengyun Wei, Li Zou, Feifan Liao, Weimin Lang and Yuanzhuo Li
The most widely used Wi-Fi wireless communication system, which is based on OFDM, is currently developing quickly. The receiver must, however, accurately estimate the carrier frequency offset between the transmitter and the receiver due to the characteri...
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Xiao Zhou, Chengyou Wang and Ruiguang Tang
This channel estimation method can be utilized to improve the underwater acoustic communication and fifth-generation (5G) wireless communication systems.
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Juan M. Martín-Doñas, Antonio M. Peinado, Iván López-Espejo and Angel Gomez
This paper deals with speech enhancement in dual-microphone smartphones using beamforming along with postfiltering techniques. The performance of these algorithms relies on a good estimation of the acoustic channel and speech and noise statistics. In thi...
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Han Wang, Jianqing Liao, Lingwei Xu and Xianpeng Wang
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Zidane Mohammed,Said Safi,Mohamed Sabri,Ahmed Boumezzough
Pág. 66 - 71
In this paper the problem of the Non MinimumPhase (NMP) channel identification using blind and adaptivealgorithms is theoretically and numerically evaluated in noiseenvironment case for different signal to noise ratio (SNR). Forthis problem, three blind ...
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Ming Fei SIYAU,Tiancheng LI,Jonathan LOO
Pág. 12 - 20
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